On Fri, 2013-03-22 at 15:41 +0000, Christoph Lameter wrote:
> The control is via the cpu_partial field in /sys/kernel/slab/<cache>/
>
> There is also slabs_cpu_partial which gives a view as to how many objects
> are cached in each per cpu structure. Do a cat
>
> /sys/kernel/*/slabs_cpu_partial to get a view of what the situation is.
> Any abnormally high numbers?
>
> The default for the number of per cpu partial objects should be 30 or so.
I just triggered another latency:
hackbenc-31634 5d..31 103261.991668: sched_switch: hackbench:31634
[120] D ==> hackbench:36093 [120]
hackbenc-36093 5d...0 103261.991670: funcgraph_entry: ! 225.665 us |
unfreeze_partials();
hackbenc-36093 5d...0 103261.991897: funcgraph_entry: |
smp_apic_timer_interrupt() {
hackbenc-36093 5d.h10 103261.991897: hrtimer_expire_entry:
hrtimer=0xffff881f5ca7fe88 now=103293011955940 function=hrtimer_wakeup/0x0
hackbenc-36093 5d.h30 103261.991898: sched_wakeup: cyclictest:8946
[4] success=1 CPU:005
hackbenc-36093 5dN..0 103261.991901: funcgraph_exit: 3.589 us | }
hackbenc-36093 5d..30 103261.991902: sched_switch: hackbench:36093
[120] R ==> cyclictest:8946 [4]
I did a: cat /sys/kernel/slab/*/slabs_cpu_partial > slab_partials
I uploaded it here:
http://rostedt.homelinux.com/private/slab_partials
See anything I should be worried about?
Thanks,
-- Steve
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