| From: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
|---|---|
| To: | Anjan Dave <adave(at)vantage(dot)com> |
| Cc: | Scott Marlowe <smarlowe(at)g2switchworks(dot)com>, 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: | 2005-11-23 18:13:58 |
| Message-ID: | 1132769638.4347.7.camel@localhost.localdomain |
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| Thread: | |
| Lists: | pgsql-performance |
On Tue, 2005-11-22 at 18:17 -0500, Anjan Dave wrote:
> It's mostly a 'read' application, I increased the vm.max-readahead to
> 2048 from the default 256, after which I've not seen the CS storm,
> though it could be incidental.
Can you verify this, please?
Turn it back down again, try the test, then reset and try the test.
If that is a repeatable way of recreating one manifestation of the
problem then we will be further ahead than we are now.
Thanks,
Best Regards, Simon Riggs
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