Thread: Quick Question!
Hi: A really simple question: I wanna set up some WAL related config parameter. I am wondering is it the same to add those parameter on postgresql.conf as to add them on /etc/rc.d/init.d/postgres.init??
Hi, I am about to put a 7.1.2 server into production on RedHat 7.1 The server will be dedicated to PostgreSQL, running a bare minimum of additional services. If anyone has already tuned the configurable parameters on a dual PIII w/ 1GB RAM then I will have a great place to start for my performance tuning! When I'm done I'll be posting my results here for the next first timer that comes along. Thanks in advance, Adam
Am Dienstag, 10. Juli 2001 13:44 schrieb Adam Manock: > Hi, > > I am about to put a 7.1.2 server into production on RedHat 7.1 > The server will be dedicated to PostgreSQL, running a bare minimum of > additional services. > If anyone has already tuned the configurable parameters on a dual PIII w/ > 1GB RAM then I > will have a great place to start for my performance tuning! i am running the same hardware and postgresql 7.1.2 but i didnt tuned it because its fast enough for my purpose. But i am very interested in your investigations. Could you please pm me, if you have something of interest? thanks janning > When I'm done I'll be posting my results here for the next first timer that > comes along. > > Thanks in advance, > > Adam > > > ---------------------------(end of broadcast)--------------------------- > TIP 6: Have you searched our list archives? > > http://www.postgresql.org/search.mpl -- Planwerk 6 /websolutions Herzogstra�e 86 40215 D�sseldorf fon 0211-6015919 fax 0211-6015917 http://www.planwerk6.de
On Tue, Jul 10, 2001 at 07:44:34AM -0400, Adam Manock wrote: : Hi, : : I am about to put a 7.1.2 server into production on RedHat 7.1 : The server will be dedicated to PostgreSQL, running a bare minimum of : additional services. : If anyone has already tuned the configurable parameters on a dual PIII w/ : 1GB RAM then I : will have a great place to start for my performance tuning! : When I'm done I'll be posting my results here for the next first timer that : comes along. I have a similar system. It's a dual PII-450MHz Xeon with 512MB of RAM running RH7.1 and 7.1.2. As far as performance tuning goes, here's the relevant lines from the postgresql.conf file we're using: max_connections = 64 # 1-1024 sort_mem = 8192 shared_buffers = 192 fsync = false Obviously, depending on your needs, you can adjust those. If you've got a 1GB of RAM, I'd set everything high and not worry about it. * Philip Molter * DataFoundry.net * http://www.datafoundry.net/ * philip@datafoundry.net
On Tue, 10 Jul 2001, Adam Manock wrote:
> Hi,
>
> I am about to put a 7.1.2 server into production on RedHat 7.1
> The server will be dedicated to PostgreSQL, running a bare minimum of
> additional services.
> If anyone has already tuned the configurable parameters on a dual PIII w/
> 1GB RAM then I
> will have a great place to start for my performance tuning!
> When I'm done I'll be posting my results here for the next first timer that
> comes along.
I've just did a quick read of Bruce's article in Linux Journal. My take
is this is more than a hardware issue. Table size, indexes (indices?)
verses sequential scans will come into play. I don't think you can even
really test without some relevant data, queries, etc.
Again this was a very quick read of the article.
Thanks Bruce. It looks enlightening.
Cheers,
Rod
--
Remove the word 'try' from your vocabulary ...
Don't try. Do it or don't do it ...
Steers try!
Don Aslett
Hi all, Just added these figures to a new document : http://techdocs.postgresql.org/techdocs/perftuningfigures.php As people provide/submit figures and details of the equipment they use, I'll post them onto this page. Hopefully it will become a good set of real world guidelines for people, etc. Standardised benchmarks would be nice to though. :-) Regards and best wishes, Justin Clift Philip Molter wrote: > > On Tue, Jul 10, 2001 at 07:44:34AM -0400, Adam Manock wrote: > : Hi, > : > : I am about to put a 7.1.2 server into production on RedHat 7.1 > : The server will be dedicated to PostgreSQL, running a bare minimum of > : additional services. > : If anyone has already tuned the configurable parameters on a dual PIII w/ > : 1GB RAM then I > : will have a great place to start for my performance tuning! > : When I'm done I'll be posting my results here for the next first timer that > : comes along. > > I have a similar system. It's a dual PII-450MHz Xeon with 512MB of RAM > running RH7.1 and 7.1.2. As far as performance tuning goes, here's the > relevant lines from the postgresql.conf file we're using: > > max_connections = 64 # 1-1024 > sort_mem = 8192 > shared_buffers = 192 > fsync = false > > Obviously, depending on your needs, you can adjust those. If you've > got a 1GB of RAM, I'd set everything high and not worry about it. > > * Philip Molter > * DataFoundry.net > * http://www.datafoundry.net/ > * philip@datafoundry.net > > ---------------------------(end of broadcast)--------------------------- > TIP 6: Have you searched our list archives? > > http://www.postgresql.org/search.mpl
At 01:32 PM 7/11/01 +1000, Justin Clift wrote:
> Standardised benchmarks would be nice to though.
Sure would be nice....
Here's some preliminary results of my testing...
System: RedHat Linux 7.1, kernel 2.4.3smp (i686)
Dual PIII 733 / 133FSB 1024MB RAM
2 18Gb 10000rpm U160 SCSI drives, hardware RAID1
added to /etc/sysctl.conf:
kernel.shmmax = 268435456
kernel.shmall = 268435456
PG 7.1.2
postgresql-7.1.2-4PGDG binary rpm set
relevant entries from postgresql.conf:
max_connections = 32
sort_mem = 4096
shared_buffers = 32000
fsync = true
The only benchmark I have is almost useless but I'll put it here anyway...
time ./pg_regress --schedule=parallel_schedule
(using postmaster on Unix socket, default port)
...
...
======================
All 76 tests passed.
======================
real 0m40.784s
user 0m1.980s
sys 0m1.220s
Adam.