Re: cpu bound postgresql setup. - Mailing list pgsql-performance

From Benjamin Krajmalnik
Subject Re: cpu bound postgresql setup.
Date
Msg-id F4E6A2751A2823418A21D4A160B68988614660@fletch.stackdump.local
Whole thread Raw
In response to Re: cpu bound postgresql setup.  (Bruce Momjian)
Responses Re: cpu bound postgresql setup.  (Bruce Momjian)
List 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:]
> Sent: Monday, June 28, 2010 3:45 PM
> To: Benjamin Krajmalnik
> Cc: Rajesh Kumar Mallah; Kevin Grittner; pgsql-
> 
> 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  <>        http://momjian.us
>   EnterpriseDB                             http://enterprisedb.com
>
>   + None of us is going to be here forever. +

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