From: Teodor Sigaev <teodor@sigaev.ru>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-patches@postgreSQL.org, Gregory Stark <stark@enterprisedb.com>
Cc: Jan Wieck <JanWieck@Yahoo.com>
Subject: Re: Proposed patch to change TOAST compression strategy
Date: Mon, 18 Feb 2008 13:01:38 +0300
Message-ID: <47B95782.7090302@sigaev.ru> (raw)
In-Reply-To: <26048.1203271939@sss.pgh.pa.us>
References: <26048.1203271939@sss.pgh.pa.us>
> This proposed patch addresses some issues in TOAST compression strategy that
> I have not done any performance testing of these changes --- does
> anyone have specific test scenarios they'd like to try?
That's very important change for text search, because of tsvector storage.
Headline and rank reads a lot of tsvectors. It seems to me that ranking test
will be very clear: rank function reads whole tsvector and returns small amount
of data (just a number).
Another testing focus may be a lossy indexes, like a index over polygons.
--
Teodor Sigaev E-mail: teodor@sigaev.ru
WWW: http://www.sigaev.ru/
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To: pgsql-patches@postgresql.org
Cc: teodor@sigaev.ru, tgl@sss.pgh.pa.us, stark@enterprisedb.com, JanWieck@Yahoo.com
Subject: Re: Proposed patch to change TOAST compression strategy
In-Reply-To: <47B95782.7090302@sigaev.ru>
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