Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH] cpufreq: governor: Be friendly towards latency-sensitive bursty workloads | Date | Tue, 27 May 2014 01:27:54 +0200 |
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Hi Srivatsa,
On Tuesday, May 27, 2014 02:23:38 AM Srivatsa S. Bhat wrote: > Cpufreq governors like the ondemand governor calculate the load on the CPU > periodically by employing deferrable timers. A deferrable timer won't fire > if the CPU is completely idle (and there are no other timers to be run), in > order to avoid unnecessary wakeups and thus save CPU power. > > However, the load calculation logic is agnostic to all this, and this can > lead to the problem described below.
This is subtle enough that I need some more time to chew on it, but since the merge window is coming, I'm not sure when that's going to happen honestly.
Rafael
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