2016-08-11 0:52 GMT+08:00 Rik van Riel <r...@redhat.com>: > On Wed, 10 Aug 2016 07:39:08 +0800 > Wanpeng Li <kernel...@gmail.com> wrote: > >> The regression is caused by your commit "sched,time: Count actually >> elapsed irq & softirq time". > > Wanpeng, does this patch fix your issue?
I test this against kvm guest (nohz_full, four vCPUs running on one pCPU, four cpuhog processes running on four vCPUs). before this fix patch: vCPU0's st is 100%, other vCPUs' st are ~75%. after this fix patch: all vCPUs' st are ~85%. However, w/o commit "sched,time: Count actually elapsed irq & softirq time", all vCPUs' st are ~75%. Regards, Wanpeng Li
