Re: [PATCH v2] cpufreq: schedutil: rate limits for SCHED_DEADLINE

2018-03-04 Thread Viresh Kumar
On 28-02-18, 12:22, Rafael J. Wysocki wrote: > On Wed, Feb 28, 2018 at 12:06 PM, 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 E

Re: [PATCH v2] cpufreq: schedutil: rate limits for SCHED_DEADLINE

2018-02-28 Thread Rafael J. Wysocki
On Wed, Feb 28, 2018 at 12:06 PM, 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 r

Re: [PATCH v2] cpufreq: schedutil: rate limits for SCHED_DEADLINE

2018-02-28 Thread Claudio Scordino
Dear Rafael, dear Viresh, Il 28/02/2018 12:06, Claudio Scordino ha scritto: 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 hav

[PATCH v2] cpufreq: schedutil: rate limits for SCHED_DEADLINE

2018-02-28 Thread Claudio Scordino
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