how to measure IRQ service latency

[neependra.khare at gmail.com]

On Thu, Jan 13, 2011 at 10:23 AM, loody <miloody at gmail.com> wrote:

> hi:
>
> 2010/12/22 neependra.khare at gmail.com <neependra.khare at gmail.com>:
> >
> >
> > On Wed, Dec 22, 2010 at 5:30 PM, Pradeep Kumar <pradeepkernel at gmail.com>
> > wrote:
> >>
> >> hi,
> >>     can any one suggest a way to measure IRQ service latency? .
> >
> > I believe you can measure it with Ftrace. You might need to use irqsoff
> > tracer.
> > For reference:-
> > http://people.redhat.com/srostedt/
> I go into the website and see a lot of files with suffix odp.
>

These are presentations which you can open with Open Office.
Those contain the examples as well.


> is there any document which can tell us how to use it?
>

http://lwn.net/Articles/365835/
http://lwn.net/Articles/366796/
http://lwn.net/Articles/370423/

You can look at my presentation which I gave at FOSS.in and see it is
useful.
http://neependra.net/?p=148


-- 
Regards,
Neependra
www.neependra.net
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110113/2364ecda/attachment.html