Re: 9.2beta1, parallel queries, ReleasePredicateLocks, CheckForSerializableConflictIn in the oprofile

Stephen Frost <sfrost@snowman.net>

From: Stephen Frost <sfrost@snowman.net>

To: Sergey Koposov <koposov@ast.cam.ac.uk>

Cc: Robert Haas <robertmhaas@gmail.com>, Merlin Moncure <mmoncure@gmail.com>, Jeff Janes <jeff.janes@gmail.com>, pgsql-hackers@postgresql.org

Date: 2012-05-26T14:24:40Z

Lists: pgsql-hackers

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Improve bulk-insert performance by keeping the current target buffer pinned
- 85e2cedf985b 8.4.0 cited

* Sergey Koposov (koposov@ast.cam.ac.uk) wrote:
> Turning off synch seq scans doesn't help either. 18 sec
> multithreaded run vs 7 sec single threaded.

Alright, can you just time 'cat' when they're started a few seconds or
whatever apart from each other?  I can't imagine it being affected in
the same way as these, but seems like it wouldn't hurt to check.

	Thanks,

		Stephen