Re: [PATCH 0/4] scheduler-based cpu frequency scaling
On Mon, May 4, 2015 at 4:27 PM, Rafael J. Wysocki wrote: > On Monday, May 04, 2015 03:10:37 PM Michael Turquette wrote: >> This series implements an event-driven cpufreq governor that scales cpu >> frequency as a function of cfs runqueue utilization. The intent of this RFC >> is >> to get some discussion going about how the scheduler can become the policy >> engine for selecting cpu frequency, what limitations exist and what design do >> we want to take to get to a solution. >> >> This work is a different take on the patches I posted in November: >> http://lkml.kernel.org/r/<1413958051-7103-1-git-send-email-mturque...@linaro.org> >> >> This series depends on having frequency-invariant representations for load. >> This requires Vincent's recently merged cpu capacity rework patches, as well >> as >> a new patch from Morten included here. Morten's patch will likely make an >> appearance in his energy aware scheduling v4 series. >> >> Thanks to Juri Lelli for contributing to the development >> of the governor. >> >> A git branch with these patches can be pulled from here: >> https://git.linaro.org/people/mike.turquette/linux.git sched-freq >> >> Smoke testing has been done on an OMAP4 Pandaboard and an Exynos 5800 >> Chromebook2. Extensive benchmarking and regression testing has not yet been >> done. Before sinking too much time into extensive testing I'd like to get >> feedback on the general design. >> >> Michael Turquette (3): >> sched: sched feature for cpu frequency selection >> sched: export get_cpu_usage & capacity_orig_of >> sched: cpufreq_sched_cfs: PELT-based cpu frequency scaling >> >> Morten Rasmussen (1): >> arm: Frequency invariant scheduler load-tracking support >> >> arch/arm/include/asm/topology.h | 7 + >> arch/arm/kernel/smp.c | 53 ++- >> arch/arm/kernel/topology.c | 17 +++ >> drivers/cpufreq/Kconfig | 24 >> include/linux/cpufreq.h | 3 + >> kernel/sched/Makefile | 1 + >> kernel/sched/cpufreq_cfs.c | 311 >> >> kernel/sched/fair.c | 48 +++ >> kernel/sched/features.h | 6 + >> kernel/sched/sched.h| 39 + >> 10 files changed, 475 insertions(+), 34 deletions(-) >> create mode 100644 kernel/sched/cpufreq_cfs.c > > Can you *please* always CC PM-related patches to linux-pm? Will do. Apologies for the oversight. Regards, Mike > > > -- > I speak only for myself. > Rafael J. Wysocki, Intel Open Source Technology Center. -- 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/
Re: [PATCH 0/4] scheduler-based cpu frequency scaling
On Mon, May 4, 2015 at 4:27 PM, Rafael J. Wysocki r...@rjwysocki.net wrote: On Monday, May 04, 2015 03:10:37 PM Michael Turquette wrote: This series implements an event-driven cpufreq governor that scales cpu frequency as a function of cfs runqueue utilization. The intent of this RFC is to get some discussion going about how the scheduler can become the policy engine for selecting cpu frequency, what limitations exist and what design do we want to take to get to a solution. This work is a different take on the patches I posted in November: http://lkml.kernel.org/r/1413958051-7103-1-git-send-email-mturque...@linaro.org This series depends on having frequency-invariant representations for load. This requires Vincent's recently merged cpu capacity rework patches, as well as a new patch from Morten included here. Morten's patch will likely make an appearance in his energy aware scheduling v4 series. Thanks to Juri Lelli juri.le...@arm.com for contributing to the development of the governor. A git branch with these patches can be pulled from here: https://git.linaro.org/people/mike.turquette/linux.git sched-freq Smoke testing has been done on an OMAP4 Pandaboard and an Exynos 5800 Chromebook2. Extensive benchmarking and regression testing has not yet been done. Before sinking too much time into extensive testing I'd like to get feedback on the general design. Michael Turquette (3): sched: sched feature for cpu frequency selection sched: export get_cpu_usage capacity_orig_of sched: cpufreq_sched_cfs: PELT-based cpu frequency scaling Morten Rasmussen (1): arm: Frequency invariant scheduler load-tracking support arch/arm/include/asm/topology.h | 7 + arch/arm/kernel/smp.c | 53 ++- arch/arm/kernel/topology.c | 17 +++ drivers/cpufreq/Kconfig | 24 include/linux/cpufreq.h | 3 + kernel/sched/Makefile | 1 + kernel/sched/cpufreq_cfs.c | 311 kernel/sched/fair.c | 48 +++ kernel/sched/features.h | 6 + kernel/sched/sched.h| 39 + 10 files changed, 475 insertions(+), 34 deletions(-) create mode 100644 kernel/sched/cpufreq_cfs.c Can you *please* always CC PM-related patches to linux-pm? Will do. Apologies for the oversight. Regards, Mike -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- 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/
Re: [PATCH 0/4] scheduler-based cpu frequency scaling
On Monday, May 04, 2015 03:10:37 PM Michael Turquette wrote: > This series implements an event-driven cpufreq governor that scales cpu > frequency as a function of cfs runqueue utilization. The intent of this RFC is > to get some discussion going about how the scheduler can become the policy > engine for selecting cpu frequency, what limitations exist and what design do > we want to take to get to a solution. > > This work is a different take on the patches I posted in November: > http://lkml.kernel.org/r/<1413958051-7103-1-git-send-email-mturque...@linaro.org> > > This series depends on having frequency-invariant representations for load. > This requires Vincent's recently merged cpu capacity rework patches, as well > as > a new patch from Morten included here. Morten's patch will likely make an > appearance in his energy aware scheduling v4 series. > > Thanks to Juri Lelli for contributing to the development > of the governor. > > A git branch with these patches can be pulled from here: > https://git.linaro.org/people/mike.turquette/linux.git sched-freq > > Smoke testing has been done on an OMAP4 Pandaboard and an Exynos 5800 > Chromebook2. Extensive benchmarking and regression testing has not yet been > done. Before sinking too much time into extensive testing I'd like to get > feedback on the general design. > > Michael Turquette (3): > sched: sched feature for cpu frequency selection > sched: export get_cpu_usage & capacity_orig_of > sched: cpufreq_sched_cfs: PELT-based cpu frequency scaling > > Morten Rasmussen (1): > arm: Frequency invariant scheduler load-tracking support > > arch/arm/include/asm/topology.h | 7 + > arch/arm/kernel/smp.c | 53 ++- > arch/arm/kernel/topology.c | 17 +++ > drivers/cpufreq/Kconfig | 24 > include/linux/cpufreq.h | 3 + > kernel/sched/Makefile | 1 + > kernel/sched/cpufreq_cfs.c | 311 > > kernel/sched/fair.c | 48 +++ > kernel/sched/features.h | 6 + > kernel/sched/sched.h| 39 + > 10 files changed, 475 insertions(+), 34 deletions(-) > create mode 100644 kernel/sched/cpufreq_cfs.c Can you *please* always CC PM-related patches to linux-pm? -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- 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/
[PATCH 0/4] scheduler-based cpu frequency scaling
This series implements an event-driven cpufreq governor that scales cpu frequency as a function of cfs runqueue utilization. The intent of this RFC is to get some discussion going about how the scheduler can become the policy engine for selecting cpu frequency, what limitations exist and what design do we want to take to get to a solution. This work is a different take on the patches I posted in November: http://lkml.kernel.org/r/<1413958051-7103-1-git-send-email-mturque...@linaro.org> This series depends on having frequency-invariant representations for load. This requires Vincent's recently merged cpu capacity rework patches, as well as a new patch from Morten included here. Morten's patch will likely make an appearance in his energy aware scheduling v4 series. Thanks to Juri Lelli for contributing to the development of the governor. A git branch with these patches can be pulled from here: https://git.linaro.org/people/mike.turquette/linux.git sched-freq Smoke testing has been done on an OMAP4 Pandaboard and an Exynos 5800 Chromebook2. Extensive benchmarking and regression testing has not yet been done. Before sinking too much time into extensive testing I'd like to get feedback on the general design. Michael Turquette (3): sched: sched feature for cpu frequency selection sched: export get_cpu_usage & capacity_orig_of sched: cpufreq_sched_cfs: PELT-based cpu frequency scaling Morten Rasmussen (1): arm: Frequency invariant scheduler load-tracking support arch/arm/include/asm/topology.h | 7 + arch/arm/kernel/smp.c | 53 ++- arch/arm/kernel/topology.c | 17 +++ drivers/cpufreq/Kconfig | 24 include/linux/cpufreq.h | 3 + kernel/sched/Makefile | 1 + kernel/sched/cpufreq_cfs.c | 311 kernel/sched/fair.c | 48 +++ kernel/sched/features.h | 6 + kernel/sched/sched.h| 39 + 10 files changed, 475 insertions(+), 34 deletions(-) create mode 100644 kernel/sched/cpufreq_cfs.c -- 1.9.1 -- 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/
Re: [PATCH 0/4] scheduler-based cpu frequency scaling
On Monday, May 04, 2015 03:10:37 PM Michael Turquette wrote: This series implements an event-driven cpufreq governor that scales cpu frequency as a function of cfs runqueue utilization. The intent of this RFC is to get some discussion going about how the scheduler can become the policy engine for selecting cpu frequency, what limitations exist and what design do we want to take to get to a solution. This work is a different take on the patches I posted in November: http://lkml.kernel.org/r/1413958051-7103-1-git-send-email-mturque...@linaro.org This series depends on having frequency-invariant representations for load. This requires Vincent's recently merged cpu capacity rework patches, as well as a new patch from Morten included here. Morten's patch will likely make an appearance in his energy aware scheduling v4 series. Thanks to Juri Lelli juri.le...@arm.com for contributing to the development of the governor. A git branch with these patches can be pulled from here: https://git.linaro.org/people/mike.turquette/linux.git sched-freq Smoke testing has been done on an OMAP4 Pandaboard and an Exynos 5800 Chromebook2. Extensive benchmarking and regression testing has not yet been done. Before sinking too much time into extensive testing I'd like to get feedback on the general design. Michael Turquette (3): sched: sched feature for cpu frequency selection sched: export get_cpu_usage capacity_orig_of sched: cpufreq_sched_cfs: PELT-based cpu frequency scaling Morten Rasmussen (1): arm: Frequency invariant scheduler load-tracking support arch/arm/include/asm/topology.h | 7 + arch/arm/kernel/smp.c | 53 ++- arch/arm/kernel/topology.c | 17 +++ drivers/cpufreq/Kconfig | 24 include/linux/cpufreq.h | 3 + kernel/sched/Makefile | 1 + kernel/sched/cpufreq_cfs.c | 311 kernel/sched/fair.c | 48 +++ kernel/sched/features.h | 6 + kernel/sched/sched.h| 39 + 10 files changed, 475 insertions(+), 34 deletions(-) create mode 100644 kernel/sched/cpufreq_cfs.c Can you *please* always CC PM-related patches to linux-pm? -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- 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/
[PATCH 0/4] scheduler-based cpu frequency scaling
This series implements an event-driven cpufreq governor that scales cpu frequency as a function of cfs runqueue utilization. The intent of this RFC is to get some discussion going about how the scheduler can become the policy engine for selecting cpu frequency, what limitations exist and what design do we want to take to get to a solution. This work is a different take on the patches I posted in November: http://lkml.kernel.org/r/1413958051-7103-1-git-send-email-mturque...@linaro.org This series depends on having frequency-invariant representations for load. This requires Vincent's recently merged cpu capacity rework patches, as well as a new patch from Morten included here. Morten's patch will likely make an appearance in his energy aware scheduling v4 series. Thanks to Juri Lelli juri.le...@arm.com for contributing to the development of the governor. A git branch with these patches can be pulled from here: https://git.linaro.org/people/mike.turquette/linux.git sched-freq Smoke testing has been done on an OMAP4 Pandaboard and an Exynos 5800 Chromebook2. Extensive benchmarking and regression testing has not yet been done. Before sinking too much time into extensive testing I'd like to get feedback on the general design. Michael Turquette (3): sched: sched feature for cpu frequency selection sched: export get_cpu_usage capacity_orig_of sched: cpufreq_sched_cfs: PELT-based cpu frequency scaling Morten Rasmussen (1): arm: Frequency invariant scheduler load-tracking support arch/arm/include/asm/topology.h | 7 + arch/arm/kernel/smp.c | 53 ++- arch/arm/kernel/topology.c | 17 +++ drivers/cpufreq/Kconfig | 24 include/linux/cpufreq.h | 3 + kernel/sched/Makefile | 1 + kernel/sched/cpufreq_cfs.c | 311 kernel/sched/fair.c | 48 +++ kernel/sched/features.h | 6 + kernel/sched/sched.h| 39 + 10 files changed, 475 insertions(+), 34 deletions(-) create mode 100644 kernel/sched/cpufreq_cfs.c -- 1.9.1 -- 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/
