Re: Slow running to_tsvector (tsearch2 in PG 8.2.3)

[Oleg Bartunov <oleg(at)sai(dot)msu(dot)su>]

On Wed, 21 Feb 2007, Henrik Zagerholm wrote:

> Hello list,
>
> I've been testing tsearch2 for a while and I recently noticed some really 
> slow queries.
>
> This is a quite big document so the times are maybe accurate.
>
> The document has about 194 000 words.
>
> I put all the data in tbl_fulltext.fulltext_text and then did a
>
> update tbl_fulltext set vectors = to_tsvector(fulltext_text);
>
> Which takes about 80 seconds to complete.
> The hardware is a Pentium 4 2.8GHz with 1GB HyperX memory.
>
> Is this normal? What can I tweak in postgresql.conf to speed up big 
> to_tsvector()?

What is your configuration ? to_tsvector does a lot of work.

> Regards,
> Henrik
>
>
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	Regards,
		Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83