Message-ID: <51BF297B.7090409@intel.com>
Date: Mon, 17 Jun 2013 23:21:31 +0800
From: Alex Shi <alex.shi@intel.com>
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To: Paul Turner <pjt@google.com>
CC: Ingo Molnar <mingo@redhat.com>, Peter Zijlstra <peterz@infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>,
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        Morten Rasmussen <morten.rasmussen@arm.com>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Preeti U Murthy <preeti@linux.vnet.ibm.com>,
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        =?ISO-8859-1?Q?Fr=E9d=E9ric_Weisbecker?= <fweisbec@gmail.com>
Subject: Re: [patch v8 6/9] sched: compute runnable load avg in cpu_load and
 cpu_avg_load_per_task
References: <1370589652-24549-1-git-send-email-alex.shi@intel.com> <1370589652-24549-7-git-send-email-alex.shi@intel.com> <CAPM31RKwNUh+nNcsEftD4pyP+gdwXhRK7wCRNWa8Y0sE0hf-DQ@mail.gmail.com> <51BF23E9.5090906@intel.com>
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On 06/17/2013 10:57 PM, Alex Shi wrote:
>> > 
>> > Did you try including blocked_load_avg in only get_rq_runnable_load()
>> > [ and not weighted_cpuload() which is called by new-idle ]?
>> > 
> No, but blocked_load_avg also impact periodic balance much. The ideal
> scenario is a sleeping task will be waken up on same cpu. But like
> kbuild benchmark, the quick cc/ld task are forked, and then finished and

a bit more explain, cc/ld finished cpu task then wait IO to write object
files into disk.
> disappeared quickly. blocked_load_avg cause trouble in kbuild.


-- 
Thanks
    Alex
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