When grilled further on (Mon, 18 Jul 2005 00:10:53 -0400), Tom Lane <[EMAIL PROTECTED]> confessed:
> The context swap problem was no worse in 8.0 than in prior versions, > so that hardly seems like a good explanation. Have you tried reverting > to the cron-based vacuuming method you used in 7.4? > Ran 7 hours on 741 with VACUUM ANALYZE every 5 minutes. The largest CS I saw was 40k, with an average of 500 (via script which monitors vmstat output). I've done a VACUUM FULL ANALYZE on 803 and have switched the cron based VACUUM ANALYZE to 803 also. The tests are now running again. > Hmm, did you read this thread? > http://archives.postgresql.org/pgsql-performance/2005-07/msg00088.php I just glanced at it. Once I've reproduced (or not) the problem on 803 with the VACUUM FULL, I'll turn off the vacuum delay. Cheers, Rob -- 07:10:06 up 4 days, 10:45, 6 users, load average: 0.28, 0.40, 0.29 Linux 2.6.5-02 #8 SMP Mon Jul 12 21:34:44 MDT 2004
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