Jeff Trout <threshar@threshar.is-a-geek.com> writes:
> I've seen this on my PITR restores (thankfully, they were for
> fetching some old data, not because we expoded). On a 2.4ghz opteron
> it took 5-50 seconds per wal segment, and there were a LOT of
> segments (replay took hours and hours). I asked a few folks and was
> told it is the nature of the beast. Hopefully something in 8.4 can
> be done.
Before we get all panicked about that, someone should try to measure the
restore speed on 8.3. It's possible that this patch already
alleviated the problem:
http://archives.postgresql.org/pgsql-committers/2007-05/msg00041.php
regards, tom lane