how to measure IRQ service latency

[loody]

Hi

2011/1/13 neependra.khare at gmail.com <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
thanks for your help :)
Regards,
miloody