| From: | Teodor Sigaev <teodor(at)sigaev(dot)ru> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-patches(at)postgreSQL(dot)org, Gregory Stark <stark(at)enterprisedb(dot)com>, Jan Wieck <JanWieck(at)Yahoo(dot)com> |
| Subject: | Re: Proposed patch to change TOAST compression strategy |
| Date: | 2008-02-18 10:01:38 |
| Message-ID: | 47B95782.7090302@sigaev.ru |
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| Lists: | pgsql-patches |
> 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(at)sigaev(dot)ru
WWW: http://www.sigaev.ru/
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