Re: vacuum performance

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Alan Stange <stange(at)rentec(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: vacuum performance
Date: 2004-03-19 06:18:20
Message-ID: 20588.1079677100@sss.pgh.pa.us
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Alan Stange <stange(at)rentec(dot)com> writes:
> I do a truss on the process and see the output below looping over and
> over. Note the constant opening and closing of the file 42064889.3.
> Why the open/close cycle as opposed to caching the file descriptor
> somewhere?

This is probably a "blind write". We've gotten rid of those for 7.5.

regards, tom lane

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