From: | "Dan Armbrust" <daniel(dot)armbrust(dot)list(at)gmail(dot)com> |
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To: | "Erik Jones" <erik(at)myemma(dot)com> |
Cc: | "pgsql general" <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: Deadlock situation? |
Date: | 2008-04-29 22:30:55 |
Message-ID: | 82f04dc40804291530m2fe4b8ccqf2555008cf2944b3@mail.gmail.com |
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Lists: | pgsql-general |
Semantics of deadlock aside, I seem to be deadlocked, yet postgres
didn't detect any deadlock situation.
There are no DDL queries running. Just a lot of updates, and some
inserts and deletes.
I had to restart postgres to let things recover - so I can't gather
any more info right now - but if/when it happens again, I'd like to
know what else to gather.
Looking at the time stamps, the transaction start timestamp of this
autovacuum query is the oldest one:
autovacuum: VACUUM public.iphost 2008-04-24 03:05:13.212436-05 |
Then, between 03:05:37 and 03:05:38, nearly every other connection
came to a halt.
A few connections came to a halt several hours later.
I'm baffled, because this autovacuum query seems to have locked the
entire database.
I also don't know what the "waiting" column means in the output - but
they all have the flag of "f". Does that column means that it is
waiting on a lock - t or f?
Thanks,
Dan
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