On Wed, 28 Jun 2006, Martijn van Oosterhout wrote:

> On Wed, Jun 28, 2006 at 01:09:23PM +0400, Teodor Sigaev wrote:
>> We tested gin with 5 millions records (but not a wikipedia's text, but with
>> blog records which is usually mush shorter) and index creation time was
>> near 8 hours on Dual Xeon 3.2, but we didn't try GiST. In other hand,
>> creating GiST index on 0.5 millions emails took about 12 hours.
>>
>> That's why 7 minutes is very suspicious result.
>
> Tom did commit a patch a while ago which made a huge difference in
> index creation time for tsearch by changing one routine. I don't know
> if it got backpatched, so it might be worth checking people are working
> on the same version.

it's on 8.1.4 and speedup is about 10 times.

>
> Have a nice day,
>

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

---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match