| 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: | 2008-02-29 12:41:05 |
| Message-ID: | 47C7FD61.3050205@sigaev.ru |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-patches |
Tsvector dump (taken by Magnus from mail archives of pgsql's lists)
http://www.sigaev.ru/misc/tstest.sql.bz2
Query:
select sum(ts_rank( vector, 'asdfjkl' )) from tstest ;
ts_rank detoasts value in any case, even tsvector doesn't contain needed lexemes.
Test was on my notebook: Core2 Duo 1.8MHz, 2Gb with default postgres.conf
8.4 without patch:
Time: 10883,368 ms
8.4 with patch (db was reinited)
Time: 9654,266 ms
--
Teodor Sigaev E-mail: teodor(at)sigaev(dot)ru
WWW: http://www.sigaev.ru/
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