From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Andrzej Siewior Subject: Re: [PATCH] Make output of RT throttling more verbose Date: Mon, 22 Aug 2016 09:40:06 +0200 Message-ID: <20160822074005.ecckrxmnnqy72crs@linutronix.de> References: <99b19596-c11b-0b92-7376-b1a07f1aaa88@osadl.org> <20160817084613.npcfmylluwhi5suh@linutronix.de> <250cd9a5-7b1d-96b4-1317-c54bc632bb6a@osadl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Cc: linux-rt-users To: Carsten Emde Return-path: Received: from Galois.linutronix.de ([146.0.238.70]:52175 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754656AbcHVHkK (ORCPT ); Mon, 22 Aug 2016 03:40:10 -0400 Content-Disposition: inline In-Reply-To: <250cd9a5-7b1d-96b4-1317-c54bc632bb6a@osadl.org> Sender: linux-rt-users-owner@vger.kernel.org List-ID: On 2016-08-21 23:39:21 [+0200], Carsten Emde wrote: > Hi Sebastian, Hi Carsten, > We could save a short history of RT tasks along with their uninterrupted > runtime and, in case of throttling, print the one with the longest > uninterrupted runtime. A sched_switch tracer would do that. It only does not stop and records SCHED_OTHER as well. Maybe the tracing folks have an idea. > Carsten. Sebastian