From: Mike Galbraith <efault@gmx.de>
To: Ingo Molnar <mingo@elte.hu>
Cc: Dhaval Giani <dhaval@linux.vnet.ibm.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Srivatsa Vaddagiri <vatsa@in.ibm.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] sched: revert load_balance_monitor()
Date: Thu, 28 Feb 2008 17:13:11 +0100 [thread overview]
Message-ID: <1204215191.4319.7.camel@homer.simson.net> (raw)
In-Reply-To: <20080228132627.GA24096@elte.hu>
On Thu, 2008-02-28 at 14:26 +0100, Ingo Molnar wrote:
> Mike, could you check whether today's sched-devel.git (which includes
> the full revert) works well for you? (with group scheduler enabled)
No, it's fairly lurchy with three root chew-max and one user chew-max
running. Moving the mouse around while they're running, I can see/feel
the load, and max latency for the user chew-max quickly shoots to
>500ms.
Running the same with mainline + full revert, the load is not palpable
and max latency for user task was 83ms.
Group CPU distribution otoh is better than mainline git + full revert.
root
out 16 ms [max: 295, avg: 14, flu: 2, avg_flu: 7], ran for 20 ms
out 16 ms [max: 295, avg: 14, flu: 0, avg_flu: 7], ran for 9 ms
out 5 ms [max: 295, avg: 14, flu: 10, avg_flu: 7], ran for 13 ms
out 33 ms [max: 295, avg: 14, flu: 28, avg_flu: 7], ran for 12 ms
out 12 ms [max: 295, avg: 14, flu: 20, avg_flu: 7], ran for 13 ms
out 16 ms [max: 295, avg: 14, flu: 3, avg_flu: 7], ran for 4 ms
out 21 ms [max: 295, avg: 14, flu: 4, avg_flu: 7], ran for 8 ms
root
out 7 ms [max: 248, avg: 14, flu: 3, avg_flu: 8], ran for 5 ms
out 27 ms [max: 248, avg: 14, flu: 20, avg_flu: 8], ran for 13 ms
out 17 ms [max: 248, avg: 14, flu: 10, avg_flu: 8], ran for 9 ms
out 8 ms [max: 248, avg: 14, flu: 8, avg_flu: 8], ran for 7 ms
out 6 ms [max: 248, avg: 14, flu: 2, avg_flu: 8], ran for 9 ms
out 10 ms [max: 248, avg: 14, flu: 3, avg_flu: 8], ran for 10 ms
out 8 ms [max: 248, avg: 14, flu: 1, avg_flu: 8], ran for 12 ms
out 13 ms [max: 248, avg: 14, flu: 5, avg_flu: 8], ran for 9 ms
root
out 11 ms [max: 366, avg: 14, flu: 2, avg_flu: 6], ran for 7 ms
out 10 ms [max: 366, avg: 14, flu: 1, avg_flu: 6], ran for 5 ms
out 12 ms [max: 366, avg: 14, flu: 1, avg_flu: 6], ran for 9 ms
out 10 ms [max: 366, avg: 14, flu: 1, avg_flu: 6], ran for 8 ms
out 13 ms [max: 366, avg: 14, flu: 2, avg_flu: 6], ran for 13 ms
out 11 ms [max: 366, avg: 14, flu: 2, avg_flu: 6], ran for 13 ms
out 9 ms [max: 366, avg: 14, flu: 2, avg_flu: 6], ran for 9 ms
user
out 3 ms [max: 509, avg: 20, flu: 1, avg_flu: 13], ran for 27 ms
out 2 ms [max: 509, avg: 20, flu: 0, avg_flu: 13], ran for 12 ms
out 2 ms [max: 509, avg: 20, flu: 0, avg_flu: 13], ran for 2 ms
out 25 ms [max: 509, avg: 20, flu: 22, avg_flu: 13], ran for 74 ms
out 3 ms [max: 509, avg: 20, flu: 21, avg_flu: 13], ran for 29 ms
out 6 ms [max: 509, avg: 20, flu: 3, avg_flu: 13], ran for 17 ms
out 5 ms [max: 509, avg: 20, flu: 0, avg_flu: 13], ran for 28 ms
out 2 ms [max: 509, avg: 20, flu: 3, avg_flu: 13], ran for 34 ms
-Mike
next prev parent reply other threads:[~2008-02-28 16:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-25 12:22 [PATCH] sched: revert load_balance_monitor() Peter Zijlstra
2008-02-25 14:29 ` Mike Galbraith
2008-02-25 14:35 ` Dhaval Giani
2008-02-25 14:37 ` Mike Galbraith
2008-02-28 13:26 ` Ingo Molnar
2008-02-28 16:13 ` Mike Galbraith [this message]
2008-02-29 7:11 ` Mike Galbraith
2008-02-25 15:28 ` Peter Zijlstra
2008-02-25 15:53 ` Heiko Carstens
2008-02-25 16:01 ` Srivatsa Vaddagiri
2008-02-25 16:34 ` Peter Zijlstra
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