From mboxrd@z Thu Jan 1 00:00:00 1970 From: JJ Hiblot Subject: Re: Measuring worst case interrupt processing time Date: Mon, 09 Dec 2013 12:26:14 +0100 Message-ID: <52A5A8D6.6020401@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from smtp3-g21.free.fr ([212.27.42.3]:55459 "EHLO smtp3-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932735Ab3LIL0i (ORCPT ); Mon, 9 Dec 2013 06:26:38 -0500 In-Reply-To: Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: Mohammed Riyaz , linux-perf-users@vger.kernel.org Hi, I used to do this kind of measurement with a GPIO and an oscilloscope=20 set up in persistence mode. In this case ,the precision of the measure= =20 doesn't depend of the timer's resolution. Jean-Jacques Le 08/12/2013 14:18, Mohammed Riyaz a =E9crit : > 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 ther= e > were other standard ways of measuring this. Any suggestions? > > Thanks > > Riyaz > -- > To unsubscribe from this list: send the line "unsubscribe linux-perf-= users" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html