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Re: context-switching issue on Xeon

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Sailer, Denis (YBUSA-CDR)" <Denis(dot)Sailer(at)Yellowbook(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: context-switching issue on Xeon
Date: 2005-07-19 18:40:46
Message-ID: 8216.1121798446@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-performance
"Sailer, Denis (YBUSA-CDR)" <Denis(dot)Sailer(at)Yellowbook(dot)com> writes:
> http://archives.postgresql.org/pgsql-performance/2004-04/msg00280.php

> The last messages on this subject are from April of 2005.  Has there
> been any successful ways to significantly reduce the impact this has to
> multi-processing?

CVS tip should largely fix the problem as far as buffer manager
contention goes.

> I haven't been able to find anything showing a
> resolution of some kind.

Look at the Feb/March threads concerning buffer manager rewrite, clock
sweep, etc ... eg
http://archives.postgresql.org/pgsql-patches/2005-03/msg00015.php

			regards, tom lane

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