Re: bgwriter changes

From: Mark Kirkwood <markir(at)coretech(dot)co(dot)nz>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: Neil Conway <neilc(at)samurai(dot)com>, Mark Wong <markw(at)osdl(dot)org>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: bgwriter changes
Date: 2004-12-15 21:32:07
Message-ID: 41C0AD57.4030003@coretech.co.nz
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Simon Riggs wrote:

>
>100pct.patch (SR)
>
>Test results to date:
>1. Mark Kirkwood ([HACKERS] [Testperf-general] BufferSync and bgwriter)
>pgbench 1xCPU 1xDisk shared_buffers=10000
>showed 8.0RC1 had regressed compared with 7.4.6, but patch improved
>performance significantly against 8.0RC1
>
>
>
>
It occurs to me that cranking up the number of transactions (say
1000->100000) and seeing if said regression persists would be
interesting. This would give the smoothing effect of the bgwriter (plus
the ARC) a better chance to shine.

regards

Mark

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