From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Ben Chobot <bench(at)silentmedia(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: vacuum issues under load? |
Date: | 2010-01-15 15:29:17 |
Message-ID: | 28624.1263569357@sss.pgh.pa.us |
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Lists: | pgsql-general |
Ben Chobot <bench(at)silentmedia(dot)com> writes:
> On Fri, 15 Jan 2010, Tom Lane wrote:
>> OK, so it's trying to get an exclusive page-level lock on some page of
>> the index. The only thing that could block that for any long period is
>> if some other process is sitting with an open indexscan. Look around
>> for processes that have been "idle in transaction" for a long time ...
> There are some, but they've all been running less than a second. There's
> no better place to look than pg_stat_activity, is there?
Hmph. Given that, what we seem to be looking at is a leaked buffer pin
count. There isn't any easy way to fix that except a database restart
--- perhaps you can manage one over the weekend?
I don't recall having heard of any such bugs lately, but 8.1.x is kind
of an old branch. I'm still wondering if slony might've been involved
somehow.
regards, tom lane
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