Hello,
I checked my tests again I have different results. Now I tested
PostgreSQL on dedicated server. Now 8.3 is about 20% faster. I didn't
see strong impression of autovacuum. All numbers are approximate
only. I did pgbench 3x for folowing configuration: (autovacuum on,
autovacuum off, statistics off) and for -tntransaction (100, 1000,
4000)
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-t 100 629/638/639 630/630/646 581/654/656 -- 8.3
443/519/519 542/555/566 670/692/694 -- 8.2
-t 1000 622/626/653 630/635/653 631/631/652 -- 8.3
523/528/541 522/535/550 679/681/690 -- 8.2
-t 4000 632/635/644 248/385/651* 191/401/641* -- 8.3
465/472/520 237/336/538* 249/379/702* -- 8.2
8.2 is faster only if statistics are off
Note:
*I didn't use parametr v (do_vacuum_accounts)
I am sorry for noise
Regards
Pavel Stehule
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