Thread: copy and postgresql.conf
hi,
i load data from files using copy method.
Files contain between 2 and 7 millions of rows, spread on 5 tables.
For loading all the data, it takes 40mn, and the same processing takes 17mn with Oracle.
I think that this time can be improved by changing postgresql configuration file.
But which parameters i need to manipulate and with which values ?
Here are the specifications of my system :
V250 architecture sun4u
2xCPU UltraSparc IIIi 1.28 GHz.
8 Go RAM.
Regards.
Will
This e-mail is intended only for the above addressee. It may contain
privileged information. If you are not the addressee you must not copy,
distribute, disclose or use any of the information in it. If you have
received it in error please delete it and immediately notify the sender.
Security Notice: all e-mail, sent to or from this address, may be
accessed by someone other than the recipient, for system management and
security reasons. This access is controlled under Regulation of
Investigatory Powers Act 2000, Lawful Business Practises.
Hi William,
which PostgreSQL version are you using? Newer (8.0+) versions have some
important performance improvements for the COPY command.
Also, you'll notice significant improvements by creating primary & foreign
keys after the copy command. I think config tweaking can improve key and
index creation but I don't think you can improve the COPY command itself.
There are also many threads in this list commenting on this issue, you'll
find it easely in the archives.
A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure:
> hi,
>
> i load data from files using copy method.
> Files contain between 2 and 7 millions of rows, spread on 5 tables.
>
> For loading all the data, it takes 40mn, and the same processing takes 17mn
> with Oracle. I think that this time can be improved by changing postgresql
> configuration file. But which parameters i need to manipulate and with
> which values ?
>
> Here are the specifications of my system :
> V250 architecture sun4u
> 2xCPU UltraSparc IIIi 1.28 GHz.
> 8 Go RAM.
>
> Regards.
>
> Will
>
>
> This e-mail is intended only for the above addressee. It may contain
> privileged information. If you are not the addressee you must not copy,
> distribute, disclose or use any of the information in it. If you have
> received it in error please delete it and immediately notify the sender.
> Security Notice: all e-mail, sent to or from this address, may be
> accessed by someone other than the recipient, for system management and
> security reasons. This access is controlled under Regulation of
> Investigatory Powers Act 2000, Lawful Business Practises.
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Have you searched our list archives?
>
> http://archives.postgresql.org
--
Albert Cervera Areny
Dept. Informàtica Sedifa, S.L.
Av. Can Bordoll, 149
08202 - Sabadell (Barcelona)
Tel. 93 715 51 11
Fax. 93 715 51 12
====================================================================
........................ AVISO LEGAL ............................
La presente comunicación y sus anexos tiene como destinatario la
persona a la que va dirigida, por lo que si usted lo recibe
por error debe notificarlo al remitente y eliminarlo de su
sistema, no pudiendo utilizarlo, total o parcialmente, para
ningún fin. Su contenido puede tener información confidencial o
protegida legalmente y únicamente expresa la opinión del
remitente. El uso del correo electrónico vía Internet no
permite asegurar ni la confidencialidad de los mensajes
ni su correcta recepción. En el caso de que el
destinatario no consintiera la utilización del correo electrónico,
deberá ponerlo en nuestro conocimiento inmediatamente.
====================================================================
........................... DISCLAIMER .............................
This message and its attachments are intended exclusively for the
named addressee. If you receive this message in error, please
immediately delete it from your system and notify the sender. You
may not use this message or any part of it for any purpose.
The message may contain information that is confidential or
protected by law, and any opinions expressed are those of the
individual sender. Internet e-mail guarantees neither the
confidentiality nor the proper receipt of the message sent.
If the addressee of this message does not consent to the use
of internet e-mail, please inform us inmmediately.
====================================================================
thanks,
i'm using postgresql 8.0.3
there is no primary key and no index on my tables
regards
-----Message d'origine-----
De : pgsql-performance-owner@postgresql.org
[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert
Cervera Areny
Envoyé : mardi 14 février 2006 12:38
À : pgsql-performance@postgresql.org
Objet : Re: [PERFORM] copy and postgresql.conf
Hi William,
which PostgreSQL version are you using? Newer (8.0+) versions have some
important performance improvements for the COPY command.
Also, you'll notice significant improvements by creating primary & foreign
keys after the copy command. I think config tweaking can improve key and
index creation but I don't think you can improve the COPY command itself.
There are also many threads in this list commenting on this issue, you'll
find it easely in the archives.
A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure:
> hi,
>
> i load data from files using copy method.
> Files contain between 2 and 7 millions of rows, spread on 5 tables.
>
> For loading all the data, it takes 40mn, and the same processing takes 17mn
> with Oracle. I think that this time can be improved by changing postgresql
> configuration file. But which parameters i need to manipulate and with
> which values ?
>
> Here are the specifications of my system :
> V250 architecture sun4u
> 2xCPU UltraSparc IIIi 1.28 GHz.
> 8 Go RAM.
>
> Regards.
>
> Will
>
>
> This e-mail is intended only for the above addressee. It may contain
> privileged information. If you are not the addressee you must not copy,
> distribute, disclose or use any of the information in it. If you have
> received it in error please delete it and immediately notify the sender.
> Security Notice: all e-mail, sent to or from this address, may be
> accessed by someone other than the recipient, for system management and
> security reasons. This access is controlled under Regulation of
> Investigatory Powers Act 2000, Lawful Business Practises.
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Have you searched our list archives?
>
> http://archives.postgresql.org
--
Albert Cervera Areny
Dept. Informàtica Sedifa, S.L.
Av. Can Bordoll, 149
08202 - Sabadell (Barcelona)
Tel. 93 715 51 11
Fax. 93 715 51 12
====================================================================
........................ AVISO LEGAL ............................
La presente comunicación y sus anexos tiene como destinatario la
persona a la que va dirigida, por lo que si usted lo recibe
por error debe notificarlo al remitente y eliminarlo de su
sistema, no pudiendo utilizarlo, total o parcialmente, para
ningún fin. Su contenido puede tener información confidencial o
protegida legalmente y únicamente expresa la opinión del
remitente. El uso del correo electrónico vía Internet no
permite asegurar ni la confidencialidad de los mensajes
ni su correcta recepción. En el caso de que el
destinatario no consintiera la utilización del correo electrónico,
deberá ponerlo en nuestro conocimiento inmediatamente.
====================================================================
........................... DISCLAIMER .............................
This message and its attachments are intended exclusively for the
named addressee. If you receive this message in error, please
immediately delete it from your system and notify the sender. You
may not use this message or any part of it for any purpose.
The message may contain information that is confidential or
protected by law, and any opinions expressed are those of the
individual sender. Internet e-mail guarantees neither the
confidentiality nor the proper receipt of the message sent.
If the addressee of this message does not consent to the use
of internet e-mail, please inform us inmmediately.
====================================================================
---------------------------(end of broadcast)---------------------------
TIP 5: don't forget to increase your free space map settings
This mail has originated outside your organization,
either from an external partner or the Global Internet.
Keep this in mind if you answer this message.
This e-mail is intended only for the above addressee. It may contain
privileged information. If you are not the addressee you must not copy,
distribute, disclose or use any of the information in it. If you have
received it in error please delete it and immediately notify the sender.
Security Notice: all e-mail, sent to or from this address, may be
accessed by someone other than the recipient, for system management and
security reasons. This access is controlled under Regulation of
Investigatory Powers Act 2000, Lawful Business Practises.
Sorry, COPY improvements came with 8.1 (http://www.postgresql.org/docs/whatsnew) A Dimarts 14 Febrer 2006 14:26, FERREIRA, William (VALTECH) va escriure: > thanks, > > i'm using postgresql 8.0.3 > there is no primary key and no index on my tables > > regards > > -----Message d'origine----- > De : pgsql-performance-owner@postgresql.org > [mailto:pgsql-performance-owner@postgresql.org]De la part de Albert > Cervera Areny > Envoyé : mardi 14 février 2006 12:38 > À : pgsql-performance@postgresql.org > Objet : Re: [PERFORM] copy and postgresql.conf > > > > Hi William, > which PostgreSQL version are you using? Newer (8.0+) versions have some > > important performance improvements for the COPY command. > > Also, you'll notice significant improvements by creating primary & foreign > > keys after the copy command. I think config tweaking can improve key and > > index creation but I don't think you can improve the COPY command itself. > > There are also many threads in this list commenting on this issue, you'll > > find it easely in the archives. > > A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure: > > hi, > > > > i load data from files using copy method. > > Files contain between 2 and 7 millions of rows, spread on 5 tables. > > > > For loading all the data, it takes 40mn, and the same processing takes > > 17mn with Oracle. I think that this time can be improved by changing > > postgresql configuration file. But which parameters i need to manipulate > > and with which values ? > > > > Here are the specifications of my system : > > V250 architecture sun4u > > 2xCPU UltraSparc IIIi 1.28 GHz. > > 8 Go RAM. > > > > Regards. > > > > Will > > > > > > This e-mail is intended only for the above addressee. It may contain > > privileged information. If you are not the addressee you must not copy, > > distribute, disclose or use any of the information in it. If you have > > received it in error please delete it and immediately notify the sender. > > Security Notice: all e-mail, sent to or from this address, may be > > accessed by someone other than the recipient, for system management and > > security reasons. This access is controlled under Regulation of > > Investigatory Powers Act 2000, Lawful Business Practises. > > > > ---------------------------(end of broadcast)--------------------------- > > TIP 4: Have you searched our list archives? > > > > http://archives.postgresql.org > > -- > > Albert Cervera Areny > Dept. Informàtica Sedifa, S.L. > > Av. Can Bordoll, 149 > 08202 - Sabadell (Barcelona) > Tel. 93 715 51 11 > Fax. 93 715 51 12 > > ==================================================================== > ........................ AVISO LEGAL ............................ > La presente comunicación y sus anexos tiene como destinatario la > persona a la que va dirigida, por lo que si usted lo recibe > por error debe notificarlo al remitente y eliminarlo de su > sistema, no pudiendo utilizarlo, total o parcialmente, para > ningún fin. Su contenido puede tener información confidencial o > protegida legalmente y únicamente expresa la opinión del > remitente. El uso del correo electrónico vía Internet no > permite asegurar ni la confidencialidad de los mensajes > ni su correcta recepción. En el caso de que el > destinatario no consintiera la utilización del correo electrónico, > deberá ponerlo en nuestro conocimiento inmediatamente. > ==================================================================== > ........................... DISCLAIMER ............................. > This message and its attachments are intended exclusively for the > named addressee. If you receive this message in error, please > immediately delete it from your system and notify the sender. You > may not use this message or any part of it for any purpose. > The message may contain information that is confidential or > protected by law, and any opinions expressed are those of the > individual sender. Internet e-mail guarantees neither the > confidentiality nor the proper receipt of the message sent. > If the addressee of this message does not consent to the use > of internet e-mail, please inform us inmmediately. > ==================================================================== > > > > > > ---------------------------(end of broadcast)--------------------------- > TIP 5: don't forget to increase your free space map settings > > > > This mail has originated outside your organization, > either from an external partner or the Global Internet. > Keep this in mind if you answer this message. > > > This e-mail is intended only for the above addressee. It may contain > privileged information. If you are not the addressee you must not copy, > distribute, disclose or use any of the information in it. If you have > received it in error please delete it and immediately notify the sender. > Security Notice: all e-mail, sent to or from this address, may be > accessed by someone other than the recipient, for system management and > security reasons. This access is controlled under Regulation of > Investigatory Powers Act 2000, Lawful Business Practises. -- Albert Cervera Areny Dept. Informàtica Sedifa, S.L. Av. Can Bordoll, 149 08202 - Sabadell (Barcelona) Tel. 93 715 51 11 Fax. 93 715 51 12 ==================================================================== ........................ AVISO LEGAL ............................ La presente comunicación y sus anexos tiene como destinatario la persona a la que va dirigida, por lo que si usted lo recibe por error debe notificarlo al remitente y eliminarlo de su sistema, no pudiendo utilizarlo, total o parcialmente, para ningún fin. Su contenido puede tener información confidencial o protegida legalmente y únicamente expresa la opinión del remitente. El uso del correo electrónico vía Internet no permite asegurar ni la confidencialidad de los mensajes ni su correcta recepción. En el caso de que el destinatario no consintiera la utilización del correo electrónico, deberá ponerlo en nuestro conocimiento inmediatamente. ==================================================================== ........................... DISCLAIMER ............................. This message and its attachments are intended exclusively for the named addressee. If you receive this message in error, please immediately delete it from your system and notify the sender. You may not use this message or any part of it for any purpose. The message may contain information that is confidential or protected by law, and any opinions expressed are those of the individual sender. Internet e-mail guarantees neither the confidentiality nor the proper receipt of the message sent. If the addressee of this message does not consent to the use of internet e-mail, please inform us inmmediately. ====================================================================
30% faster !!! i will test this new version ... thanks a lot -----Message d'origine----- De : pgsql-performance-owner@postgresql.org [mailto:pgsql-performance-owner@postgresql.org]De la part de Albert Cervera Areny Envoyé : mardi 14 février 2006 17:07 À : pgsql-performance@postgresql.org Objet : Re: [PERFORM] copy and postgresql.conf Sorry, COPY improvements came with 8.1 (http://www.postgresql.org/docs/whatsnew) A Dimarts 14 Febrer 2006 14:26, FERREIRA, William (VALTECH) va escriure: > thanks, > > i'm using postgresql 8.0.3 > there is no primary key and no index on my tables > > regards > > -----Message d'origine----- > De : pgsql-performance-owner@postgresql.org > [mailto:pgsql-performance-owner@postgresql.org]De la part de Albert > Cervera Areny > Envoyé : mardi 14 février 2006 12:38 > À : pgsql-performance@postgresql.org > Objet : Re: [PERFORM] copy and postgresql.conf > > > > Hi William, > which PostgreSQL version are you using? Newer (8.0+) versions have some > > important performance improvements for the COPY command. > > Also, you'll notice significant improvements by creating primary & foreign > > keys after the copy command. I think config tweaking can improve key and > > index creation but I don't think you can improve the COPY command itself. > > There are also many threads in this list commenting on this issue, you'll > > find it easely in the archives. > > A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure: > > hi, > > > > i load data from files using copy method. > > Files contain between 2 and 7 millions of rows, spread on 5 tables. > > > > For loading all the data, it takes 40mn, and the same processing takes > > 17mn with Oracle. I think that this time can be improved by changing > > postgresql configuration file. But which parameters i need to manipulate > > and with which values ? > > > > Here are the specifications of my system : > > V250 architecture sun4u > > 2xCPU UltraSparc IIIi 1.28 GHz. > > 8 Go RAM. > > > > Regards. > > > > Will > > > > > > This e-mail is intended only for the above addressee. It may contain > > privileged information. If you are not the addressee you must not copy, > > distribute, disclose or use any of the information in it. If you have > > received it in error please delete it and immediately notify the sender. > > Security Notice: all e-mail, sent to or from this address, may be > > accessed by someone other than the recipient, for system management and > > security reasons. This access is controlled under Regulation of > > Investigatory Powers Act 2000, Lawful Business Practises. > > > > ---------------------------(end of broadcast)--------------------------- > > TIP 4: Have you searched our list archives? > > > > http://archives.postgresql.org > > -- > > Albert Cervera Areny > Dept. Informàtica Sedifa, S.L. > > Av. Can Bordoll, 149 > 08202 - Sabadell (Barcelona) > Tel. 93 715 51 11 > Fax. 93 715 51 12 > > ==================================================================== > ........................ AVISO LEGAL ............................ > La presente comunicación y sus anexos tiene como destinatario la > persona a la que va dirigida, por lo que si usted lo recibe > por error debe notificarlo al remitente y eliminarlo de su > sistema, no pudiendo utilizarlo, total o parcialmente, para > ningún fin. Su contenido puede tener información confidencial o > protegida legalmente y únicamente expresa la opinión del > remitente. El uso del correo electrónico vía Internet no > permite asegurar ni la confidencialidad de los mensajes > ni su correcta recepción. En el caso de que el > destinatario no consintiera la utilización del correo electrónico, > deberá ponerlo en nuestro conocimiento inmediatamente. > ==================================================================== > ........................... DISCLAIMER ............................. > This message and its attachments are intended exclusively for the > named addressee. If you receive this message in error, please > immediately delete it from your system and notify the sender. You > may not use this message or any part of it for any purpose. > The message may contain information that is confidential or > protected by law, and any opinions expressed are those of the > individual sender. Internet e-mail guarantees neither the > confidentiality nor the proper receipt of the message sent. > If the addressee of this message does not consent to the use > of internet e-mail, please inform us inmmediately. > ==================================================================== > > > > > > ---------------------------(end of broadcast)--------------------------- > TIP 5: don't forget to increase your free space map settings > > > > This mail has originated outside your organization, > either from an external partner or the Global Internet. > Keep this in mind if you answer this message. > > > This e-mail is intended only for the above addressee. It may contain > privileged information. If you are not the addressee you must not copy, > distribute, disclose or use any of the information in it. If you have > received it in error please delete it and immediately notify the sender. > Security Notice: all e-mail, sent to or from this address, may be > accessed by someone other than the recipient, for system management and > security reasons. This access is controlled under Regulation of > Investigatory Powers Act 2000, Lawful Business Practises. -- Albert Cervera Areny Dept. Informàtica Sedifa, S.L. Av. Can Bordoll, 149 08202 - Sabadell (Barcelona) Tel. 93 715 51 11 Fax. 93 715 51 12 ==================================================================== ........................ AVISO LEGAL ............................ La presente comunicación y sus anexos tiene como destinatario la persona a la que va dirigida, por lo que si usted lo recibe por error debe notificarlo al remitente y eliminarlo de su sistema, no pudiendo utilizarlo, total o parcialmente, para ningún fin. Su contenido puede tener información confidencial o protegida legalmente y únicamente expresa la opinión del remitente. El uso del correo electrónico vía Internet no permite asegurar ni la confidencialidad de los mensajes ni su correcta recepción. En el caso de que el destinatario no consintiera la utilización del correo electrónico, deberá ponerlo en nuestro conocimiento inmediatamente. ==================================================================== ........................... DISCLAIMER ............................. This message and its attachments are intended exclusively for the named addressee. If you receive this message in error, please immediately delete it from your system and notify the sender. You may not use this message or any part of it for any purpose. The message may contain information that is confidential or protected by law, and any opinions expressed are those of the individual sender. Internet e-mail guarantees neither the confidentiality nor the proper receipt of the message sent. If the addressee of this message does not consent to the use of internet e-mail, please inform us inmmediately. ==================================================================== ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. This e-mail is intended only for the above addressee. It may contain privileged information. If you are not the addressee you must not copy, distribute, disclose or use any of the information in it. If you have received it in error please delete it and immediately notify the sender. Security Notice: all e-mail, sent to or from this address, may be accessed by someone other than the recipient, for system management and security reasons. This access is controlled under Regulation of Investigatory Powers Act 2000, Lawful Business Practises.
What version of Solaris are you using? Do you have the recommendations while using COPY on Solaris? http://blogs.sun.com/roller/page/jkshah?entry=postgresql_on_solaris_better_use wal_sync_method = fsync wal_buffers = 128 checkpoint_segments = 128 bgwriter_percent = 0 bgwriter_maxpages = 0 And also for /etc/system on Solaris 10, 9 SPARC use the following set maxphys=1048576 set md:md_maxphys=1048576 set segmap_percent=50 set ufs:freebehind=0 set msgsys:msginfo_msgmni = 3584 set semsys:seminfo_semmni = 4096 set shmsys:shminfo_shmmax = 15392386252 set shmsys:shminfo_shmmni = 4096 Can you try putting in one run with this values and send back your experiences on whether it helps your workload or not? Atleast I saw improvements using the above settings with COPY with Postgres 8.0 and Postgres 8.1 on Solaris. Regards, Jignesh FERREIRA, William (VALTECH) wrote: >30% faster !!! i will test this new version ... > >thanks a lot > >-----Message d'origine----- >De : pgsql-performance-owner@postgresql.org >[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert >Cervera Areny >Envoyé : mardi 14 février 2006 17:07 >À : pgsql-performance@postgresql.org >Objet : Re: [PERFORM] copy and postgresql.conf > > > >Sorry, COPY improvements came with 8.1 > >(http://www.postgresql.org/docs/whatsnew) > >A Dimarts 14 Febrer 2006 14:26, FERREIRA, William (VALTECH) va escriure: > > >>thanks, >> >>i'm using postgresql 8.0.3 >>there is no primary key and no index on my tables >> >>regards >> >>-----Message d'origine----- >>De : pgsql-performance-owner@postgresql.org >>[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert >>Cervera Areny >>Envoyé : mardi 14 février 2006 12:38 >>À : pgsql-performance@postgresql.org >>Objet : Re: [PERFORM] copy and postgresql.conf >> >> >> >>Hi William, >> which PostgreSQL version are you using? Newer (8.0+) versions have some >> >>important performance improvements for the COPY command. >> >> Also, you'll notice significant improvements by creating primary & foreign >> >>keys after the copy command. I think config tweaking can improve key and >> >>index creation but I don't think you can improve the COPY command itself. >> >> There are also many threads in this list commenting on this issue, you'll >> >>find it easely in the archives. >> >>A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure: >> >> >>>hi, >>> >>>i load data from files using copy method. >>>Files contain between 2 and 7 millions of rows, spread on 5 tables. >>> >>>For loading all the data, it takes 40mn, and the same processing takes >>>17mn with Oracle. I think that this time can be improved by changing >>>postgresql configuration file. But which parameters i need to manipulate >>>and with which values ? >>> >>>Here are the specifications of my system : >>>V250 architecture sun4u >>>2xCPU UltraSparc IIIi 1.28 GHz. >>>8 Go RAM. >>> >>>Regards. >>> >>> Will >>> >>> >>>This e-mail is intended only for the above addressee. It may contain >>>privileged information. If you are not the addressee you must not copy, >>>distribute, disclose or use any of the information in it. If you have >>>received it in error please delete it and immediately notify the sender. >>>Security Notice: all e-mail, sent to or from this address, may be >>>accessed by someone other than the recipient, for system management and >>>security reasons. This access is controlled under Regulation of >>>Investigatory Powers Act 2000, Lawful Business Practises. >>> >>>---------------------------(end of broadcast)--------------------------- >>>TIP 4: Have you searched our list archives? >>> >>> http://archives.postgresql.org >>> >>> >>-- >> >>Albert Cervera Areny >>Dept. Informàtica Sedifa, S.L. >> >>Av. Can Bordoll, 149 >>08202 - Sabadell (Barcelona) >>Tel. 93 715 51 11 >>Fax. 93 715 51 12 >> >>==================================================================== >>........................ AVISO LEGAL ............................ >>La presente comunicación y sus anexos tiene como destinatario la >>persona a la que va dirigida, por lo que si usted lo recibe >>por error debe notificarlo al remitente y eliminarlo de su >>sistema, no pudiendo utilizarlo, total o parcialmente, para >>ningún fin. Su contenido puede tener información confidencial o >>protegida legalmente y únicamente expresa la opinión del >>remitente. El uso del correo electrónico vía Internet no >>permite asegurar ni la confidencialidad de los mensajes >>ni su correcta recepción. En el caso de que el >>destinatario no consintiera la utilización del correo electrónico, >>deberá ponerlo en nuestro conocimiento inmediatamente. >>==================================================================== >>........................... DISCLAIMER ............................. >>This message and its attachments are intended exclusively for the >>named addressee. If you receive this message in error, please >>immediately delete it from your system and notify the sender. You >>may not use this message or any part of it for any purpose. >>The message may contain information that is confidential or >>protected by law, and any opinions expressed are those of the >>individual sender. Internet e-mail guarantees neither the >>confidentiality nor the proper receipt of the message sent. >>If the addressee of this message does not consent to the use >>of internet e-mail, please inform us inmmediately. >>==================================================================== >> >> >> >> >> >>---------------------------(end of broadcast)--------------------------- >>TIP 5: don't forget to increase your free space map settings >> >> >> >>This mail has originated outside your organization, >>either from an external partner or the Global Internet. >>Keep this in mind if you answer this message. >> >> >>This e-mail is intended only for the above addressee. It may contain >>privileged information. If you are not the addressee you must not copy, >>distribute, disclose or use any of the information in it. If you have >>received it in error please delete it and immediately notify the sender. >>Security Notice: all e-mail, sent to or from this address, may be >>accessed by someone other than the recipient, for system management and >>security reasons. This access is controlled under Regulation of >>Investigatory Powers Act 2000, Lawful Business Practises. >> >> > >-- > >Albert Cervera Areny >Dept. Informàtica Sedifa, S.L. > >Av. Can Bordoll, 149 >08202 - Sabadell (Barcelona) >Tel. 93 715 51 11 >Fax. 93 715 51 12 > >==================================================================== >........................ AVISO LEGAL ............................ >La presente comunicación y sus anexos tiene como destinatario la >persona a la que va dirigida, por lo que si usted lo recibe >por error debe notificarlo al remitente y eliminarlo de su >sistema, no pudiendo utilizarlo, total o parcialmente, para >ningún fin. Su contenido puede tener información confidencial o >protegida legalmente y únicamente expresa la opinión del >remitente. El uso del correo electrónico vía Internet no >permite asegurar ni la confidencialidad de los mensajes >ni su correcta recepción. En el caso de que el >destinatario no consintiera la utilización del correo electrónico, >deberá ponerlo en nuestro conocimiento inmediatamente. >==================================================================== >........................... DISCLAIMER ............................. >This message and its attachments are intended exclusively for the >named addressee. If you receive this message in error, please >immediately delete it from your system and notify the sender. You >may not use this message or any part of it for any purpose. >The message may contain information that is confidential or >protected by law, and any opinions expressed are those of the >individual sender. Internet e-mail guarantees neither the >confidentiality nor the proper receipt of the message sent. >If the addressee of this message does not consent to the use >of internet e-mail, please inform us inmmediately. >==================================================================== > > > > > >---------------------------(end of broadcast)--------------------------- >TIP 5: don't forget to increase your free space map settings > > > >This mail has originated outside your organization, >either from an external partner or the Global Internet. >Keep this in mind if you answer this message. > > >This e-mail is intended only for the above addressee. It may contain >privileged information. If you are not the addressee you must not copy, >distribute, disclose or use any of the information in it. If you have >received it in error please delete it and immediately notify the sender. >Security Notice: all e-mail, sent to or from this address, may be >accessed by someone other than the recipient, for system management and >security reasons. This access is controlled under Regulation of >Investigatory Powers Act 2000, Lawful Business Practises. > >---------------------------(end of broadcast)--------------------------- >TIP 6: explain analyze is your friend > >
i'm using Solaris8
i tried changing only postgresql parameters
and time has increased of 10mn
i keep in mind your idea, we will soon upgraded to solaris 10
regards
Will
-----Message d'origine-----
De : J.K.Shah@Sun.COM [mailto:J.K.Shah@Sun.COM]
Envoyé : mardi 14 février 2006 22:47
À : FERREIRA, William (VALTECH)
Cc : Albert Cervera Areny; pgsql-performance@postgresql.org
Objet : Re: [PERFORM] copy and postgresql.conf
What version of Solaris are you using?
Do you have the recommendations while using COPY on Solaris?
http://blogs.sun.com/roller/page/jkshah?entry=postgresql_on_solaris_better_use
wal_sync_method = fsync
wal_buffers = 128
checkpoint_segments = 128
bgwriter_percent = 0
bgwriter_maxpages = 0
And also for /etc/system on Solaris 10, 9 SPARC use the following
set maxphys=1048576
set md:md_maxphys=1048576
set segmap_percent=50
set ufs:freebehind=0
set msgsys:msginfo_msgmni = 3584
set semsys:seminfo_semmni = 4096
set shmsys:shminfo_shmmax = 15392386252
set shmsys:shminfo_shmmni = 4096
Can you try putting in one run with this values and send back your
experiences on whether it helps your workload or not?
Atleast I saw improvements using the above settings with COPY with
Postgres 8.0 and Postgres 8.1 on Solaris.
Regards,
Jignesh
FERREIRA, William (VALTECH) wrote:
>30% faster !!! i will test this new version ...
>
>thanks a lot
>
>-----Message d'origine-----
>De : pgsql-performance-owner@postgresql.org
>[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert
>Cervera Areny
>Envoyé : mardi 14 février 2006 17:07
>À : pgsql-performance@postgresql.org
>Objet : Re: [PERFORM] copy and postgresql.conf
>
>
>
>Sorry, COPY improvements came with 8.1
>
>(http://www.postgresql.org/docs/whatsnew)
>
>A Dimarts 14 Febrer 2006 14:26, FERREIRA, William (VALTECH) va escriure:
>
>
>>thanks,
>>
>>i'm using postgresql 8.0.3
>>there is no primary key and no index on my tables
>>
>>regards
>>
>>-----Message d'origine-----
>>De : pgsql-performance-owner@postgresql.org
>>[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert
>>Cervera Areny
>>Envoyé : mardi 14 février 2006 12:38
>>À : pgsql-performance@postgresql.org
>>Objet : Re: [PERFORM] copy and postgresql.conf
>>
>>
>>
>>Hi William,
>> which PostgreSQL version are you using? Newer (8.0+) versions have some
>>
>>important performance improvements for the COPY command.
>>
>> Also, you'll notice significant improvements by creating primary & foreign
>>
>>keys after the copy command. I think config tweaking can improve key and
>>
>>index creation but I don't think you can improve the COPY command itself.
>>
>> There are also many threads in this list commenting on this issue, you'll
>>
>>find it easely in the archives.
>>
>>A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure:
>>
>>
>>>hi,
>>>
>>>i load data from files using copy method.
>>>Files contain between 2 and 7 millions of rows, spread on 5 tables.
>>>
>>>For loading all the data, it takes 40mn, and the same processing takes
>>>17mn with Oracle. I think that this time can be improved by changing
>>>postgresql configuration file. But which parameters i need to manipulate
>>>and with which values ?
>>>
>>>Here are the specifications of my system :
>>>V250 architecture sun4u
>>>2xCPU UltraSparc IIIi 1.28 GHz.
>>>8 Go RAM.
>>>
>>>Regards.
>>>
>>> Will
>>>
>>>
>>>This e-mail is intended only for the above addressee. It may contain
>>>privileged information. If you are not the addressee you must not copy,
>>>distribute, disclose or use any of the information in it. If you have
>>>received it in error please delete it and immediately notify the sender.
>>>Security Notice: all e-mail, sent to or from this address, may be
>>>accessed by someone other than the recipient, for system management and
>>>security reasons. This access is controlled under Regulation of
>>>Investigatory Powers Act 2000, Lawful Business Practises.
>>>
>>>---------------------------(end of broadcast)---------------------------
>>>TIP 4: Have you searched our list archives?
>>>
>>> http://archives.postgresql.org
>>>
>>>
>>--
>>
>>Albert Cervera Areny
>>Dept. Informàtica Sedifa, S.L.
>>
>>Av. Can Bordoll, 149
>>08202 - Sabadell (Barcelona)
>>Tel. 93 715 51 11
>>Fax. 93 715 51 12
>>
>>====================================================================
>>........................ AVISO LEGAL ............................
>>La presente comunicación y sus anexos tiene como destinatario la
>>persona a la que va dirigida, por lo que si usted lo recibe
>>por error debe notificarlo al remitente y eliminarlo de su
>>sistema, no pudiendo utilizarlo, total o parcialmente, para
>>ningún fin. Su contenido puede tener información confidencial o
>>protegida legalmente y únicamente expresa la opinión del
>>remitente. El uso del correo electrónico vía Internet no
>>permite asegurar ni la confidencialidad de los mensajes
>>ni su correcta recepción. En el caso de que el
>>destinatario no consintiera la utilización del correo electrónico,
>>deberá ponerlo en nuestro conocimiento inmediatamente.
>>====================================================================
>>........................... DISCLAIMER .............................
>>This message and its attachments are intended exclusively for the
>>named addressee. If you receive this message in error, please
>>immediately delete it from your system and notify the sender. You
>>may not use this message or any part of it for any purpose.
>>The message may contain information that is confidential or
>>protected by law, and any opinions expressed are those of the
>>individual sender. Internet e-mail guarantees neither the
>>confidentiality nor the proper receipt of the message sent.
>>If the addressee of this message does not consent to the use
>>of internet e-mail, please inform us inmmediately.
>>====================================================================
>>
>>
>>
>>
>>
>>---------------------------(end of broadcast)---------------------------
>>TIP 5: don't forget to increase your free space map settings
>>
>>
>>
>>This mail has originated outside your organization,
>>either from an external partner or the Global Internet.
>>Keep this in mind if you answer this message.
>>
>>
>>This e-mail is intended only for the above addressee. It may contain
>>privileged information. If you are not the addressee you must not copy,
>>distribute, disclose or use any of the information in it. If you have
>>received it in error please delete it and immediately notify the sender.
>>Security Notice: all e-mail, sent to or from this address, may be
>>accessed by someone other than the recipient, for system management and
>>security reasons. This access is controlled under Regulation of
>>Investigatory Powers Act 2000, Lawful Business Practises.
>>
>>
>
>--
>
>Albert Cervera Areny
>Dept. Informàtica Sedifa, S.L.
>
>Av. Can Bordoll, 149
>08202 - Sabadell (Barcelona)
>Tel. 93 715 51 11
>Fax. 93 715 51 12
>
>====================================================================
>........................ AVISO LEGAL ............................
>La presente comunicación y sus anexos tiene como destinatario la
>persona a la que va dirigida, por lo que si usted lo recibe
>por error debe notificarlo al remitente y eliminarlo de su
>sistema, no pudiendo utilizarlo, total o parcialmente, para
>ningún fin. Su contenido puede tener información confidencial o
>protegida legalmente y únicamente expresa la opinión del
>remitente. El uso del correo electrónico vía Internet no
>permite asegurar ni la confidencialidad de los mensajes
>ni su correcta recepción. En el caso de que el
>destinatario no consintiera la utilización del correo electrónico,
>deberá ponerlo en nuestro conocimiento inmediatamente.
>====================================================================
>........................... DISCLAIMER .............................
>This message and its attachments are intended exclusively for the
>named addressee. If you receive this message in error, please
>immediately delete it from your system and notify the sender. You
>may not use this message or any part of it for any purpose.
>The message may contain information that is confidential or
>protected by law, and any opinions expressed are those of the
>individual sender. Internet e-mail guarantees neither the
>confidentiality nor the proper receipt of the message sent.
>If the addressee of this message does not consent to the use
>of internet e-mail, please inform us inmmediately.
>====================================================================
>
>
>
>
>
>---------------------------(end of broadcast)---------------------------
>TIP 5: don't forget to increase your free space map settings
>
>
>
>This mail has originated outside your organization,
>either from an external partner or the Global Internet.
>Keep this in mind if you answer this message.
>
>
>This e-mail is intended only for the above addressee. It may contain
>privileged information. If you are not the addressee you must not copy,
>distribute, disclose or use any of the information in it. If you have
>received it in error please delete it and immediately notify the sender.
>Security Notice: all e-mail, sent to or from this address, may be
>accessed by someone other than the recipient, for system management and
>security reasons. This access is controlled under Regulation of
>Investigatory Powers Act 2000, Lawful Business Practises.
>
>---------------------------(end of broadcast)---------------------------
>TIP 6: explain analyze is your friend
>
>
This mail has originated outside your organization,
either from an external partner or the Global Internet.
Keep this in mind if you answer this message.
This e-mail is intended only for the above addressee. It may contain
privileged information. If you are not the addressee you must not copy,
distribute, disclose or use any of the information in it. If you have
received it in error please delete it and immediately notify the sender.
Security Notice: all e-mail, sent to or from this address, may be
accessed by someone other than the recipient, for system management and
security reasons. This access is controlled under Regulation of
Investigatory Powers Act 2000, Lawful Business Practises.
Hi, Ferreira, FERREIRA, William (VALTECH) wrote: > i load data from files using copy method. > Files contain between 2 and 7 millions of rows, spread on 5 tables. > > For loading all the data, it takes 40mn, and the same processing takes 17mn with Oracle. > I think that this time can be improved by changing postgresql configuration file. > But which parameters i need to manipulate and with which values ? Increase the size of the wal. If its just a develpoment environment, or you don't mind data inconsistency in case of a crash, disable fsync. HTH, Markus -- Markus Schaber | Logical Tracking&Tracing International AG Dipl. Inf. | Software Development GIS Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org
i tested the last version version of PostgreSQL
and for the same test :
before : 40mn
and now : 12mn :)
faster than Oracle (exactly what i wanted :p )
thanks to everybody
Will
-----Message d'origine-----
De : pgsql-performance-owner@postgresql.org
[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert
Cervera Areny
Envoyé : mardi 14 février 2006 17:07
À : pgsql-performance@postgresql.org
Objet : Re: [PERFORM] copy and postgresql.conf
Sorry, COPY improvements came with 8.1
(http://www.postgresql.org/docs/whatsnew)
A Dimarts 14 Febrer 2006 14:26, FERREIRA, William (VALTECH) va escriure:
> thanks,
>
> i'm using postgresql 8.0.3
> there is no primary key and no index on my tables
>
> regards
>
> -----Message d'origine-----
> De : pgsql-performance-owner@postgresql.org
> [mailto:pgsql-performance-owner@postgresql.org]De la part de Albert
> Cervera Areny
> Envoyé : mardi 14 février 2006 12:38
> À : pgsql-performance@postgresql.org
> Objet : Re: [PERFORM] copy and postgresql.conf
>
>
>
> Hi William,
> which PostgreSQL version are you using? Newer (8.0+) versions have some
>
> important performance improvements for the COPY command.
>
> Also, you'll notice significant improvements by creating primary & foreign
>
> keys after the copy command. I think config tweaking can improve key and
>
> index creation but I don't think you can improve the COPY command itself.
>
> There are also many threads in this list commenting on this issue, you'll
>
> find it easely in the archives.
>
> A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure:
> > hi,
> >
> > i load data from files using copy method.
> > Files contain between 2 and 7 millions of rows, spread on 5 tables.
> >
> > For loading all the data, it takes 40mn, and the same processing takes
> > 17mn with Oracle. I think that this time can be improved by changing
> > postgresql configuration file. But which parameters i need to manipulate
> > and with which values ?
> >
> > Here are the specifications of my system :
> > V250 architecture sun4u
> > 2xCPU UltraSparc IIIi 1.28 GHz.
> > 8 Go RAM.
> >
> > Regards.
> >
> > Will
> >
> >
> > This e-mail is intended only for the above addressee. It may contain
> > privileged information. If you are not the addressee you must not copy,
> > distribute, disclose or use any of the information in it. If you have
> > received it in error please delete it and immediately notify the sender.
> > Security Notice: all e-mail, sent to or from this address, may be
> > accessed by someone other than the recipient, for system management and
> > security reasons. This access is controlled under Regulation of
> > Investigatory Powers Act 2000, Lawful Business Practises.
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 4: Have you searched our list archives?
> >
> > http://archives.postgresql.org
>
> --
>
> Albert Cervera Areny
> Dept. Informàtica Sedifa, S.L.
>
> Av. Can Bordoll, 149
> 08202 - Sabadell (Barcelona)
> Tel. 93 715 51 11
> Fax. 93 715 51 12
>
> ====================================================================
> ........................ AVISO LEGAL ............................
> La presente comunicación y sus anexos tiene como destinatario la
> persona a la que va dirigida, por lo que si usted lo recibe
> por error debe notificarlo al remitente y eliminarlo de su
> sistema, no pudiendo utilizarlo, total o parcialmente, para
> ningún fin. Su contenido puede tener información confidencial o
> protegida legalmente y únicamente expresa la opinión del
> remitente. El uso del correo electrónico vía Internet no
> permite asegurar ni la confidencialidad de los mensajes
> ni su correcta recepción. En el caso de que el
> destinatario no consintiera la utilización del correo electrónico,
> deberá ponerlo en nuestro conocimiento inmediatamente.
> ====================================================================
> ........................... DISCLAIMER .............................
> This message and its attachments are intended exclusively for the
> named addressee. If you receive this message in error, please
> immediately delete it from your system and notify the sender. You
> may not use this message or any part of it for any purpose.
> The message may contain information that is confidential or
> protected by law, and any opinions expressed are those of the
> individual sender. Internet e-mail guarantees neither the
> confidentiality nor the proper receipt of the message sent.
> If the addressee of this message does not consent to the use
> of internet e-mail, please inform us inmmediately.
> ====================================================================
>
>
>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: don't forget to increase your free space map settings
>
>
>
> This mail has originated outside your organization,
> either from an external partner or the Global Internet.
> Keep this in mind if you answer this message.
>
>
> This e-mail is intended only for the above addressee. It may contain
> privileged information. If you are not the addressee you must not copy,
> distribute, disclose or use any of the information in it. If you have
> received it in error please delete it and immediately notify the sender.
> Security Notice: all e-mail, sent to or from this address, may be
> accessed by someone other than the recipient, for system management and
> security reasons. This access is controlled under Regulation of
> Investigatory Powers Act 2000, Lawful Business Practises.
--
Albert Cervera Areny
Dept. Informàtica Sedifa, S.L.
Av. Can Bordoll, 149
08202 - Sabadell (Barcelona)
Tel. 93 715 51 11
Fax. 93 715 51 12
====================================================================
........................ AVISO LEGAL ............................
La presente comunicación y sus anexos tiene como destinatario la
persona a la que va dirigida, por lo que si usted lo recibe
por error debe notificarlo al remitente y eliminarlo de su
sistema, no pudiendo utilizarlo, total o parcialmente, para
ningún fin. Su contenido puede tener información confidencial o
protegida legalmente y únicamente expresa la opinión del
remitente. El uso del correo electrónico vía Internet no
permite asegurar ni la confidencialidad de los mensajes
ni su correcta recepción. En el caso de que el
destinatario no consintiera la utilización del correo electrónico,
deberá ponerlo en nuestro conocimiento inmediatamente.
====================================================================
........................... DISCLAIMER .............................
This message and its attachments are intended exclusively for the
named addressee. If you receive this message in error, please
immediately delete it from your system and notify the sender. You
may not use this message or any part of it for any purpose.
The message may contain information that is confidential or
protected by law, and any opinions expressed are those of the
individual sender. Internet e-mail guarantees neither the
confidentiality nor the proper receipt of the message sent.
If the addressee of this message does not consent to the use
of internet e-mail, please inform us inmmediately.
====================================================================
---------------------------(end of broadcast)---------------------------
TIP 5: don't forget to increase your free space map settings
This mail has originated outside your organization,
either from an external partner or the Global Internet.
Keep this in mind if you answer this message.
This e-mail is intended only for the above addressee. It may contain
privileged information. If you are not the addressee you must not copy,
distribute, disclose or use any of the information in it. If you have
received it in error please delete it and immediately notify the sender.
Security Notice: all e-mail, sent to or from this address, may be
accessed by someone other than the recipient, for system management and
security reasons. This access is controlled under Regulation of
Investigatory Powers Act 2000, Lawful Business Practises.
What's your postgresql.conf parameter for the equivalent ones that I suggested? I believe your wal_buffers and checkpoint_segments could be bigger. If that's the case then yep you are fine. As for the background writer I am seeing mixed results yet so not sure about that. But thanks for the feedback. -Jignesh FERREIRA, William (VALTECH) wrote: >i tested the last version version of PostgreSQL >and for the same test : >before : 40mn >and now : 12mn :) >faster than Oracle (exactly what i wanted :p ) > >thanks to everybody > > Will > > >-----Message d'origine----- >De : pgsql-performance-owner@postgresql.org >[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert >Cervera Areny >Envoyé : mardi 14 février 2006 17:07 >À : pgsql-performance@postgresql.org >Objet : Re: [PERFORM] copy and postgresql.conf > > > >Sorry, COPY improvements came with 8.1 > >(http://www.postgresql.org/docs/whatsnew) > >A Dimarts 14 Febrer 2006 14:26, FERREIRA, William (VALTECH) va escriure: > > >>thanks, >> >>i'm using postgresql 8.0.3 >>there is no primary key and no index on my tables >> >>regards >> >>-----Message d'origine----- >>De : pgsql-performance-owner@postgresql.org >>[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert >>Cervera Areny >>Envoyé : mardi 14 février 2006 12:38 >>À : pgsql-performance@postgresql.org >>Objet : Re: [PERFORM] copy and postgresql.conf >> >> >> >>Hi William, >> which PostgreSQL version are you using? Newer (8.0+) versions have some >> >>important performance improvements for the COPY command. >> >> Also, you'll notice significant improvements by creating primary & foreign >> >>keys after the copy command. I think config tweaking can improve key and >> >>index creation but I don't think you can improve the COPY command itself. >> >> There are also many threads in this list commenting on this issue, you'll >> >>find it easely in the archives. >> >>A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure: >> >> >>>hi, >>> >>>i load data from files using copy method. >>>Files contain between 2 and 7 millions of rows, spread on 5 tables. >>> >>>For loading all the data, it takes 40mn, and the same processing takes >>>17mn with Oracle. I think that this time can be improved by changing >>>postgresql configuration file. But which parameters i need to manipulate >>>and with which values ? >>> >>>Here are the specifications of my system : >>>V250 architecture sun4u >>>2xCPU UltraSparc IIIi 1.28 GHz. >>>8 Go RAM. >>> >>>Regards. >>> >>> Will >>> >>> >>>This e-mail is intended only for the above addressee. It may contain >>>privileged information. If you are not the addressee you must not copy, >>>distribute, disclose or use any of the information in it. If you have >>>received it in error please delete it and immediately notify the sender. >>>Security Notice: all e-mail, sent to or from this address, may be >>>accessed by someone other than the recipient, for system management and >>>security reasons. This access is controlled under Regulation of >>>Investigatory Powers Act 2000, Lawful Business Practises. >>> >>>---------------------------(end of broadcast)--------------------------- >>>TIP 4: Have you searched our list archives? >>> >>> http://archives.postgresql.org >>> >>> >>-- >> >>Albert Cervera Areny >>Dept. Informàtica Sedifa, S.L. >> >>Av. Can Bordoll, 149 >>08202 - Sabadell (Barcelona) >>Tel. 93 715 51 11 >>Fax. 93 715 51 12 >> >>==================================================================== >>........................ AVISO LEGAL ............................ >>La presente comunicación y sus anexos tiene como destinatario la >>persona a la que va dirigida, por lo que si usted lo recibe >>por error debe notificarlo al remitente y eliminarlo de su >>sistema, no pudiendo utilizarlo, total o parcialmente, para >>ningún fin. Su contenido puede tener información confidencial o >>protegida legalmente y únicamente expresa la opinión del >>remitente. El uso del correo electrónico vía Internet no >>permite asegurar ni la confidencialidad de los mensajes >>ni su correcta recepción. En el caso de que el >>destinatario no consintiera la utilización del correo electrónico, >>deberá ponerlo en nuestro conocimiento inmediatamente. >>==================================================================== >>........................... DISCLAIMER ............................. >>This message and its attachments are intended exclusively for the >>named addressee. If you receive this message in error, please >>immediately delete it from your system and notify the sender. You >>may not use this message or any part of it for any purpose. >>The message may contain information that is confidential or >>protected by law, and any opinions expressed are those of the >>individual sender. Internet e-mail guarantees neither the >>confidentiality nor the proper receipt of the message sent. >>If the addressee of this message does not consent to the use >>of internet e-mail, please inform us inmmediately. >>==================================================================== >> >> >> >> >> >>---------------------------(end of broadcast)--------------------------- >>TIP 5: don't forget to increase your free space map settings >> >> >> >>This mail has originated outside your organization, >>either from an external partner or the Global Internet. >>Keep this in mind if you answer this message. >> >> >>This e-mail is intended only for the above addressee. It may contain >>privileged information. If you are not the addressee you must not copy, >>distribute, disclose or use any of the information in it. If you have >>received it in error please delete it and immediately notify the sender. >>Security Notice: all e-mail, sent to or from this address, may be >>accessed by someone other than the recipient, for system management and >>security reasons. This access is controlled under Regulation of >>Investigatory Powers Act 2000, Lawful Business Practises. >> >> > >-- > >Albert Cervera Areny >Dept. Informàtica Sedifa, S.L. > >Av. Can Bordoll, 149 >08202 - Sabadell (Barcelona) >Tel. 93 715 51 11 >Fax. 93 715 51 12 > >==================================================================== >........................ AVISO LEGAL ............................ >La presente comunicación y sus anexos tiene como destinatario la >persona a la que va dirigida, por lo que si usted lo recibe >por error debe notificarlo al remitente y eliminarlo de su >sistema, no pudiendo utilizarlo, total o parcialmente, para >ningún fin. Su contenido puede tener información confidencial o >protegida legalmente y únicamente expresa la opinión del >remitente. El uso del correo electrónico vía Internet no >permite asegurar ni la confidencialidad de los mensajes >ni su correcta recepción. En el caso de que el >destinatario no consintiera la utilización del correo electrónico, >deberá ponerlo en nuestro conocimiento inmediatamente. >==================================================================== >........................... DISCLAIMER ............................. >This message and its attachments are intended exclusively for the >named addressee. If you receive this message in error, please >immediately delete it from your system and notify the sender. You >may not use this message or any part of it for any purpose. >The message may contain information that is confidential or >protected by law, and any opinions expressed are those of the >individual sender. Internet e-mail guarantees neither the >confidentiality nor the proper receipt of the message sent. >If the addressee of this message does not consent to the use >of internet e-mail, please inform us inmmediately. >==================================================================== > > > > > >---------------------------(end of broadcast)--------------------------- >TIP 5: don't forget to increase your free space map settings > > > >This mail has originated outside your organization, >either from an external partner or the Global Internet. >Keep this in mind if you answer this message. > > >This e-mail is intended only for the above addressee. It may contain >privileged information. If you are not the addressee you must not copy, >distribute, disclose or use any of the information in it. If you have >received it in error please delete it and immediately notify the sender. >Security Notice: all e-mail, sent to or from this address, may be >accessed by someone other than the recipient, for system management and >security reasons. This access is controlled under Regulation of >Investigatory Powers Act 2000, Lawful Business Practises. > >---------------------------(end of broadcast)--------------------------- >TIP 9: In versions below 8.0, the planner will ignore your desire to > choose an index scan if your joining column's datatypes do not > match > >
with PostgreSQL 8.1.3, here are my parameters (it's the default configuration) wal_sync_method = fsync wal_buffers = 8 checkpoint_segments = 3 bgwriter_lru_percent = 1.0 bgwriter_lru_maxpages = 5 bgwriter_all_percent = 0.333 bgwriter_all_maxpages = 5 and you think times can be improved again ? -----Message d'origine----- De : J.K.Shah@Sun.COM [mailto:J.K.Shah@Sun.COM] Envoyé : mercredi 15 février 2006 15:14 À : FERREIRA, William (VALTECH) Cc : Albert Cervera Areny; pgsql-performance@postgresql.org Objet : Re: [PERFORM] copy and postgresql.conf What's your postgresql.conf parameter for the equivalent ones that I suggested? I believe your wal_buffers and checkpoint_segments could be bigger. If that's the case then yep you are fine. As for the background writer I am seeing mixed results yet so not sure about that. But thanks for the feedback. -Jignesh FERREIRA, William (VALTECH) wrote: >i tested the last version version of PostgreSQL >and for the same test : >before : 40mn >and now : 12mn :) >faster than Oracle (exactly what i wanted :p ) > >thanks to everybody > > Will > > >-----Message d'origine----- >De : pgsql-performance-owner@postgresql.org >[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert >Cervera Areny >Envoyé : mardi 14 février 2006 17:07 >À : pgsql-performance@postgresql.org >Objet : Re: [PERFORM] copy and postgresql.conf > > > >Sorry, COPY improvements came with 8.1 > >(http://www.postgresql.org/docs/whatsnew) > >A Dimarts 14 Febrer 2006 14:26, FERREIRA, William (VALTECH) va escriure: > > >>thanks, >> >>i'm using postgresql 8.0.3 >>there is no primary key and no index on my tables >> >>regards >> >>-----Message d'origine----- >>De : pgsql-performance-owner@postgresql.org >>[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert >>Cervera Areny >>Envoyé : mardi 14 février 2006 12:38 >>À : pgsql-performance@postgresql.org >>Objet : Re: [PERFORM] copy and postgresql.conf >> >> >> >>Hi William, >> which PostgreSQL version are you using? Newer (8.0+) versions have some >> >>important performance improvements for the COPY command. >> >> Also, you'll notice significant improvements by creating primary & foreign >> >>keys after the copy command. I think config tweaking can improve key and >> >>index creation but I don't think you can improve the COPY command itself. >> >> There are also many threads in this list commenting on this issue, you'll >> >>find it easely in the archives. >> >>A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure: >> >> >>>hi, >>> >>>i load data from files using copy method. >>>Files contain between 2 and 7 millions of rows, spread on 5 tables. >>> >>>For loading all the data, it takes 40mn, and the same processing takes >>>17mn with Oracle. I think that this time can be improved by changing >>>postgresql configuration file. But which parameters i need to manipulate >>>and with which values ? >>> >>>Here are the specifications of my system : >>>V250 architecture sun4u >>>2xCPU UltraSparc IIIi 1.28 GHz. >>>8 Go RAM. >>> >>>Regards. >>> >>> Will >>> >>> >>>This e-mail is intended only for the above addressee. It may contain >>>privileged information. If you are not the addressee you must not copy, >>>distribute, disclose or use any of the information in it. If you have >>>received it in error please delete it and immediately notify the sender. >>>Security Notice: all e-mail, sent to or from this address, may be >>>accessed by someone other than the recipient, for system management and >>>security reasons. This access is controlled under Regulation of >>>Investigatory Powers Act 2000, Lawful Business Practises. >>> >>>---------------------------(end of broadcast)--------------------------- >>>TIP 4: Have you searched our list archives? >>> >>> http://archives.postgresql.org >>> >>> >>-- >> >>Albert Cervera Areny >>Dept. Informàtica Sedifa, S.L. >> >>Av. Can Bordoll, 149 >>08202 - Sabadell (Barcelona) >>Tel. 93 715 51 11 >>Fax. 93 715 51 12 >> >>==================================================================== >>........................ AVISO LEGAL ............................ >>La presente comunicación y sus anexos tiene como destinatario la >>persona a la que va dirigida, por lo que si usted lo recibe >>por error debe notificarlo al remitente y eliminarlo de su >>sistema, no pudiendo utilizarlo, total o parcialmente, para >>ningún fin. Su contenido puede tener información confidencial o >>protegida legalmente y únicamente expresa la opinión del >>remitente. El uso del correo electrónico vía Internet no >>permite asegurar ni la confidencialidad de los mensajes >>ni su correcta recepción. En el caso de que el >>destinatario no consintiera la utilización del correo electrónico, >>deberá ponerlo en nuestro conocimiento inmediatamente. >>==================================================================== >>........................... DISCLAIMER ............................. >>This message and its attachments are intended exclusively for the >>named addressee. If you receive this message in error, please >>immediately delete it from your system and notify the sender. You >>may not use this message or any part of it for any purpose. >>The message may contain information that is confidential or >>protected by law, and any opinions expressed are those of the >>individual sender. Internet e-mail guarantees neither the >>confidentiality nor the proper receipt of the message sent. >>If the addressee of this message does not consent to the use >>of internet e-mail, please inform us inmmediately. >>==================================================================== >> >> >> >> >> >>---------------------------(end of broadcast)--------------------------- >>TIP 5: don't forget to increase your free space map settings >> >> >> >>This mail has originated outside your organization, >>either from an external partner or the Global Internet. >>Keep this in mind if you answer this message. >> >> >>This e-mail is intended only for the above addressee. It may contain >>privileged information. If you are not the addressee you must not copy, >>distribute, disclose or use any of the information in it. If you have >>received it in error please delete it and immediately notify the sender. >>Security Notice: all e-mail, sent to or from this address, may be >>accessed by someone other than the recipient, for system management and >>security reasons. This access is controlled under Regulation of >>Investigatory Powers Act 2000, Lawful Business Practises. >> >> > >-- > >Albert Cervera Areny >Dept. Informàtica Sedifa, S.L. > >Av. Can Bordoll, 149 >08202 - Sabadell (Barcelona) >Tel. 93 715 51 11 >Fax. 93 715 51 12 > >==================================================================== >........................ AVISO LEGAL ............................ >La presente comunicación y sus anexos tiene como destinatario la >persona a la que va dirigida, por lo que si usted lo recibe >por error debe notificarlo al remitente y eliminarlo de su >sistema, no pudiendo utilizarlo, total o parcialmente, para >ningún fin. Su contenido puede tener información confidencial o >protegida legalmente y únicamente expresa la opinión del >remitente. El uso del correo electrónico vía Internet no >permite asegurar ni la confidencialidad de los mensajes >ni su correcta recepción. En el caso de que el >destinatario no consintiera la utilización del correo electrónico, >deberá ponerlo en nuestro conocimiento inmediatamente. >==================================================================== >........................... DISCLAIMER ............................. >This message and its attachments are intended exclusively for the >named addressee. If you receive this message in error, please >immediately delete it from your system and notify the sender. You >may not use this message or any part of it for any purpose. >The message may contain information that is confidential or >protected by law, and any opinions expressed are those of the >individual sender. Internet e-mail guarantees neither the >confidentiality nor the proper receipt of the message sent. >If the addressee of this message does not consent to the use >of internet e-mail, please inform us inmmediately. >==================================================================== > > > > > >---------------------------(end of broadcast)--------------------------- >TIP 5: don't forget to increase your free space map settings > > > >This mail has originated outside your organization, >either from an external partner or the Global Internet. >Keep this in mind if you answer this message. > > >This e-mail is intended only for the above addressee. It may contain >privileged information. If you are not the addressee you must not copy, >distribute, disclose or use any of the information in it. If you have >received it in error please delete it and immediately notify the sender. >Security Notice: all e-mail, sent to or from this address, may be >accessed by someone other than the recipient, for system management and >security reasons. This access is controlled under Regulation of >Investigatory Powers Act 2000, Lawful Business Practises. > >---------------------------(end of broadcast)--------------------------- >TIP 9: In versions below 8.0, the planner will ignore your desire to > choose an index scan if your joining column's datatypes do not > match > > This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. This e-mail is intended only for the above addressee. It may contain privileged information. If you are not the addressee you must not copy, distribute, disclose or use any of the information in it. If you have received it in error please delete it and immediately notify the sender. Security Notice: all e-mail, sent to or from this address, may be accessed by someone other than the recipient, for system management and security reasons. This access is controlled under Regulation of Investigatory Powers Act 2000, Lawful Business Practises.
Actually fsync is not the default on solaris (verify using "show all;) (If you look closely in postgresql.conf it is commented out and mentioned as default but show all tells a different story) In all my cases I saw the default as wal_sync_method | open_datasync Also I had seen quite an improvement by changing the default checkpoint_segments from 3 to 64 or 128 and also increasing wal_buffers to 64 depending on how heavy is your load. Also open_datasync type of operations benefit with forcedirectio on Solaris and hence either move wal to forcedirectio mounted file system or try changing default sync to fsync (the *said* default) Now if you use fsync then you need a bigger file system cache since by default Solaris's segmap mechanism only maps 12% of your physical ram to be used for file system buffer cache. Increasing segmap_percent to 50 on SPARC allows to use 50% of your RAM to be mapped to be used for 50% ( NOTE: It does not reserve but just allow mapping of the memory which can be used for file system buffer cache) Changing maxphys allows the file system buffer cache to coalesce writes from the 8Ks that PostgreSQL is doing to bigger writes/reads. Also since you are now exploiting file system buffer cache, file system Logging is very much recommended (available from a later update of Solaris 8 I believe). Regards, Jignesh FERREIRA, William (VALTECH) wrote: >with PostgreSQL 8.1.3, here are my parameters (it's the default configuration) > >wal_sync_method = fsync >wal_buffers = 8 >checkpoint_segments = 3 >bgwriter_lru_percent = 1.0 >bgwriter_lru_maxpages = 5 >bgwriter_all_percent = 0.333 >bgwriter_all_maxpages = 5 > >and you think times can be improved again ? > >-----Message d'origine----- >De : J.K.Shah@Sun.COM [mailto:J.K.Shah@Sun.COM] >Envoyé : mercredi 15 février 2006 15:14 >À : FERREIRA, William (VALTECH) >Cc : Albert Cervera Areny; pgsql-performance@postgresql.org >Objet : Re: [PERFORM] copy and postgresql.conf > > > >What's your postgresql.conf parameter for the equivalent ones that I >suggested? >I believe your wal_buffers and checkpoint_segments could be bigger. If >that's the case then yep you are fine. > >As for the background writer I am seeing mixed results yet so not sure >about that. > >But thanks for the feedback. > >-Jignesh > > >FERREIRA, William (VALTECH) wrote: > > > >>i tested the last version version of PostgreSQL >>and for the same test : >>before : 40mn >>and now : 12mn :) >>faster than Oracle (exactly what i wanted :p ) >> >>thanks to everybody >> >> Will >> >> >>-----Message d'origine----- >>De : pgsql-performance-owner@postgresql.org >>[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert >>Cervera Areny >>Envoyé : mardi 14 février 2006 17:07 >>À : pgsql-performance@postgresql.org >>Objet : Re: [PERFORM] copy and postgresql.conf >> >> >> >>Sorry, COPY improvements came with 8.1 >> >>(http://www.postgresql.org/docs/whatsnew) >> >>A Dimarts 14 Febrer 2006 14:26, FERREIRA, William (VALTECH) va escriure: >> >> >> >> >>>thanks, >>> >>>i'm using postgresql 8.0.3 >>>there is no primary key and no index on my tables >>> >>>regards >>> >>>-----Message d'origine----- >>>De : pgsql-performance-owner@postgresql.org >>>[mailto:pgsql-performance-owner@postgresql.org]De la part de Albert >>>Cervera Areny >>>Envoyé : mardi 14 février 2006 12:38 >>>À : pgsql-performance@postgresql.org >>>Objet : Re: [PERFORM] copy and postgresql.conf >>> >>> >>> >>>Hi William, >>> which PostgreSQL version are you using? Newer (8.0+) versions have some >>> >>>important performance improvements for the COPY command. >>> >>> Also, you'll notice significant improvements by creating primary & foreign >>> >>>keys after the copy command. I think config tweaking can improve key and >>> >>>index creation but I don't think you can improve the COPY command itself. >>> >>> There are also many threads in this list commenting on this issue, you'll >>> >>>find it easely in the archives. >>> >>>A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure: >>> >>> >>> >>> >>>>hi, >>>> >>>>i load data from files using copy method. >>>>Files contain between 2 and 7 millions of rows, spread on 5 tables. >>>> >>>>For loading all the data, it takes 40mn, and the same processing takes >>>>17mn with Oracle. I think that this time can be improved by changing >>>>postgresql configuration file. But which parameters i need to manipulate >>>>and with which values ? >>>> >>>>Here are the specifications of my system : >>>>V250 architecture sun4u >>>>2xCPU UltraSparc IIIi 1.28 GHz. >>>>8 Go RAM. >>>> >>>>Regards. >>>> >>>> Will >>>> >>>> >>>>This e-mail is intended only for the above addressee. It may contain >>>>privileged information. If you are not the addressee you must not copy, >>>>distribute, disclose or use any of the information in it. If you have >>>>received it in error please delete it and immediately notify the sender. >>>>Security Notice: all e-mail, sent to or from this address, may be >>>>accessed by someone other than the recipient, for system management and >>>>security reasons. This access is controlled under Regulation of >>>>Investigatory Powers Act 2000, Lawful Business Practises. >>>> >>>>---------------------------(end of broadcast)--------------------------- >>>>TIP 4: Have you searched our list archives? >>>> >>>> http://archives.postgresql.org >>>> >>>> >>>> >>>> >>>-- >>> >>>Albert Cervera Areny >>>Dept. Informàtica Sedifa, S.L. >>> >>>Av. Can Bordoll, 149 >>>08202 - Sabadell (Barcelona) >>>Tel. 93 715 51 11 >>>Fax. 93 715 51 12 >>> >>>==================================================================== >>>........................ AVISO LEGAL ............................ >>>La presente comunicación y sus anexos tiene como destinatario la >>>persona a la que va dirigida, por lo que si usted lo recibe >>>por error debe notificarlo al remitente y eliminarlo de su >>>sistema, no pudiendo utilizarlo, total o parcialmente, para >>>ningún fin. Su contenido puede tener información confidencial o >>>protegida legalmente y únicamente expresa la opinión del >>>remitente. El uso del correo electrónico vía Internet no >>>permite asegurar ni la confidencialidad de los mensajes >>>ni su correcta recepción. En el caso de que el >>>destinatario no consintiera la utilización del correo electrónico, >>>deberá ponerlo en nuestro conocimiento inmediatamente. >>>==================================================================== >>>........................... DISCLAIMER ............................. >>>This message and its attachments are intended exclusively for the >>>named addressee. If you receive this message in error, please >>>immediately delete it from your system and notify the sender. You >>>may not use this message or any part of it for any purpose. >>>The message may contain information that is confidential or >>>protected by law, and any opinions expressed are those of the >>>individual sender. Internet e-mail guarantees neither the >>>confidentiality nor the proper receipt of the message sent. >>>If the addressee of this message does not consent to the use >>>of internet e-mail, please inform us inmmediately. >>>==================================================================== >>> >>> >>> >>> >>> >>>---------------------------(end of broadcast)--------------------------- >>>TIP 5: don't forget to increase your free space map settings >>> >>> >>> >>>This mail has originated outside your organization, >>>either from an external partner or the Global Internet. >>>Keep this in mind if you answer this message. >>> >>> >>>This e-mail is intended only for the above addressee. It may contain >>>privileged information. If you are not the addressee you must not copy, >>>distribute, disclose or use any of the information in it. If you have >>>received it in error please delete it and immediately notify the sender. >>>Security Notice: all e-mail, sent to or from this address, may be >>>accessed by someone other than the recipient, for system management and >>>security reasons. This access is controlled under Regulation of >>>Investigatory Powers Act 2000, Lawful Business Practises. >>> >>> >>> >>> >>-- >> >>Albert Cervera Areny >>Dept. Informàtica Sedifa, S.L. >> >>Av. Can Bordoll, 149 >>08202 - Sabadell (Barcelona) >>Tel. 93 715 51 11 >>Fax. 93 715 51 12 >> >>==================================================================== >>........................ AVISO LEGAL ............................ >>La presente comunicación y sus anexos tiene como destinatario la >>persona a la que va dirigida, por lo que si usted lo recibe >>por error debe notificarlo al remitente y eliminarlo de su >>sistema, no pudiendo utilizarlo, total o parcialmente, para >>ningún fin. Su contenido puede tener información confidencial o >>protegida legalmente y únicamente expresa la opinión del >>remitente. El uso del correo electrónico vía Internet no >>permite asegurar ni la confidencialidad de los mensajes >>ni su correcta recepción. En el caso de que el >>destinatario no consintiera la utilización del correo electrónico, >>deberá ponerlo en nuestro conocimiento inmediatamente. >>==================================================================== >>........................... DISCLAIMER ............................. >>This message and its attachments are intended exclusively for the >>named addressee. If you receive this message in error, please >>immediately delete it from your system and notify the sender. You >>may not use this message or any part of it for any purpose. >>The message may contain information that is confidential or >>protected by law, and any opinions expressed are those of the >>individual sender. Internet e-mail guarantees neither the >>confidentiality nor the proper receipt of the message sent. >>If the addressee of this message does not consent to the use >>of internet e-mail, please inform us inmmediately. >>==================================================================== >> >> >> >> >> >>---------------------------(end of broadcast)--------------------------- >>TIP 5: don't forget to increase your free space map settings >> >> >> >>This mail has originated outside your organization, >>either from an external partner or the Global Internet. >>Keep this in mind if you answer this message. >> >> >>This e-mail is intended only for the above addressee. It may contain >>privileged information. If you are not the addressee you must not copy, >>distribute, disclose or use any of the information in it. If you have >>received it in error please delete it and immediately notify the sender. >>Security Notice: all e-mail, sent to or from this address, may be >>accessed by someone other than the recipient, for system management and >>security reasons. This access is controlled under Regulation of >>Investigatory Powers Act 2000, Lawful Business Practises. >> >>---------------------------(end of broadcast)--------------------------- >>TIP 9: In versions below 8.0, the planner will ignore your desire to >> choose an index scan if your joining column's datatypes do not >> match >> >> >> >> > > >This mail has originated outside your organization, >either from an external partner or the Global Internet. >Keep this in mind if you answer this message. > > >This e-mail is intended only for the above addressee. It may contain >privileged information. If you are not the addressee you must not copy, >distribute, disclose or use any of the information in it. If you have >received it in error please delete it and immediately notify the sender. >Security Notice: all e-mail, sent to or from this address, may be >accessed by someone other than the recipient, for system management and >security reasons. This access is controlled under Regulation of >Investigatory Powers Act 2000, Lawful Business Practises. > >---------------------------(end of broadcast)--------------------------- >TIP 3: Have you checked our extensive FAQ? > > http://www.postgresql.org/docs/faq > >
"FERREIRA, William (VALTECH)" <william.ferreira@airbus.com> writes:
> with PostgreSQL 8.1.3, here are my parameters (it's the default configuration)
> wal_sync_method = fsync
> wal_buffers = 8
> checkpoint_segments = 3
> bgwriter_lru_percent = 1.0
> bgwriter_lru_maxpages = 5
> bgwriter_all_percent = 0.333
> bgwriter_all_maxpages = 5
> and you think times can be improved again ?
Increasing checkpoint_segments will definitely help for any write-intensive
situation. It costs you in disk space of course, as well as the time
needed for post-crash recovery.
regards, tom lane