Re: About “context-switching issue on Xeon” test case ？

From: Greg Smith <greg(at)2ndquadrant(dot)com>
To: RD黄永卫 <yongwei_huang(at)temp(dot)gtmc(dot)com(dot)cn>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: About “context-switching issue on Xeon” test case ？
Date: 2010-04-10 04:02:35
Message-ID: 4BBFF85B.60107@2ndquadrant.com
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RD黄永卫 wrote:
>
> Anybody have the test case of “ context-switching issue on Xeon” from
> Tm lane ？
>

That takes me back:
http://archives.postgresql.org/pgsql-performance/2004-04/msg00280.php

That's a problem seen on 2004 era Xeon processors, and with PostgreSQL
7.4. I doubt it has much relevance nowadays, given a) that whole area of
the code was rewritten for PostgreSQL 8.1, and b) today's Xeons are
nothing like 2004's Xeons.

--
Greg Smith 2ndQuadrant US Baltimore, MD
PostgreSQL Training, Services and Support
greg(at)2ndQuadrant(dot)com www.2ndQuadrant.us

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