On Fri, 2015-01-09 at 20:19 +0530, Vaibhav Shinde wrote:
> My app runs on cpu0, while other cpus looks idle; as per my
> understanding from your comment owner of the mutex is on the cpu other
> than cpu0, and which is causing wait spin on cpu0.
The thing is, cpu0 is rescheduling too often, so you'
On Fri, 9 Jan 2015 20:19:51 +0530
Vaibhav Shinde wrote:
> Hi Peter,
>
> Thanks for you reply.
>
> I am interested in scheduling latency, and using ftrace I see for my
> application suffering from it, that's why I am digging in preemption/irq
> disable time which might cause the latency.
>
> My
On Fri, Jan 09, 2015 at 02:31:35PM +0530, Vaibhav Shinde wrote:
> Hi All,
>
> I have been checking preemption/irqs off latency with ftrace to find out
> the reason for scheduling latency for my application -
>
> echo 0 > options/function-trace
> echo preemptirqsoff > current_tracer
> echo 1 > tra
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