Re: Anyone seen this kind of lock pileup? - Mailing list pgsql-performance

From Josh Berkus
Subject Re: Anyone seen this kind of lock pileup?
Date
Msg-id 4CE4510E.9050302@agliodbs.com
Whole thread Raw
In response to Re: Anyone seen this kind of lock pileup?  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-performance
> Hmm ... can you extract a test case?  Or at least strace the backends
> involved?

No, and no.  Strace was the first thing I thought of, but I'd have to
somehow catch one of these backends in the 3 seconds it's locked.  Not
really feasible.

It might be possible to construct a test case, depending on how much the
user wants to spend on the problem.  I'd estimate that a test case would
take 8-12 hours of my time to get working, given the level of activity
and concurrency required.

--
                                  -- Josh Berkus
                                     PostgreSQL Experts Inc.
                                     http://www.pgexperts.com

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