Re: problem with large maintenance_work_mem settings and - Mailing list pgsql-hackers

On Wed, 2006-03-08 at 10:45 -0500, Tom Lane wrote:
> Stefan Kaltenbrunner <stefan@kaltenbrunner.cc> writes:
> > CREATE INDEX on a 1,8B row table (5 int columns - index created on the 
> > first row about 300M distinct values):
> 
> > before: 11h 51min
> > after: 3h 11min(!)
> 
> Cool.  Does it seem to be I/O bound now?  Would you be willing to do it
> over with oprofile turned on?

Very.

Any chance of trying it with different maintenance_work_mem settings?

Did you try this with trace_sort=on? If so could we get the logs for
that?

[Results welcome from other hackers...particularly with regard to
queries with sort steps in rather than CREATE INDEX.]

Best Regards, Simon Riggs