Qingqing Zhou wrote: > A similar problem was reported before: > > http://archives.postgresql.org/pgsql-admin/2005-12/msg00266.php > > But we conclude that's not related to pgstats. See if that's related to > your situation. Unfortunately, I don't think so. The 8.0.3 run just fine. And I don't see any pgsql_tmp files. The problems started after migration to 8.1.2. I posted to pgsql-bugs, following Tom suggestion. BTW, I made some benchmarks on test machine (which is 32bit 2xPIII 1.4GHz) with pgbench and I was quite amazed: pgbench -S -c 50 -t 10000 -v pgbench with stats collector disabled resulted in: tps = 3178.346439 (including connections establishing) tps = 3183.360731 (excluding connections establishing) with stats collector enabled, but stats_command_prompt disabled: tps = 3143.376908 (including connections establishing) tps = 3147.564695 (excluding connections establishing) and with stats_command_prompt enabled: tps = 2446.136610 (including connections establishing) tps = 2448.785260 (excluding connections establishing) However, I didn't notice any suspicious write activity. Thanks for suggestion, -- Marcin
