Attachment 41445 Details for Bug 32647 – perf top output while kworker wakes up 300 times per second

perf top output while kworker wakes up 300 times per second

problem (text/plain), 3.12 KB, created by Antonio Orefice on 2010-12-25 14:17:59 UTC

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Creator: Antonio Orefice

Created: 2010-12-25 14:17:59 UTC

Size: 3.12 KB

patch

obsolete

>-------------------------------------------------------------------------------------------------------------------------------
>   PerfTop:     424 irqs/sec  kernel:74.5%  exact:  0.0% [1000Hz cycles],  (all, 2 CPUs)
>-------------------------------------------------------------------------------------------------------------------------------
>
>             samples  pcnt function                       DSO
>             _______ _____ ______________________________ _____________________________________
>
>              499.00 22.1% intel_idle                     /lib/modules/2.6.36-ice/build/vmlinux
>              344.00 15.3% read_hpet                      /lib/modules/2.6.36-ice/build/vmlinux
>              149.00  6.6% _raw_spin_lock_irqsave         /lib/modules/2.6.36-ice/build/vmlinux
>              107.00  4.7% tg_shares_up                   /lib/modules/2.6.36-ice/build/vmlinux
>               61.00  2.7% hpet_next_event.clone.4        /lib/modules/2.6.36-ice/build/vmlinux
>               60.00  2.7% menu_select                    /lib/modules/2.6.36-ice/build/vmlinux
>               46.00  2.0% find_next_bit                  /lib/modules/2.6.36-ice/build/vmlinux
>               37.00  1.6% schedule                       /lib/modules/2.6.36-ice/build/vmlinux
>               33.00  1.5% cpuidle_idle_call              /lib/modules/2.6.36-ice/build/vmlinux
>               32.00  1.4% find_busiest_group             /lib/modules/2.6.36-ice/build/vmlinux
>               31.00  1.4% cfb_imageblit                  /lib/modules/2.6.36-ice/build/vmlinux
>               27.00  1.2% getnstimeofday                 /lib/modules/2.6.36-ice/build/vmlinux
>               22.00  1.0% ktime_get                      /lib/modules/2.6.36-ice/build/vmlinux
>               20.00  0.9% sched_clock_local              /lib/modules/2.6.36-ice/build/vmlinux
>               18.00  0.8% _raw_spin_unlock_irqrestore    /lib/modules/2.6.36-ice/build/vmlinux
>               18.00  0.8% lapic_timer_setup              /lib/modules/2.6.36-ice/build/vmlinux
>               16.00  0.7% tick_broadcast_oneshot_control /lib/modules/2.6.36-ice/build/vmlinux
>               16.00  0.7% update_wall_time               /lib/modules/2.6.36-ice/build/vmlinux
>               16.00  0.7% run_timer_softirq              /lib/modules/2.6.36-ice/build/vmlinux
>               16.00  0.7% ioread32                       /lib/modules/2.6.36-ice/build/vmlinux
>               16.00  0.7% native_sched_clock             /lib/modules/2.6.36-ice/build/vmlinux
>               15.00  0.7% leave_mm                       /lib/modules/2.6.36-ice/build/vmlinux
>               14.00  0.6% walk_tg_tree                   /lib/modules/2.6.36-ice/build/vmlinux
>               14.00  0.6% dequeue_entity                 /lib/modules/2.6.36-ice/build/vmlinux
>               13.00  0.6% irq_entries_start              /lib/modules/2.6.36-ice/build/vmlinux
>               12.00  0.5% number.clone.1                 /lib/modules/2.6.36-ice/build/vmlinux
>               12.00  0.5% tick_notify                    /lib/modules/2.6.36-ice/build/vmlinux
>               11.00  0.5% update_curr                    /lib/modules/2.6.36-ice/build/vmlinux
>
>

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Attachments on bug 32647: 41436 | 41445 | 41446 | 41449 | 41453 | 41454 | 41455

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