>> 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?
OK, I'll let it run overnight and give you the trace output.
> (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.)
Well, for the straight test on event_time, the rows in the table should
have been more-or-less physically already in order. This table is
most-insert, and event_time mostly corresponds to current server time.
For the composite index, rows would be more randomly distributed.
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com
