details: db version: postgres (PostgreSQL) 8.3.0 OS version: FreeBSD 7.0-RELEASE stats collector eating whole single CPU last week or so... TOP lookin like: PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 69360 pgsql 1 124 0 22380K 5548K CPU0 1 258.6H 99.02% postgres where 69360 is: USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND pgsql 69360 100,0 0,1 22380 5548 ?? Rs 20мар08 15513:55,99 postgres: stats collector process (postgres) Server is dedicated server for DB... under small load so stats collector eat more CPU then all other db activity by 5-10x. Stats collector itself doing his work (eg i see all required requests in pg_stat_activity and counts work well too). And stat collector add a lot system load on server. ktrace/kdump this process show just one sequence: 69360 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) 69360 postgres RET poll -1 errno 4 Interrupted system call 69360 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) 69360 postgres RET poll -1 errno 4 Interrupted system call 69360 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) 69360 postgres RET poll -1 errno 4 Interrupted system call 69360 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) 69360 postgres RET poll -1 errno 4 Interrupted system call 69360 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) kdump.out for 1 second size over 10Mbytes. Look like something wrong going on. Any idea what happend and how to fix situation (after postgres reboot situation become bad again in few days). -- Maxim Boguk
