Messages in this thread | | | Date | Thu, 19 Feb 2015 12:49:40 +0000 | From | Morten Rasmussen <> | Subject | Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage |
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On Thu, Jan 15, 2015 at 10:09:20AM +0000, Vincent Guittot wrote: > This patchset consolidates several changes in the capacity and the usage > tracking of the CPU. It provides a frequency invariant metric of the usage of > CPUs and generally improves the accuracy of load/usage tracking in the > scheduler. The frequency invariant metric is the foundation required for the > consolidation of cpufreq and implementation of a fully invariant load tracking. > These are currently WIP and require several changes to the load balancer > (including how it will use and interprets load and capacity metrics) and > extensive validation. The frequency invariance is done with > arch_scale_freq_capacity and this patchset doesn't provide the backends of > the function which are architecture dependent. > > As discussed at LPC14, Morten and I have consolidated our changes into a single > patchset to make it easier to review and merge.
I'm happy with patch 1, 3, 5, 6, and 7. Add my acked-by if you like :)
The last few needs buy-in from somebody running SMT systems I think.
Also, it still not clear why patch 10 uses relative capacity reduction instead of absolute capacity available to CFS tasks.
Morten
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