Messages in this thread | | | Date | Fri, 4 Nov 2022 15:29:30 +0800 | Subject | Re: [PATCH v6 0/4] sched/fair: Improve scan efficiency of SIS | From | Abel Wu <> |
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Ping :)
On 10/19/22 8:28 PM, Abel Wu wrote: > This patchset tries to improve SIS scan efficiency by recording idle > cpus in a cpumask for each LLC which will be used as a target cpuset > in the domain scan. The cpus are recorded at CORE granule to avoid > tasks being stack on same core. > > v5 -> v6: > - Rename SIS_FILTER to SIS_CORE as it can only be activated when > SMT is enabled and better describes the behavior of CORE granule > update & load delivery. > - Removed the part of limited scan for idle cores since it might be > better to open another thread to discuss the strategies such as > limited or scaled depth. But keep the part of full scan for idle > cores when LLC is overloaded because SIS_CORE can greatly reduce > the overhead of full scan in such case. > - Removed the state of sd_is_busy which indicates an LLC is fully > busy and we can safely skip the SIS domain scan. I would prefer > leave this to SIS_UTIL. > - The filter generation mechanism is replaced by in-place updates > during domain scan to better deal with partial scan failures. > - Collect Reviewed-bys from Tim Chen > > ... >
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