Messages in this thread | | | From | Vincent Guittot <> | Date | Mon, 3 Nov 2014 17:14:15 +0100 | Subject | Re: [PATCH v8 10/10] sched: make scale_rt invariant with frequency |
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On 3 November 2014 16:51, Peter Zijlstra <peterz@infradead.org> wrote: > On Fri, Oct 31, 2014 at 09:47:32AM +0100, Vincent Guittot wrote: >> The call to arch_scale_frequency_capacity in the rt scheduling path might be >> a concern for RT folks because I'm not sure whether we can rely on >> arch_scale_freq_capacity to be short and efficient ? > > Well, you put it in quite a hot path on the CFS side too, so it had > better be blazing fast anyhow. > > > That said, can you move all the running + invariance bits at the > beginning of the patch set, these appear to be the least controversial > bits and 'desired' by quite a few people, so we'll try and get those > agreed upon and merged first.
ok
I'm going to resend with the following order
sched: add utilization_avg_contrib sched: Track group sched_entity usage contributions sched: remove frequency scaling from cpu_capacity sched: Make sched entity usage tracking scale-invariant sched: make scale_rt invariant with frequency sched: add per rq cpu_capacity_orig sched: get CPU's usage statistic sched: replace capacity_factor by usage sched: add SD_PREFER_SIBLING for SMT level sched: move cfs task on a CPU with higher capacity
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