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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Sailer, Denis (YBUSA-CDR) <Denis.Sailer@Yellowbook.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: context-switching issue on Xeon
Date: Tue, 19 Jul 2005 14:40:46 -0400
Message-ID: <8216.1121798446@sss.pgh.pa.us> (raw)
In-Reply-To: <3FB3AAE149F4AD4D8499E15EE8CF41A3460442@YBCDREX01.corp.ybusa.net>
References: <3FB3AAE149F4AD4D8499E15EE8CF41A3460442@YBCDREX01.corp.ybusa.net>

"Sailer, Denis (YBUSA-CDR)" <Denis.Sailer@Yellowbook.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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