linux-kernel - Re: [patch] Re: PostgreSQL pgbench performance regression in 2.6.23+

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Message-Id: <1212843008.4934.16.camel@marge.simson.net>
Date:	Sat, 07 Jun 2008 14:50:08 +0200
From:	Mike Galbraith <efault@....de>
To:	Ingo Molnar <mingo@...e.hu>, Greg Smith <gsmith@...gsmith.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
Subject: Re: [patch] Re: PostgreSQL pgbench performance regression in
	2.6.23+

Since I tested mysql+oltp and made the dang pdf of the results, I may
as well actually attach the thing <does that before continuing...>.

BTW, I have a question wrt avg_overlap.  When a wakeup cause the current
task to begin sharing CPU with a freshly awakened task, the current task
is tagged.. but the wakee isn't.  How come?  If one is sharing, so is
the other.

	-Mike

Download attachment "zz.pdf" of type "application/pdf" (16583 bytes)