From: Yuyang Du <yuyang.du@intel.com>
To: Boqun Feng <boqun.feng@gmail.com>
Cc: mingo@kernel.org, peterz@infradead.org,
linux-kernel@vger.kernel.org, pjt@google.com, bsegall@google.com,
morten.rasmussen@arm.com, vincent.guittot@linaro.org,
dietmar.eggemann@arm.com, umgwanakikbuti@gmail.com,
len.brown@intel.com, rafael.j.wysocki@intel.com,
arjan@linux.intel.com, fengguang.wu@intel.com
Subject: Re: [PATCH v10 6/7] sched: Provide runnable_load_avg back to cfs_rq
Date: Mon, 27 Jul 2015 02:43:25 +0800 [thread overview]
Message-ID: <20150726184325.GB28512@intel.com> (raw)
In-Reply-To: <20150721102956.GA5380@fixme-laptop.cn.ibm.com>
Hi Boqun,
On Tue, Jul 21, 2015 at 06:29:56PM +0800, Boqun Feng wrote:
> The point is that you have already tracked the sum of runnable_load_avg
> and blocked_load_avg in cfs_rq->avg.load_avg. If you're going to track
> part of the sum, you'd better track the one that's updated less
> frequently, right?
>
> Anyway, this idea just comes into my mind. I wonder which is udpated
> less frequently myself too. ;-) So I ask to see whether there is
> something we can improve.
Actually, this is not the point.
1) blocked load is more "difficult" to track, hint, migrate.
2) r(t1) - b(t2) is not anything, hint, t1 != t2
next prev parent reply other threads:[~2015-07-27 2:34 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-15 0:04 [PATCH v10 0/7] sched: Rewrite runnable load and utilization average tracking Yuyang Du
2015-07-15 0:04 ` [PATCH v10 1/7] sched: Remove rq's runnable avg Yuyang Du
2015-08-03 17:10 ` [tip:sched/core] sched/fair: " tip-bot for Yuyang Du
2015-07-15 0:04 ` [PATCH v10 2/7] sched: Rewrite runnable load and utilization average tracking Yuyang Du
2015-07-24 16:41 ` Dietmar Eggemann
2015-07-26 20:24 ` Yuyang Du
2015-08-03 17:10 ` [tip:sched/core] sched/fair: " tip-bot for Yuyang Du
2015-07-15 0:04 ` [PATCH v10 3/7] sched: Implement update_blocked_averages() for CONFIG_FAIR_GROUP_SCHED=n Yuyang Du
2015-08-03 17:11 ` [tip:sched/core] sched/fair: " tip-bot for Vincent Guittot
2015-07-15 0:04 ` [PATCH v10 4/7] sched: Init cfs_rq's sched_entity load average Yuyang Du
2015-08-03 17:11 ` [tip:sched/core] sched/fair: Init cfs_rq' s " tip-bot for Yuyang Du
2015-07-15 0:04 ` [PATCH v10 5/7] sched: Remove task and group entity load when they are dead Yuyang Du
2015-08-03 17:11 ` [tip:sched/core] sched/fair: " tip-bot for Yuyang Du
2015-07-15 0:04 ` [PATCH v10 6/7] sched: Provide runnable_load_avg back to cfs_rq Yuyang Du
2015-07-21 1:08 ` Boqun Feng
2015-07-21 0:44 ` Yuyang Du
2015-07-21 10:18 ` Boqun Feng
2015-07-21 10:29 ` Boqun Feng
2015-07-26 18:43 ` Yuyang Du [this message]
2015-07-27 3:21 ` Boqun Feng
2015-07-26 19:56 ` Yuyang Du
2015-07-27 4:04 ` Boqun Feng
2015-07-26 20:34 ` Yuyang Du
2015-07-27 5:16 ` Boqun Feng
2015-07-27 3:29 ` Boqun Feng
2015-07-22 2:19 ` Boqun Feng
2015-07-26 19:45 ` Yuyang Du
2015-08-03 17:12 ` [tip:sched/core] sched/fair: " tip-bot for Yuyang Du
2015-07-15 0:04 ` [PATCH v10 7/7] sched: Clean up load average references Yuyang Du
2015-07-24 16:41 ` Dietmar Eggemann
2015-07-26 20:31 ` Yuyang Du
2015-08-03 17:12 ` [tip:sched/core] sched/fair: " tip-bot for Yuyang Du
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