Re: [PATCH v2 2/3] sched/fair: Move hot load_avg into its own cacheline

Mike Galbraith
2015-12-03T04:32:32Z

On Wed, 2015-12-02 at 13:41 -0500, Waiman Long wrote:

> By doing so, the perf profile became:
>
> 9.44% 0.00% java [kernel.vmlinux] [k] smp_apic_timer_interrupt
> 8.74% 0.01% java [kernel.vmlinux] [k] hrtimer_interrupt
> 7.83% 0.03% java [kernel.vmlinux] [k] tick_sched_timer
> 7.74% 0.00% java [kernel.vmlinux] [k] update_process_times
> 7.27% 0.03% java [kernel.vmlinux] [k] scheduler_tick
> 5.94% 1.74% java [kernel.vmlinux] [k] task_tick_fair
> 4.15% 3.92% java [kernel.vmlinux] [k] update_cfs_shares
>
> The %cpu time is still pretty high, but it is better than before.

Is that with the box booted skew_tick=1?

-Mike