From: Matt Fleming <matt@codeblueprint.co.uk>
To: Chris Mason <clm@fb.com>, Mike Galbraith <mgalbraith@suse.de>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH RFC] select_idle_sibling experiments
Date: Tue, 12 Apr 2016 22:45:02 +0100 [thread overview]
Message-ID: <20160412214502.GI2829@codeblueprint.co.uk> (raw)
In-Reply-To: <20160409173034.GA85074@clm-mbp.thefacebook.com>
On Sat, 09 Apr, at 01:30:34PM, Chris Mason wrote:
>
> [ nohz throttling patch ]
>
> I tested the nohz throttle two different ways, first with schbench's
> pipe simulation, it's easily 8% faster with messages bouncing between
> cpus.
>
> In production it's hard to pick a single number because the benchmarks
> produce latency curves as the workload scales up in RPS. The benefits
> range from 2-9% depending on the metric. It's a nice win, and I'd love to
> see it go in.
Do we have any idea what the tradeoff is against power consumption for
throttling nohz?
next prev parent reply other threads:[~2016-04-12 21:45 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-05 18:08 [PATCH RFC] select_idle_sibling experiments Chris Mason
2016-04-05 18:43 ` Bastien Bastien Philbert
2016-04-05 19:28 ` Chris Mason
2016-04-05 20:03 ` Matt Fleming
2016-04-05 21:05 ` Bastien Philbert
2016-04-06 0:44 ` Chris Mason
2016-04-06 7:27 ` Mike Galbraith
2016-04-06 13:36 ` Chris Mason
2016-04-09 17:30 ` Chris Mason
2016-04-12 21:45 ` Matt Fleming [this message]
2016-04-13 3:40 ` Mike Galbraith
2016-04-13 15:54 ` Chris Mason
2016-04-28 12:00 ` Peter Zijlstra
2016-04-28 13:17 ` Mike Galbraith
2016-05-02 5:35 ` Mike Galbraith
2016-04-07 15:17 ` Chris Mason
2016-04-09 19:05 ` sched: tweak select_idle_sibling to look for idle threads Chris Mason
2016-04-10 10:04 ` Mike Galbraith
2016-04-10 12:35 ` Chris Mason
2016-04-10 12:46 ` Mike Galbraith
2016-04-10 19:55 ` Chris Mason
2016-04-11 4:54 ` Mike Galbraith
2016-04-12 0:30 ` Chris Mason
2016-04-12 4:44 ` Mike Galbraith
2016-04-12 13:27 ` Chris Mason
2016-04-12 18:16 ` Mike Galbraith
2016-04-12 20:07 ` Chris Mason
2016-04-13 3:18 ` Mike Galbraith
2016-04-13 13:44 ` Chris Mason
2016-04-13 14:22 ` Mike Galbraith
2016-04-13 14:36 ` Chris Mason
2016-04-13 15:05 ` Mike Galbraith
2016-04-13 15:34 ` Mike Galbraith
2016-04-30 12:47 ` Peter Zijlstra
2016-05-01 7:12 ` Mike Galbraith
2016-05-01 8:53 ` Peter Zijlstra
2016-05-01 9:20 ` Mike Galbraith
2016-05-07 1:24 ` Yuyang Du
2016-05-08 8:08 ` Mike Galbraith
2016-05-08 18:57 ` Yuyang Du
2016-05-09 3:45 ` Mike Galbraith
2016-05-08 20:22 ` Yuyang Du
2016-05-09 7:44 ` Mike Galbraith
2016-05-09 1:13 ` Yuyang Du
2016-05-09 9:39 ` Mike Galbraith
2016-05-09 23:26 ` Yuyang Du
2016-05-10 7:49 ` Mike Galbraith
2016-05-10 15:26 ` Mike Galbraith
2016-05-10 19:16 ` Yuyang Du
2016-05-11 4:17 ` Mike Galbraith
2016-05-11 1:23 ` Yuyang Du
2016-05-11 9:56 ` Mike Galbraith
2016-05-18 6:41 ` Mike Galbraith
2016-05-09 3:52 ` Mike Galbraith
2016-05-08 20:31 ` Yuyang Du
2016-05-02 8:46 ` Peter Zijlstra
2016-05-02 14:50 ` Mike Galbraith
2016-05-02 14:58 ` Peter Zijlstra
2016-05-02 15:47 ` Chris Mason
2016-05-03 14:32 ` Peter Zijlstra
2016-05-03 15:11 ` Chris Mason
2016-05-04 10:37 ` Peter Zijlstra
2016-05-04 15:31 ` Peter Zijlstra
2016-05-05 22:03 ` Matt Fleming
2016-05-06 18:54 ` Mike Galbraith
2016-05-09 8:33 ` Peter Zijlstra
2016-05-09 8:56 ` Mike Galbraith
2016-05-04 15:45 ` Peter Zijlstra
2016-05-04 17:46 ` Chris Mason
2016-05-05 9:33 ` Peter Zijlstra
2016-05-05 13:58 ` Chris Mason
2016-05-06 7:12 ` Peter Zijlstra
2016-05-06 17:27 ` Chris Mason
2016-05-06 7:25 ` Peter Zijlstra
2016-05-02 17:30 ` Mike Galbraith
2016-05-02 15:01 ` Peter Zijlstra
2016-05-02 16:04 ` Ingo Molnar
2016-05-03 11:31 ` Peter Zijlstra
2016-05-03 18:22 ` Peter Zijlstra
2016-05-02 15:10 ` Peter Zijlstra
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