"Mahadevan, Mridula" <Mridula(dot)Mahadevan(at)ironmountain(dot)com> writes:
> This has been running fine for a while on multiple setups, large and small volumes. The setups all have the same hardware configuration.

> On one particular setup with about 200k records and this analyze runs for 45min and then times out(statement timeout is set to 45 min). typically this takes a few seconds at best. But when I move the analyze outside the loop everything runs fine.

Is it actually *running*, as in doing something, or is it just blocked?
I can't immediately think of any reason for some other process to have
a lock on a temp table that belongs to your process; but it seems
unlikely that ANALYZE would randomly take much longer than expected
unless something was preventing it from making progress.

Look into pg_locks and/or watch the backend with strace next time this
happens.

			regards, tom lane

In response to

• Analyze on temp table taking very long at 2011-03-22 16:13:30 from Mahadevan, Mridula

Responses

• Re: Analyze on temp table taking very long at 2011-03-25 17:32:42 from Mahadevan, Mridula

pgsql-performance by date

Next:	From: felix	Date: 2011-03-23 00:52:55
	Subject: good old VACUUM FULL
Previous:	From: Josh Berkus	Date: 2011-03-22 21:24:36
	Subject: Re: Performance on AIX