Pavel Stehule wrote:
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)
In other news, 8.3 with current HOT is 13% faster than 8.2 at TPCE in
the first 1/2 hour. Performance does not fall over 5 hours of test run,
and most of the main tables never have autovacuum triggered at all.
Unfortnately, we don't yet have a 5-hour 8.2 run to compare
last-half-hour performance.
--Josh
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