On 21/06/2019 14:03, Peter Zijlstra wrote: > On Fri, Jun 21, 2019 at 03:45:52PM +0800, xiaoggchen@xxxxxxxxxxx wrote: > >> First only server application exists in the system and the success >> rate is 99.998% and the average cpu use is only 25%. > > Have you guys looked at this series: > > https://lkml.kernel.org/r/cover.1556182964.git.viresh.kumar@xxxxxxxxxx > > Sort of a shot in the dark here, but I wonder if task stealing [1] could help as well? IIRC Steve had some pretty good CPU utilization improvements with his series. FWIW I have a somewhat recent rebase of CFS stealing laying around at [2]. [1]: https://lore.kernel.org/lkml/1544131696-2888-1-git-send-email-steven.sistare@xxxxxxxxxx/ [2]: http://www.linux-arm.org/git?p=linux-vs.git;a=shortlog;h=refs/heads/mainline/cfs-stealing/v4-rebase
