| From: | Scott Marlowe <smarlowe(at)g2switchworks(dot)com> |
|---|---|
| To: | Anjan Dave <adave(at)vantage(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Vivek Khera <vivek(at)khera(dot)org>, Postgresql Performance <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: High context switches occurring |
| Date: | 2005-11-22 20:37:47 |
| Message-ID: | 1132691867.28788.42.camel@state.g2switchworks.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
On Tue, 2005-11-22 at 14:33, Anjan Dave wrote:
> Is there any way to get a temporary relief from this Context Switching
> storm? Does restarting postmaster help?
>
> It seems that I can recreate the heavy CS with just one SELECT
> statement...and then when multiple such SELECT queries are coming in,
> things just get hosed up until we cancel a bunch of queries...
Is your machine a hyperthreaded one? Some folks have found that turning
off hyper threading helps. I knew it made my servers better behaved in
the past.
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