Re: POSIX regex performance bug in 7.3 Vs. 7.2

From: Hannu Krosing <hannu(at)tm(dot)ee>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Neil Conway <neilc(at)samurai(dot)com>, Jon Jensen <jon(at)endpoint(dot)com>, wade <wade(at)wavefire(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: POSIX regex performance bug in 7.3 Vs. 7.2
Date: 2003-02-05 09:59:16
Message-ID: 1044439155.1612.60.camel@localhost.localdomain
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Tom Lane kirjutas K, 05.02.2003 kell 08:12:
> Hannu Krosing <hannu(at)tm(dot)ee> writes:
> > Another idea is to make special regex type and store the regexes
> > pre-parsed (i.e. in some fast-load form) ?
>
> Seems unlikely that going out to disk could beat just recompiling the
> regexp.

We have to get _something_ from disk anyway. Currently we fetch regex
source code, but if there were some format that is faster to load then
that could be an option.

--
Hannu Krosing <hannu(at)tm(dot)ee>

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