hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IA7CCA CVE: NA -------------------------------- We find the commit bb29df9fb065 ("sched/fair: Introduce SIS_UTIL to search idle CPU..."), which cause performance degradation with Unixbench pipe-base contextswich case tested on Kunpeng 920B. Test case: ./Run context1 -c `nproc` -i 3 Unixbench results (Pipe-based_Context_Switching): baseline patched 4.5w 8.5w Test on Kunpeng 920B Fixes: bb29df9fb065 ("sched/fair: Introduce SIS_UTIL to search idle CPU...") Signed-off-by: Hui Tang <tanghui20@huawei.com> --- kernel/sched/features.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 83f524cea64d..1b789ae9079c 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -54,8 +54,8 @@ SCHED_FEAT(TTWU_QUEUE, true) /* * When doing wakeups, attempt to limit superfluous scans of the LLC domain. */ -SCHED_FEAT(SIS_PROP, false) -SCHED_FEAT(SIS_UTIL, true) +SCHED_FEAT(SIS_PROP, true) +SCHED_FEAT(SIS_UTIL, false) #ifdef CONFIG_SCHED_STEAL /* -- 2.34.1