Re: Multicolun index creation never completes on 9.0.1/solaris

Josh Berkus <josh(at)agliodbs(dot)com> writes:
> LOG: finished writing run 1 to tape 0: CPU 33.39s/149.02u sec elapsed
> 190.11 sec

> LOG: finished writing run 2 to tape 1: CPU 62.72s/371.06u sec elapsed
> 443.16 sec

> LOG: finished writing run 3 to tape 2: CPU 91.04s/599.43u sec elapsed
> 701.37 sec

> LOG: finished writing run 4 to tape 3: CPU 120.95s/823.59u sec elapsed
> 956.67 sec

> If it's going to take 3 minutes each to write each of 3745 tapes, that
> means completing in around 9 days.

Your logic has nothing to do with what is actually happening. Could we
have a little bit more patience to see what happens next?

> ... run 2 didn't complete in even 1/2 hour.

That's *good*, not bad. Long runs mean fewer merge steps.

(Memo to -hackers: what we lack in this trace is any indication of how
long the runs are. Maybe should add that. Knuth claims the initial
runs should amount to about 2X maintenance_work_mem on average, but
maybe there's something unusual about the data distribution here.)

regards, tom lane