From: JJ Hiblot <jjhiblot@gmail.com>
To: Mohammed Riyaz <riyaz.list@gmail.com>, linux-perf-users@vger.kernel.org
Subject: Re: Measuring worst case interrupt processing time
Date: Mon, 09 Dec 2013 12:26:14 +0100 [thread overview]
Message-ID: <52A5A8D6.6020401@gmail.com> (raw)
In-Reply-To: <CAL7o8itUf0wOj-f7LEF=EfydzimOkpi1VrTZXVE0VvECNP0VPQ@mail.gmail.com>
Hi,
I used to do this kind of measurement with a GPIO and an oscilloscope
set up in persistence mode. In this case ,the precision of the measure
doesn't depend of the timer's resolution.
Jean-Jacques
Le 08/12/2013 14:18, Mohammed Riyaz a écrit :
> Hi,
>
> I am working on trying to measure the worst case processing time for
> hard IRQ and soft IRQ. Well, I understand that we could use time
> stamps at entry and exit to measure this. Just wanted to know if there
> were other standard ways of measuring this. Any suggestions?
>
> Thanks
>
> Riyaz
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next prev parent reply other threads:[~2013-12-09 11:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-08 13:18 Measuring worst case interrupt processing time Mohammed Riyaz
2013-12-09 3:49 ` Andi Kleen
2013-12-10 9:14 ` Mohammed Riyaz
2013-12-09 11:26 ` JJ Hiblot [this message]
2013-12-09 12:17 ` Mohammed Riyaz
2013-12-09 16:53 ` Jean-Jacques Hiblot
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