Re: Weird processes - Mailing list pgsql-admin

It would seem that SELECT queries are active for reasonably long periods of
time.  I would suggest using pgmonitor run as postgres and, using the
"query" functionality, grab the actual SQL being issued and run an EXPLAIN
on it.  It is likely that due to either table size, index or statistics
differences between your development and production databases, you are
experiencing the election of a different and less optimum query plan on one
machine vs. the other.  An "explain" would quickly confirm this.

Hope this helps.

Marc Mitchell - Senior Application Architect
Enterprise Information Solutions, Inc.
Downers Grove, IL 60515
marcm@eisolution.com



----- Original Message -----
From: "Gary DeSorbo" <isasitis@uchicago.edu>
To: <pgsql-admin@postgresql.org>
Sent: Wednesday, November 13, 2002 1:38 PM
Subject: [ADMIN] Weird processes


> I have been having some problems with my database/web server machine
> and ma having difficulty in finding out what the problem is. I have
> two machines configured exactly the same; one for development and one
> for production. Pages on production are taking up to 10X longer to
> load than the same pages on development. We have tested the line
> speeds and they are comparable.
>
> I have been searching through the processes and have come across some
> items that I have never seen on the machine before. The processes
> listed below seem to be hanging around much longer than they should
> be. Perl is the cgi and the only postgres user on this machine is the
> web server. Any help would be greatly appreciated. Below is the
> output:
>
> postgres  7633  2.6  2.2 505612 45968 ?      S    10:57   0:02
> postgres: postgres pro [local] SELECT
> nobody    7679  1.7  0.7 16792 15616 ?       S    10:57   0:01 perl
> /www/cgi-bin/reporting/report_search.pl
> nobody    7682  1.5  0.3  8712 7548 ?        S    10:57   0:01 perl
> /www/cgi-bin/staffing/orderconfirmation.pl
> postgres  7684  2.5  1.5 505100 32864 ?      S    10:57   0:02
> postgres: postgres pro [local] SELECT
> postgres  7685  1.4  1.6 505008 34508 ?      S    10:57   0:01
> postgres: postgres pro [local] idle
> postgres  7758  3.9  2.2 505088 45864 ?      S    10:58   0:02
> postgres: postgres pro [local] SELECT
> nobody    7768  0.7  0.3  8832 7672 ?        S    10:58   0:00 perl
> /www/cgi-bin/userapp/csc/contractor/contractorsearch.pl
> postgres  7769  2.2  1.5 505096 32864 ?      S    10:58   0:01
> postgres: postgres pro [local] SELECT
> nobody    7800  0.0  0.1  5384 2596 ?        S    10:58   0:00
> /www/bin/httpd -DSSL
> nobody    7842  0.3  0.3  8768 7600 ?        S    10:58   0:00 perl
> /www/cgi-bin/passthru.pl
> nobody    7846  0.4  0.3  8768 7600 ?        S    10:58   0:00 perl
> /www/cgi-bin/passthru.pl
> postgres  7853  2.5  1.5 505096 32860 ?      S    10:58   0:01
> postgres: postgres pro [local] SELECT
> nobody    7861  0.8  0.3  8624 7448 ?        S    10:58   0:00 perl
> /www/cgi-bin/staffing/supplier/resumesearch.pl
> postgres  7862  2.5  1.5 505100 32860 ?      S    10:58   0:01
> postgres: postgres pro [local] SELECT
> postgres  7870  1.6  1.5 505100 32916 ?      S    10:58   0:00
> postgres: postgres pro [local] idle
> nobody    7871  0.5  0.3  8776 7608 ?        S    10:58   0:00 perl
> /www/cgi-bin/staffing/orderdetail.pl
> postgres  7875  2.4  1.5 505100 32864 ?      S    10:58   0:01
> postgres: postgres pro [local] SELECT
> nobody    7891  0.9  0.3  8840 7680 ?        S    10:58   0:00 perl
> /www/cgi-bin/staffing/csc/orderdetailedit.pl
> postgres  7896  5.6  2.2 505612 46236 ?      S    10:58   0:02
> postgres: postgres pro [local] SELECT
> nobody    7917  0.8  0.3  8644 7468 ?        S    10:58   0:00 perl
> /www/cgi-bin/timecard/csc/force_process.pl
> postgres  7925  1.9  1.5 505100 32784 ?      S    10:58   0:00
> postgres: postgres pro [local] UPDATE
> nobody    7946  1.2  0.3  8640 7472 ?        S    10:58   0:00 perl
> /www/cgi-bin/staffing/orderdetail.pl
> postgres  7948  4.1  1.7 505016 35372 ?      R    10:58   0:01
> postgres: postgres pro [local] SELECT
> nobody    7950  0.0  0.1  5384 2592 ?        S    10:58   0:00
> /www/bin/httpd -DSSL
> nobody    7971  0.0  0.1  5384 2512 ?        S    10:58   0:00
> /www/bin/httpd -DSSL
> nobody    7993  1.5  0.3  8844 7684 ?        S    10:58   0:00 perl
> /www/cgi-bin/timecard/csc/create_invoice_search_form.pl
> nobody    7994  1.9  0.3  8688 7508 ?        S    10:58   0:00 perl
> /www/cgi-bin/timecard/supplier/submit_days.pl
> nobody    8004  1.3  0.3  8732 7564 ?        S    10:58   0:00 perl
> /www/cgi-bin/staffing/csc/financial_detail.pl
> postgres  8005  3.8  1.5 505100 32876 ?      S    10:58   0:01
> postgres: postgres pro [local] SELECT
> postgres  8007  0.7  1.1 505100 23268 ?      S    10:58   0:00
> postgres: postgres pro [local] SELECT
> postgres  8010  1.8  1.6 505096 34000 ?      S    10:58   0:00
> postgres: postgres pro [local] UPDATE
> nobody    8040  2.9  0.3  8844 7684 ?        S    10:59   0:00 perl
> /www/cgi-bin/timecard/csc/create_invoice_search_form.pl
> postgres  8047  3.6  1.5 505100 32876 ?      S    10:59   0:00
> postgres: postgres pro [local] SELECT
> nobody    8058  3.1  0.3  8692 7528 ?        S    10:59   0:00 perl
> /www/cgi-bin/login.pl
> nobody    8063  3.5  0.3  8716 7540 ?        S    10:59   0:00 perl
> /www/cgi-bin/userapp/csc/contractor/basic_info/basic_info.ppostgres
> 8069  0.8  1.0 505028 22104 ?      S    10:59   0:00 postgres:
> postgres pro [local] SELECT
> postgres  8074  4.5  1.5 505096 32904 ?      S    10:59   0:00
> postgres: postgres pro [local] idle
> nobody    8105  0.0  0.0  5260 1808 ?        S    10:59   0:00
> /www/bin/httpd -DSSL
> nobody    8109  7.5  0.3  8860 7684 ?        S    10:59   0:00 perl
> /www/cgi-bin/timecard/supplier/process_days.pl
> postgres  8113  2.0  0.8 505100 16692 ?      S    10:59   0:00
> postgres: postgres pro [local] SELECT
> nobody    8114 17.0  0.3  8852 7672 ?        S    10:59   0:00 perl
> /www/cgi-bin/timecard/supplier/process_days.pl
> postgres  8115  4.0  0.7 505100 15568 ?      S    10:59   0:00
> postgres: postgres pro [local] SELECT
> nobody    8117 21.3  0.3  8692 7528 ?        S    10:59   0:00 perl
> /www/cgi-bin/login.pl
> postgres  8118  7.0  0.9 505028 19256 ?      S    10:59   0:00
> postgres: postgres pro [local] SELECT
> nobody    8123 29.5  0.3  8584 7396 ?        S    10:59   0:00 perl
> /www/cgi-bin/passthru.pl
> postgres  8127 26.0  1.2 505100 25156 ?      S    10:59   0:00
> postgres: postgres pro [local] SELECT
>
> Gary DeSorbo
> isasitis@uchicago.edu
> Cell: 415.606.3857
>
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