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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
