"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