From: Tom Lane <tgl@sss.pgh.pa.us>
To: Brian Cox <brian.cox@ca.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: "slow" queries
Date: Mon, 02 Mar 2009 14:29:31 -0500
Message-ID: <22227.1236022171@sss.pgh.pa.us> (raw)
In-Reply-To: <49AC23FF.9070103@ca.com>
References: <49AC23FF.9070103@ca.com>
Brian Cox <brian.cox@ca.com> writes:
> select locktype,database,relation,virtualxid,virtualtransaction,pid,mode
> from pg_locks order by mode;
If you hadn't left out the "granted" column we could be more sure,
but what it looks like to me is the DROP (pid 13842) is stuck behind
the <IDLE> transaction (pid 13833). In particular these two rows of
pg_locks look like a possible conflict:
> relation | 26472437 | 26472508 | | 15/69749
> | 13842 | AccessExclusiveLock
> relation | 26472437 | 26472508 | | 11/131
> | 13833 | AccessShareLock
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, brian.cox@ca.com
Subject: Re: "slow" queries
In-Reply-To: <22227.1236022171@sss.pgh.pa.us>
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