Messages in this thread | | | Subject | Re: [PATCH] Add slowpath enter/exit trace events | From | peter enderborg <> | Date | Fri, 24 Nov 2017 08:43:47 +0100 |
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On 11/23/2017 02:43 PM, Tetsuo Handa wrote: > Please see my attempt at > http://lkml.kernel.org/r/1510833448-19918-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp . > Printing just current thread is not sufficient for me. > > Seems to me that it is a lot more overhead with timers and stuff. My probe is for the health of the system trying to capture how get the penalty and how much. A slowpath alloc in a audio stream can causes drop-outs. And they are very hard to debug in userspace.
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