Fw: systemtap application to find applications doing polling

[Frank Ch. Eigler]

Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> writes:

> [...]
> This wakeup rate is very high and this implies that we should use the
> stap script for a per-application level wakeup tracing only and should
> not try to profile the overall system.
> Definitely some opportunity here for stap to reduce wakeups :)

Yes, will do.

> [...]
>> There has been some work on userspace probing for systemtap. It isn't in a
>> packaged distro yet, but there should be one for fedora coming out soon.
>> However, this needs utrace in the kernel.
>
> Looking forward to this feature.  [...]

There is a release 0.8 in fedora that you can experiment with already.
git systemtap is better for shared library probing though.


- FChE