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Re: WIP: preloading of ispell dictionary

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Bruce Momjian <bruce(at)momjian(dot)us>
Cc: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Craig Ringer <craig(at)postnewspapers(dot)com(dot)au>, Nicolas Barbier <nicolas(dot)barbier(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: WIP: preloading of ispell dictionary
Date: 2010-03-24 14:46:20
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
Bruce Momjian <bruce(at)momjian(dot)us> writes:
> OK, what would the TODO text be?

I think there are really two tasks here:

* preprocess the textual dictionary definition files into something
that can be slurped directly into memory;

* use mmap() instead of read() to read preprocessed files into memory,
on machines where such a syscall is available.

There would be considerable gain from task #1 even without mmap.

			regards, tom lane

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Subject: Re: Performance Improvement for Unique Indexes
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