Re: Spinlocks, yet again: analysis and proposed patches

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Cc: Greg Stark <gsstark(at)mit(dot)edu>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Marko Kreen <marko(at)l-t(dot)ee>
Subject: Re: Spinlocks, yet again: analysis and proposed patches
Date: 2005-09-13 16:11:03
Message-ID: 200509130911.03677.josh@agliodbs.com
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Tom, All:

> It seems to me what you've found is an outright bug in the linux scheduler.
> Perhaps posting it to linux-kernel would be worthwhile.

For people using this on Linux 2.6, which scheduler are you using? Deadline
is the recommended one for databases, and does offer significant (+5-8%)
benefits in some heavy-contention environments, at least in OSDL tests.

--
Josh Berkus
Aglio Database Solutions
San Francisco

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