From: Peter Zijlstra <peterz@infradead.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Turner <pjt@google.com>, Alex Shi <alex.shi@intel.com>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Arjan van de Ven <arjan@linux.intel.com>,
Borislav Petkov <bp@alien8.de>,
Namhyung Kim <namhyung@kernel.org>,
Mike Galbraith <efault@gmx.de>,
Morten Rasmussen <morten.rasmussen@arm.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Preeti U Murthy <preeti@linux.vnet.ibm.com>,
Viresh Kumar <viresh.kumar@linaro.org>,
LKML <linux-kernel@vger.kernel.org>,
Len Brown <len.brown@intel.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Jiri Kosina <jkosina@suse.cz>,
Clark Williams <clark.williams@gmail.com>,
"tony.luck@intel.com" <tony.luck@intel.com>,
Kees Cook <keescook@chromium.org>, Mel Gorman <mgorman@suse.de>,
Rik van Riel <riel@redhat.com>
Subject: Re: [Resend patch v8 0/13] use runnable load in schedule balance
Date: Mon, 28 Oct 2013 13:22:31 +0100 [thread overview]
Message-ID: <20131028122231.GM19466@laptop.lan> (raw)
In-Reply-To: <CAFTL4hxSfWOb_DVryjGY4hgsaoBFi7zfbKuJC6eMk4+4nQOf-Q@mail.gmail.com>
On Mon, Oct 28, 2013 at 11:25:34AM +0100, Frederic Weisbecker wrote:
> 2013/6/28 Peter Zijlstra <peterz@infradead.org>:
> > On Fri, Jun 28, 2013 at 03:56:25AM -0700, Paul Turner wrote:
> >
> >> So this is actually an interesting idea, but don't think of it as
> >> overweight. What "cfs_rq->blocked_load_avg / 2" means is actually
> >> blocked_load_avg one period from now. This is interesting because it
> >> makes the (reasonable) supposition that blocked load is not about to
> >> immediately wake, but will continue to decay.
> >>
> >> Could you try testing the gvr_lb_tip branch at
> >> git://git.kernel.org/pub/scm/linux/kernel/git/pjt/sched-tip.git ?
> >>
> >> It's an extension to your series that tries to improve some of the
> >> cpu_load interactions in an alternate way to the above.
> >>
> >> It seems a little better on one and two-socket machines; but we
> >> couldn't reproduce/compare to your best performance results since they
> >> were taken on larger machines.
> >
> > Oh nice.. it does away with the entire cpu_load[] array thing. Just what
> > Frederic needs for his NOHZ stuff as well -- he's currently abusing
> > LB_BIAS for that.
>
> Hi guys,
>
> Is there any updates on the status of this work? I'm getting back on
> fixing the cpu_load for full dynticks and this patchset was apparently
> taking care of that.
I talked to PJT about this last week, he said Ben was looking (or going
to look into) this sometime 'soon' iirc.
next prev parent reply other threads:[~2013-10-28 12:22 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-20 2:18 [Resend patch v8 0/13] use runnable load in schedule balance Alex Shi
2013-06-20 2:18 ` [Resend patch v8 01/13] Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" Alex Shi
2013-06-26 5:05 ` Alex Shi
2013-06-26 20:30 ` Ingo Molnar
2013-06-27 1:07 ` Alex Shi
2013-06-27 9:01 ` [tip:sched/core] " tip-bot for Alex Shi
2013-06-20 2:18 ` [Resend patch v8 02/13] sched: move few runnable tg variables into CONFIG_SMP Alex Shi
2013-06-27 9:01 ` [tip:sched/core] sched: Move a " tip-bot for Alex Shi
2013-06-20 2:18 ` [Resend patch v8 03/13] sched: set initial value of runnable avg for new forked task Alex Shi
2013-06-27 9:01 ` [tip:sched/core] sched: Set an " tip-bot for Alex Shi
2013-06-20 2:18 ` [Resend patch v8 04/13] sched: fix slept time double counting in enqueue entity Alex Shi
2013-06-27 9:01 ` [tip:sched/core] sched: Fix sleep time double accounting " tip-bot for Alex Shi
2013-06-20 2:18 ` [Resend patch v8 05/13] sched: update cpu load after task_tick Alex Shi
2013-06-27 9:02 ` [tip:sched/core] sched: Update " tip-bot for Alex Shi
2013-06-20 2:18 ` [Resend patch v8 06/13] sched: compute runnable load avg in cpu_load and cpu_avg_load_per_task Alex Shi
2013-06-20 13:29 ` Vincent Guittot
2013-06-24 9:06 ` Alex Shi
2013-06-24 10:54 ` Paul Turner
2013-06-24 11:04 ` Vincent Guittot
2013-06-24 11:06 ` Paul Turner
2013-06-24 14:56 ` Alex Shi
2013-06-27 9:02 ` [tip:sched/core] sched: Compute " tip-bot for Alex Shi
2013-06-27 13:30 ` [Resend patch v8 06/13] sched: compute " Alex Shi
2013-06-20 2:18 ` [Resend patch v8 07/13] sched: consider runnable load average in move_tasks Alex Shi
2013-06-27 9:02 ` [tip:sched/core] sched: Consider runnable load average in move_tasks() tip-bot for Alex Shi
2013-06-20 2:18 ` [Resend patch v8 08/13] sched/tg: remove blocked_load_avg in balance Alex Shi
2013-06-20 2:18 ` [Resend patch v8 09/13] sched: change cfs_rq load avg to unsigned long Alex Shi
2013-06-27 9:02 ` [tip:sched/core] sched: Change " tip-bot for Alex Shi
2013-06-20 2:18 ` [Resend patch v8 10/13] sched/tg: use 'unsigned long' for load variable in task group Alex Shi
2013-06-27 9:02 ` [tip:sched/core] sched/tg: Use " tip-bot for Alex Shi
2013-06-20 2:18 ` [Resend patch v8 11/13] sched/cfs_rq: change atomic64_t removed_load to atomic_long_t Alex Shi
2013-06-27 9:02 ` [tip:sched/core] sched/cfs_rq: Change " tip-bot for Alex Shi
2013-06-20 2:18 ` [Resend patch v8 12/13] sched/tg: remove tg.load_weight Alex Shi
2013-06-27 9:02 ` [tip:sched/core] sched/tg: Remove tg.load_weight tip-bot for Alex Shi
2013-06-20 2:18 ` [Resend patch v8 13/13] sched: get_rq_runnable_load() can be static and inline Alex Shi
2013-06-27 9:03 ` [tip:sched/core] sched: Change get_rq_runnable_load() to " tip-bot for Alex Shi
2013-06-24 3:15 ` [Resend patch v8 0/13] use runnable load in schedule balance Alex Shi
2013-06-24 10:40 ` Paul Turner
2013-06-24 15:37 ` Alex Shi
2013-06-25 13:13 ` Alex Shi
2013-06-28 10:56 ` Paul Turner
2013-06-28 11:07 ` Peter Zijlstra
2013-06-28 11:12 ` Alex Shi
2013-10-28 10:25 ` Frederic Weisbecker
2013-10-28 12:22 ` Peter Zijlstra [this message]
[not found] ` <CAGjg+kGUo8vqv6hzobuyNoQjipLBXXofZ5q1rUyEehbD3cba9A@mail.gmail.com>
2013-06-28 16:00 ` Paul Turner
2013-07-09 8:53 ` Alex Shi
2013-06-26 14:27 ` Peter Zijlstra
2013-06-26 15:23 ` Alex Shi
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