Re: tsearch2 poor performance

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
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
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
>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 3: if posting/reading through Usenet, please send an appropriate
> subscribe-nomail command to majordomo(at)postgresql(dot)org so that your
> message can get through to the mailing list cleanly
>

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

In response to

Responses

Browse pgsql-admin by date

  From Date Subject
Next Message Kris Kiger 2004-09-27 17:30:49 Re: tsearch2 poor performance
Previous Message Kris Kiger 2004-09-27 16:32:30 Re: tsearch2 poor performance

Browse pgsql-hackers by date

  From Date Subject
Next Message Kris Kiger 2004-09-27 17:30:49 Re: tsearch2 poor performance
Previous Message Kris Kiger 2004-09-27 16:32:30 Re: tsearch2 poor performance