Re: 8.4 open item: copy performance regression?

"Kevin Grittner" <Kevin.Grittner@wicourts.gov> writes:
> Tom Lane <tgl@sss.pgh.pa.us> wrote: 
>> I am unable to duplicate any slowdown on this test case.

> [ Kevin can ]

It'd be useful first off to figure out if it's a CPU or I/O issue.
Is there any visible difference in vmstat output?  Also, try turning
off autovacuum in both cases, just to see if that's related.
        regards, tom lane