From: Greg Smith <greg@2ndquadrant.com>
To: RD黄永卫 <yongwei_huang@temp.gtmc.com.cn>
Cc: pgsql-performance@postgresql.org
Subject: Re: About “context-switching issue on Xeon” test case ？
Date: Sat, 10 Apr 2010 00:02:35 -0400
Message-ID: <4BBFF85B.60107@2ndquadrant.com> (raw)
In-Reply-To: <EDA3764BC9DBA043AABB8FF57D73237801B5CBDB@QFWA0016.gtmcl.com>
References: <EDA3764BC9DBA043AABB8FF57D73237801B5CBDB@QFWA0016.gtmcl.com>
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@2ndQuadrant.com www.2ndQuadrant.us
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To: pgsql-performance@postgresql.org
Cc: greg@2ndquadrant.com, yongwei_huang@temp.gtmc.com.cn
Subject: Re: About “context-switching issue on Xeon” test case ？
In-Reply-To: <4BBFF85B.60107@2ndquadrant.com>
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