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Re: How to diagnose a *context-switching * storm problem ?

From: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
To: <pgsql-bugs-owner(at)postgresql(dot)org>, <pgsql-performance(at)postgresql(dot)org>, RD黄永卫 <yongwei_huang(at)temp(dot)gtmc(dot)com(dot)cn>
Subject: Re: How to diagnose a *context-switching * storm problem ?
Date: 2010-04-12 21:39:48
Message-ID: 4BC34CD40200002500030765@gw.wicourts.gov (view raw or flat)
Thread:
Lists: pgsql-performance
RD黄永卫<yongwei_huang(at)temp(dot)gtmc(dot)com(dot)cn> wrote: 
 
> My database server get sluggish suddenly
 
> [vmstat output showing over 200,000 context switches per second]
 
>    My postgres version: 8.1.3;
 
Upgrading should help.  Later releases are less vulnerable to this.
 
> Could you please give me some advice ?
 
A connection pooler can often help.  (e.g., pgpool or pgbouncer)
 
-Kevin

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