Re: Problems monitoring DB activity

Sounds like the Oracle parameter TIMED_STATISTICS. Costs you soo little
in performance, but saves you a pile in troubleshooting. Many DBA's
still set it to false to "save the expense". Nice to know the same
exists here.

Dick Goulet
Senior Oracle DBA
Oracle Certified 8i DBA
-----Original Message-----
From: Michael Fuhr [mailto:mike(at)fuhr(dot)org]
Sent: Friday, October 08, 2004 11:15 AM
To: Doug Y
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: [ADMIN] Problems monitoring DB activity

On Fri, Oct 08, 2004 at 10:46:56AM -0400, Doug Y wrote:
> Michael Fuhr wrote:
> >
> >Does postgresql.conf have stats_command_string = true?
> >
> Thanks, setting that did the trick.... whats the performance hit for
> having it enabled?

I haven't done any tests to determine the performance penalty; maybe one
of the developers or somebody who's done some benchmarks can comment.

The "Annotated postgresql.conf and Global User Configuration (GUC)
Guide"[1] says that "Enabling statistics collection costs a small amount
of time per query, but is invaluable for debugging and performance
tuning."

[1]
http://www.varlena.com/varlena/GeneralBits/Tidbits/annotated_conf_e.html

--
Michael Fuhr
http://www.fuhr.org/~mfuhr/

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