Re: stat /etc/localtime 38000 times on startup?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andrew Dunstan <andrew(at)dunslane(dot)net>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: stat /etc/localtime 38000 times on startup?
Date: 2006-01-08 19:47:23
Message-ID: 26218.1136749643@sss.pgh.pa.us
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Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
> I just traced starting up a postmaster, and got over 38000 lines like this:
> stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=1267, ...}) = 0
> I assume it comes from the timezone library, but it seems highly
> inefficient. Anyone know why we might get this?

glibc's strftime does that if you don't have a TZ value set in the
postmaster's environment.

http://archives.postgresql.org/pgsql-hackers/2005-10/msg00884.php

regards, tom lane

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