Messages in this thread | | | From | Joel Fernandes <> | Date | Tue, 13 Mar 2018 18:27:53 -0700 | Subject | Re: [PATCH v4] cpufreq: schedutil: rate limits for SCHED_DEADLINE |
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On Tue, Mar 13, 2018 at 4:15 AM, Viresh Kumar <viresh.kumar@linaro.org> wrote: > On 13-03-18, 11:35, Claudio Scordino wrote: >> When the SCHED_DEADLINE scheduling class increases the CPU utilization, >> we should not wait for the rate limit, otherwise we may miss some >> deadline. >> >> Tests using rt-app on Exynos5422 with up to 10 SCHED_DEADLINE tasks have >> shown reductions of even 10% of deadline misses with a negligible >> increase of energy consumption (measured through Baylibre Cape). >> >> Signed-off-by: Claudio Scordino <claudio@evidence.eu.com> >> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> >> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> >> CC: Rafael J. Wysocki <rafael.j.wysocki@intel.com> >> CC: Viresh Kumar <viresh.kumar@linaro.org> >> CC: Patrick Bellasi <patrick.bellasi@arm.com> >> CC: Dietmar Eggemann <dietmar.eggemann@arm.com> >> CC: Morten Rasmussen <morten.rasmussen@arm.com> >> CC: Juri Lelli <juri.lelli@redhat.com> >> CC: Vincent Guittot <vincent.guittot@linaro.org> >> CC: Todd Kjos <tkjos@android.com> >> CC: Joel Fernandes <joelaf@google.com> >> CC: linux-pm@vger.kernel.org >> CC: linux-kernel@vger.kernel.org >> --- >> Changes from v3: >> - Specific routine renamed as ignore_dl_rate_limit() > > LGTM. Thanks.
Nice! Thanks.
- Joel
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