Hi Binoy,
On 08/12/2016 12:25 PM, Binoy Jayan wrote:
Hi all,
I am sending this patch series here before public review. Please have a look and provide your insight into its correctness.
These set of patches capture latency events caused by interrupts and premption disabled in kernel. The patches are based on the hist trigger feature developed by Tom Zanussi.
Git-commit: 7ef224d1d0e3a1ade02d02c01ce1dcffb736d2c3
As mentioned by Daniel, there is also a good write up in the following blog by Brendan Gregg: http://www.brendangregg.com/blog/2016-06-08/linux-hist-triggers.html
The perf interface for the same have not been developed yet. Related efforts: https://patchwork.kernel.org/patch/8439401
hwlat_detector tracer: https://lkml.org/lkml/2016/8/4/348 https://lkml.org/lkml/2016/8/4/346
The patch series also contains histogram triggers for missed hrtimer offsets.
Thanks for picking this up. I suggest you also send these patches for review to lkml and probably linux-rt-users.
I am fine with dropping my 'not for inclusion' tag and add my sob.
cheers, daniel