On 12/02/2015 11:32 PM, Mike Galbraith wrote:
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
I haven't tried that kernel parameter. I will try it to see if it can improve the situation. BTW, will there be other undesirable side effects of using this other than the increased power consumption as said in the kernel-parameters.txt file?
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