From: Mike Galbraith <umgwanakikbuti@gmail.com>
To: Yuyang Du <yuyang.du@intel.com>
Cc: mingo@redhat.com, peterz@infradead.org,
linux-kernel@vger.kernel.org, pjt@google.com, bsegall@google.com,
arjan.van.de.ven@intel.com, len.brown@intel.com,
rafael.j.wysocki@intel.com, alan.cox@intel.com,
mark.gross@intel.com, fengguang.wu@intel.com
Subject: Re: [PATCH 0/2 v4] sched: Rewrite per entity runnable load average tracking
Date: Mon, 28 Jul 2014 09:49:18 +0200 [thread overview]
Message-ID: <1406533758.5133.238.camel@marge.simpson.net> (raw)
In-Reply-To: <20140727193453.GA23367@intel.com>
On Mon, 2014-07-28 at 03:34 +0800, Yuyang Du wrote:
> Thanks a lot, Mike.
>
> Ben asked for this test, but actually I don't know how to get pipe-test, still
> not even after google it.
You could write it trivially, it's just pipe ping-pong. I can send you
a copy of the one I use if you like. Ingo wrote it way back in the dark
ages, I use it to watch out for fastpath lard accumulation.
> So the result is flat compared to before or a pass?
Yeah, my little box said it was a deep cgroup price noop, but a modest
win for root. I love minus signs, they work great, though sometimes in
highly mysterious ways :)
-Mike
next prev parent reply other threads:[~2014-07-28 7:49 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-17 23:26 [PATCH 0/2 v4] sched: Rewrite per entity runnable load average tracking Yuyang Du
2014-07-17 23:26 ` [PATCH 1/2 v4] sched: Remove update_rq_runnable_avg Yuyang Du
2014-07-17 23:26 ` [PATCH 2/2 v4] sched: Rewrite per entity runnable load average tracking Yuyang Du
2014-07-18 9:43 ` Vincent Guittot
2014-07-27 17:36 ` Yuyang Du
2014-07-29 9:12 ` Vincent Guittot
2014-07-29 1:43 ` Yuyang Du
2014-07-29 13:17 ` Vincent Guittot
2014-07-29 22:27 ` Yuyang Du
2014-07-30 8:30 ` Peter Zijlstra
2014-07-30 0:40 ` Yuyang Du
2014-07-29 9:39 ` Peter Zijlstra
2014-07-29 1:53 ` Yuyang Du
2014-07-29 13:35 ` Peter Zijlstra
2014-07-29 15:55 ` Peter Zijlstra
2014-07-29 23:08 ` Yuyang Du
2014-07-31 9:40 ` Vincent Guittot
2014-07-31 9:56 ` [PATCH 2/2 v4] sched: Rewrite per entity runnable load average Vincent Guittot
2014-07-31 19:16 ` Yuyang Du
2014-08-01 9:28 ` Vincent Guittot
2014-07-28 10:48 ` [PATCH 2/2 v4] sched: Rewrite per entity runnable load average tracking Peter Zijlstra
2014-07-29 0:56 ` Yuyang Du
2014-07-29 13:15 ` Peter Zijlstra
2014-07-28 11:39 ` Peter Zijlstra
2014-07-29 1:09 ` Yuyang Du
2014-07-29 13:19 ` Peter Zijlstra
2014-07-28 12:01 ` Peter Zijlstra
2014-07-28 13:51 ` Peter Zijlstra
2014-07-28 16:58 ` bsegall
2014-07-28 17:19 ` Peter Zijlstra
2014-07-29 1:13 ` Yuyang Du
2014-07-18 15:39 ` [PATCH 0/2 " Morten Rasmussen
2014-07-27 19:02 ` Yuyang Du
2014-07-28 10:38 ` Peter Zijlstra
2014-07-29 1:17 ` Yuyang Du
2014-07-29 13:06 ` Peter Zijlstra
2014-07-30 10:13 ` Morten Rasmussen
2014-07-30 10:21 ` Peter Zijlstra
2014-07-30 10:57 ` Morten Rasmussen
2014-07-30 19:17 ` Yuyang Du
2014-07-31 8:54 ` Morten Rasmussen
2014-07-31 2:15 ` Yuyang Du
2014-07-20 5:46 ` Mike Galbraith
2014-07-27 19:34 ` Yuyang Du
2014-07-28 7:49 ` Mike Galbraith [this message]
2014-07-28 0:01 ` Yuyang Du
2014-07-28 8:55 ` Peter Zijlstra
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