Re: Huge performance problem between 7.4.1 and 8.0.3 - CS

When grilled further on (Mon, 18 Jul 2005 00:10:53 -0400),
Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> confessed:

> Have you tried reverting
> to the cron-based vacuuming method you used in 7.4?
>

I just stopped autovacuum, ran a manual vacuum analyze on 803 (2064 pages
needed, 8000000 FSM setting) and re-started the run (with cron vac enabled).
The query problem has not showed up yet (1/2 hour). A vacuum on 741 showed 3434
pages needed, 200000 FSM setting.

I'll let it run the night and see if it shows up after a couple of hours. It
has run clean for 1 hour prior. If this runs 'till morning, I'll re-enable the
autovacuum, disable the cron and see if it reproduces itself (the slowdown).

Cheers,
Rob

--
22:18:40 up 4 days, 1:53, 8 users, load average: 0.10, 0.20, 0.14
Linux 2.6.5-02 #8 SMP Mon Jul 12 21:34:44 MDT 2004