From: | "Benjamin Krajmalnik" <kraj(at)servoyant(dot)com> |
---|---|
To: | "Bruce Momjian" <bruce(at)momjian(dot)us> |
Cc: | "Rajesh Kumar Mallah" <mallah(dot)rajesh(at)gmail(dot)com>, "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>, <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: cpu bound postgresql setup. |
Date: | 2010-06-29 15:11:53 |
Message-ID: | F4E6A2751A2823418A21D4A160B68988614660@fletch.stackdump.local |
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Thread: | |
Lists: | pgsql-performance |
Bruce,
Unfortunately not. The behavior I had was ebbs and flows. On FreeBSD,
I was seeing a lot of kernel wait states in top. So every few minutes,
responsiveness of the db was pretty bad. 8.4.4/amd64 on FreeBSD 7.2
> -----Original Message-----
> From: Bruce Momjian [mailto:bruce(at)momjian(dot)us]
> Sent: Monday, June 28, 2010 3:45 PM
> To: Benjamin Krajmalnik
> Cc: Rajesh Kumar Mallah; Kevin Grittner; pgsql-
> performance(at)postgresql(dot)org
> Subject: Re: [PERFORM] cpu bound postgresql setup.
>
> Benjamin Krajmalnik wrote:
> > Rajesh,
> >
> > I had a similar situation a few weeks ago whereby performance all of
> a
> > sudden decreased.
> > The one tunable which resolved the problem in my case was increasing
> the
> > number of checkpoint segments.
> > After increasing them, everything went back to its normal state.
>
> Did you get a db server log message suggesting in increasing that
> setting? I hope so.
>
> --
> Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
> EnterpriseDB http://enterprisedb.com
>
> + None of us is going to be here forever. +
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