Hi Tom,
This is on unixware 7 (both 7.3.4 and 7.4b)
I'm on the FR language (I'll re-initdb whith lang=C to see what happens)
But I never had a problem before.
Waiting for a reply, I drop the table after copying it, and arranged sql
script to create the indexes BEFORE the COPY
The overall process took only 5 Min.
On Thu, 28 Aug 2003, Tom Lane wrote:
> Date: Thu, 28 Aug 2003 10:13:21 -0400
> From: Tom Lane <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Cc: pgsql-hackers list <[EMAIL PROTECTED]>
> Subject: Re: [HACKERS] Index creation takes for ever
>
> [EMAIL PROTECTED] writes:
> > I've then pg_dump'ed the database and recreate an other both on 7.3.4 and
> > 7.4b
>
> > Both are still running after more than 30 minutes of CPU (100% cpu taken)
> > creating the levt_lu_ligne_evt_key.
>
> That's hard to believe. I get
>
> regression=# SELECT levt_lu,count(*) from ligne_evt group by levt_lu;
> levt_lu | count
> ---------+--------
> N | 49435
> O | 181242
> (2 rows)
>
> Time: 6927.28 ms
> regression=# create index levt_lu_ligne_evt_key on ligne_evt (levt_lu);
> CREATE INDEX
> Time: 14946.74 ms
>
> on a not-very-fast machine ... and it seems to be mostly I/O bound.
>
> What platform are you on? I could believe that the local qsort() is
> incredibly inefficient with many equal keys. Another possibility is
> that you're using a non-C locale and strcoll() is horribly slow.
>
> regards, tom lane
>
--
Olivier PRENANT Tel: +33-5-61-50-97-00 (Work)
6, Chemin d'Harraud Turrou +33-5-61-50-97-01 (Fax)
31190 AUTERIVE +33-6-07-63-80-64 (GSM)
FRANCE Email: [EMAIL PROTECTED]
------------------------------------------------------------------------------
Make your life a dream, make your dream a reality. (St Exupery)
---------------------------(end of broadcast)---------------------------
TIP 3: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to [EMAIL PROTECTED] so that your
message can get through to the mailing list cleanly
