From: Peter Zijlstra <peterz@infradead.org>
To: Mike Galbraith <efault@gmx.de>
Cc: Ingo Molnar <mingo@elte.hu>, Greg Smith <gsmith@gregsmith.com>,
Dhaval Giani <dhaval@linux.vnet.ibm.com>,
lkml <linux-kernel@vger.kernel.org>,
Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Subject: Re: [patch] Re: PostgreSQL pgbench performance regression in 2.6.23+
Date: Sat, 07 Jun 2008 15:07:07 +0200 [thread overview]
Message-ID: <1212844027.19205.82.camel@lappy.programming.kicks-ass.net> (raw)
In-Reply-To: <1212843008.4934.16.camel@marge.simson.net>
On Sat, 2008-06-07 at 14:50 +0200, Mike Galbraith wrote:
> 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.
avg_overlap is about measuring how long we'll run after waking someone
else. The other measure, how long our waker shares the cpu with us,
hasn't proven to be relevant so far.
next prev parent reply other threads:[~2008-06-07 13:08 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-21 17:34 PostgreSQL pgbench performance regression in 2.6.23+ Greg Smith
2008-05-22 7:10 ` Mike Galbraith
2008-05-22 8:28 ` Dhaval Giani
2008-05-22 9:05 ` Mike Galbraith
2008-05-22 10:34 ` Mike Galbraith
2008-05-22 11:25 ` Mike Galbraith
2008-05-22 11:44 ` Peter Zijlstra
2008-05-22 12:09 ` Mike Galbraith
2008-05-22 12:24 ` Peter Zijlstra
2008-05-22 13:16 ` Mike Galbraith
2008-05-23 7:13 ` Greg Smith
2008-05-23 10:00 ` Mike Galbraith
2008-05-23 10:10 ` Ingo Molnar
2008-05-23 10:15 ` Mike Galbraith
2008-05-23 23:18 ` Greg Smith
2008-05-23 23:46 ` Mike Galbraith
2008-05-24 8:08 ` Mike Galbraith
2008-05-27 0:28 ` Greg Smith
2008-05-27 5:59 ` [patch] " Mike Galbraith
2008-05-27 8:20 ` Mike Galbraith
2008-05-27 8:35 ` Mike Galbraith
2008-06-06 5:03 ` Greg Smith
2008-06-06 6:13 ` Mike Galbraith
2008-06-07 11:38 ` Mike Galbraith
2008-06-07 12:50 ` Mike Galbraith
2008-06-07 13:07 ` Peter Zijlstra [this message]
2008-06-07 14:16 ` Mike Galbraith
2008-06-07 16:16 ` Peter Zijlstra
2008-06-07 17:56 ` Mike Galbraith
2008-06-07 13:08 ` Peter Zijlstra
2008-06-07 14:54 ` [patch part 2] " Mike Galbraith
2008-06-07 16:12 ` Peter Zijlstra
2008-06-07 17:53 ` Mike Galbraith
2008-06-07 18:19 ` Mike Galbraith
2008-05-23 13:05 ` Mike Galbraith
2008-05-23 13:35 ` Mike Galbraith
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