Messages in this thread | | | Subject | Re: [lkp] [fs] df4c0e36f1: NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:1] | From | Dave Hansen <> | Date | Mon, 2 Nov 2015 09:39:42 -0800 |
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On 11/02/2015 01:32 AM, Andrey Ryabinin wrote: > And the major factor here is number 2. > > In your dmesg: > [ 67.891156] rbtree testing -> 570841 cycles > [ 88.609636] augmented rbtree testing > [ 116.546697] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! > [swapper/0:1] > > > I've tried to reproduce this, and got this: > [ 0.693574] rbtree testing -> 15513 cycles > 570841/15513 = 36x times faster. > > [ 1.159450] augmented rbtree testing -> 23675 cycles > [ 1.864996] > It took less than a second, meanwhile in your case it didn't finish in > 22 seconds. > > This makes me think that your host is overloaded and the problem is on > your side.
It's probably just a matter of putting some cond_resched()s in the test code.
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