Re: database running slow
От | Andrew Sullivan |
---|---|
Тема | Re: database running slow |
Дата | |
Msg-id | 20030514174606.GR20729@libertyrms.info обсуждение исходный текст |
Ответ на | Re: database running slow (Shankar K <shan0075@yahoo.com>) |
Список | pgsql-admin |
On Tue, May 13, 2003 at 10:19:55AM -0700, Shankar K wrote: > > Define "run-away". You can look for long-running > transactions; that might be helpful. > > ++ i meant a backend process taking most of the cpu > cycles and running for ever. so i wanted to figure out > what those processes were doing and what made them to > hog the cpu cycles. You can use the pid of a process to look it up in the system tables. There's no simple way to identify long-running ones, except to look for back ends that have been hanging around for a long time (but if you're using pooling, it won't help you). Tools like top will be helpful in identifying processor hogs. > ++ how to identify those queries. once i have the If you can identify the process, then you can identify the pid, and use the pid in the stats tables to get the query. A -- ---- Andrew Sullivan 204-4141 Yonge Street Liberty RMS Toronto, Ontario Canada <andrew@libertyrms.info> M2P 2A8 +1 416 646 3304 x110
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