| From: | Scott Marlowe <smarlowe(at)g2switchworks(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp>, Postgresql Performance <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: High context switches occurring |
| Date: | 2005-12-07 16:24:33 |
| Message-ID: | 1133972672.11803.23.camel@state.g2switchworks.com |
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| Lists: | pgsql-performance |
On Tue, 2005-12-06 at 22:49, Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > Tom Lane wrote:
> >> 1. You don't want number of clients (-c) much higher than scaling factor
> >> (-s in the initialization step).
>
> > Should we throw a warning when someone runs the test this way?
>
> Not a bad idea (though of course only for the "standard" scripts).
> Tatsuo, what do you think?
Just to clarify, I think the pgbench program should throw the warning,
not postgresql itself. Not sure if that's what you were meaning or
not. Maybe even have it require a switch to run in such a mode, like a
--yes-i-want-to-run-a-meaningless-test switch or something.
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