From: Alex Shi <alex.shi@intel.com>
To: Michael Wang <wangyun@linux.vnet.ibm.com>
Cc: mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de,
akpm@linux-foundation.org, arjan@linux.intel.com, bp@alien8.de,
pjt@google.com, namhyung@kernel.org, efault@gmx.de,
morten.rasmussen@arm.com, vincent.guittot@linaro.org,
gregkh@linuxfoundation.org, preeti@linux.vnet.ibm.com,
viresh.kumar@linaro.org, linux-kernel@vger.kernel.org,
len.brown@intel.com, rafael.j.wysocki@intel.com, jkosina@suse.cz,
clark.williams@gmail.com, tony.luck@intel.com,
keescook@chromium.org, mgorman@suse.de, riel@redhat.com
Subject: Re: [patch v3 0/8] sched: use runnable avg in load balance
Date: Wed, 03 Apr 2013 15:28:27 +0800 [thread overview]
Message-ID: <515BDA1B.2040801@intel.com> (raw)
In-Reply-To: <515BD7DB.6020602@linux.vnet.ibm.com>
On 04/03/2013 03:18 PM, Michael Wang wrote:
>> > the following patch include the renamed knob, and you can tune it under
>> > /proc/sys/kernel/... to see detailed impact degree.
> Could I make the conclusion that the improvement on pgbench was caused
> by the new weighted_cpuload()?
guess too.
>
> The burst branch seems to just adopt the load in old world, if reduce
> the rate to enter that branch could regain the benefit, then I could
> confirm my supposition.
>
>> >
>> > + if (cpu_rq(this_cpu)->avg_idle < sysctl_sched_migration_cost ||
>> > + cpu_rq(prev_cpu)->avg_idle < sysctl_sched_migration_cost)
> It should be 'sysctl_sched_burst_threshold' here, isn't it? anyway, I
> will take a try with different rate.
Ops, sth wrong in my git operation.
--
Thanks Alex
next prev parent reply other threads:[~2013-04-03 7:28 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-02 3:23 [patch v3 0/8] sched: use runnable avg in load balance Alex Shi
2013-04-02 3:23 ` [patch v3 1/8] Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" Alex Shi
2013-04-02 3:23 ` [patch v3 2/8] sched: set initial value of runnable avg for new forked task Alex Shi
2013-04-02 3:23 ` [patch v3 3/8] sched: only count runnable avg on cfs_rq's nr_running Alex Shi
2013-04-03 3:19 ` Alex Shi
2013-04-02 3:23 ` [patch v3 4/8] sched: update cpu load after task_tick Alex Shi
2013-04-02 3:23 ` [patch v3 5/8] sched: compute runnable load avg in cpu_load and cpu_avg_load_per_task Alex Shi
2013-04-02 3:23 ` [patch v3 6/8] sched: consider runnable load average in move_tasks Alex Shi
2013-04-09 7:08 ` Vincent Guittot
2013-04-09 8:05 ` Alex Shi
2013-04-09 8:58 ` Vincent Guittot
2013-04-09 10:38 ` Alex Shi
2013-04-09 11:56 ` Vincent Guittot
2013-04-09 14:48 ` Alex Shi
2013-04-09 15:16 ` Vincent Guittot
2013-04-10 2:31 ` Alex Shi
2013-04-10 6:07 ` Michael Wang
2013-04-10 6:55 ` Vincent Guittot
2013-04-02 3:23 ` [patch v3 7/8] sched: consider runnable load average in effective_load Alex Shi
2013-04-02 3:23 ` [patch v3 8/8] sched: use instant load for burst wake up Alex Shi
2013-04-02 7:23 ` [patch v3 0/8] sched: use runnable avg in load balance Michael Wang
2013-04-02 8:34 ` Mike Galbraith
2013-04-02 9:13 ` Michael Wang
2013-04-02 8:35 ` Alex Shi
2013-04-02 9:45 ` Michael Wang
2013-04-03 2:46 ` Michael Wang
2013-04-03 2:56 ` Alex Shi
2013-04-03 3:23 ` Michael Wang
2013-04-03 4:28 ` Alex Shi
2013-04-03 5:38 ` Michael Wang
2013-04-03 5:53 ` Michael Wang
2013-04-03 6:01 ` Alex Shi
2013-04-03 6:22 ` Michael Wang
2013-04-03 6:53 ` Alex Shi
2013-04-03 7:18 ` Michael Wang
2013-04-03 7:28 ` Alex Shi [this message]
2013-04-03 8:46 ` Alex Shi
2013-04-03 9:37 ` Michael Wang
2013-04-03 11:17 ` Alex Shi
2013-04-07 3:09 ` Michael Wang
2013-04-07 7:30 ` Alex Shi
2013-04-07 8:56 ` Michael Wang
2013-04-09 5:08 ` Alex Shi
2013-04-10 13:12 ` Alex Shi
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