From: | Oleg Bartunov <oleg(at)sai(dot)msu(dot)su> |
---|---|
To: | Kris Kiger <kris(at)musicrebellion(dot)com> |
Cc: | pgsql-admin(at)postgresql(dot)org |
Subject: | Re: tsearch2 poor performance |
Date: | 2004-09-27 17:02:37 |
Message-ID: | Pine.GSO.4.58.0409272040090.14980@ra.sai.msu.su |
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Lists: | pgsql-admin pgsql-hackers |
Kris,
do you actually have only 508 disctinct words ? Could you try
more complex queries, say 2-3 words. Does these queries run faster ?
Oleg
On Mon, 27 Sep 2004, Kris Kiger wrote:
> Regardless of caching, the queries are still taking 19~20 seconds to run
> on the 3,000,000 rows. I've played with performance tuning and nothing
> seems to make much of a difference. If I am reading that list from stat
> correctly, then I am operating on 508 distinct words. Is this the
> performance I should expect from tsearch2? Or is something still awry?
> I'm inclined to think something else is wrong, after reading some
> other people's tsearch performance stats. Thanks!
>
> Kris
>
>
>
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Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83
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