Messages in this thread | | | From | Huaixin Chang <> | Subject | [PATCH v6 0/3] sched/fair: Burstable CFS bandwidth controller | Date | Mon, 21 Jun 2021 17:27:57 +0800 |
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Changelog: v6: - Separate burst config to cpu.max.burst. - Rewrite commit log and document for burst feature. - Remove global sysfsctl to disable burst feature. - Some code mofication. - Rebase upon v5.13-rc6.
v5: - Rearrange into 3 patches, one less than the previous version. - The interference to other groups are valued. - Put a limit on burst, so that code is further simplified. - Rebase upon v5.13-rc3. Link: https://lore.kernel.org/lkml/20210520123419.8039-1-changhuaixin@linux.alibaba.com/
v4: - Adjust assignments in tg_set_cfs_bandwidth(), saving unnecessary assignemnts when quota == RUNTIME_INF. - Getting rid of sysctl_sched_cfs_bw_burst_onset_percent, as there seems no justification for both controlling start bandwidth and a percent way. - Comment improvement in sched_cfs_period_timer() shifts on explaining why max_overrun shifting to 0 is a problem. - Rename previous_runtime to runtime_at_period_start. - Add cgroup2 interface and documentation. - Getting rid of exposing current_bw as there are not enough justification and the updating problem. - Add justification on cpu.stat change in the changelog. - Rebase upon v5.12-rc3. - Correct SoB chain. - Several indentation fixes. - Adjust quota in schbench test from 700000 to 600000. Link: https://lore.kernel.org/lkml/20210316044931.39733-1-changhuaixin@linux.alibaba.com/
v3: - Fix another issue reported by test robot. - Update docs as Randy Dunlap suggested. Link: https://lore.kernel.org/lkml/20210120122715.29493-1-changhuaixin@linux.alibaba.com/
v2: - Fix an issue reported by test robot. - Rewriting docs. Appreciate any further suggestions or help. Link: https://lore.kernel.org/lkml/20210121110453.18899-1-changhuaixin@linux.alibaba.com/
v1 Link: https://lore.kernel.org/lkml/20201217074620.58338-1-changhuaixin@linux.alibaba.com/
Previously, Cong Wang and Konstantin Khlebnikov proposed similar feature: https://lore.kernel.org/lkml/20180522062017.5193-1-xiyou.wangcong@gmail.com/ https://lore.kernel.org/lkml/157476581065.5793.4518979877345136813.stgit@buzz/
This time we present more latency statistics and handle overflow while accumulating.
Huaixin Chang (3): sched/fair: Introduce the burstable CFS controller sched/fair: Add cfs bandwidth burst statistics sched/fair: Add document for burstable CFS bandwidth
Documentation/admin-guide/cgroup-v2.rst | 17 +++--- Documentation/scheduler/sched-bwc.rst | 76 ++++++++++++++++++++++---- include/linux/sched/sysctl.h | 1 + kernel/sched/core.c | 96 ++++++++++++++++++++++++++------- kernel/sched/fair.c | 32 ++++++++++- kernel/sched/sched.h | 4 ++ kernel/sysctl.c | 9 ++++ 7 files changed, 200 insertions(+), 35 deletions(-)
-- 2.14.4.44.g2045bb6
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