Re: [HACKERS] Patch to log usage of temporary files

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Bill Moran <wmoran(at)collaborativefusion(dot)com>, pgsql-hackers(at)postgresql(dot)org, Andrew Dunstan <andrew(at)dunslane(dot)net>, pgsql-patches(at)postgresql(dot)org
Subject: Re: [HACKERS] Patch to log usage of temporary files
Date: 2007-01-09 22:29:34
Message-ID: 200701092229.l09MTYL23763@momjian.us
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Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > Tom Lane wrote:
> >> Surely the measurement unit should be kbytes or disk blocks. And why
> >> aren't you using that GUC UNITS infrastructure Peter put in?
>
> > Agreed. I have applied the following patch to make it kilobytes, and
> > documented it. I didn't put '-1kB' in the postgresql.conf file because
> > the -1 value is special. (ideas?)
>
> Hmm, that could be a little bit ugly. Suggestion: redefine the value
> such that files *greater than* the given size are logged, and then zero
> can be the "off" position, and we need not worry about whether -1 is
> -1 byte or -1 kbyte.

Uh, the problem is that if you want all files logged, 1 does everything
1kb and larger, skipping a 500-byte file, for example. There are also
many places where -1 is off and 0 is all, so we would be inconsistent
with that too.

--
Bruce Momjian bruce(at)momjian(dot)us
EnterpriseDB http://www.enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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