From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754176AbdEDEiZ (ORCPT ); Thu, 4 May 2017 00:38:25 -0400 Received: from out4-smtp.messagingengine.com ([66.111.4.28]:50247 "EHLO out4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752098AbdEDEiR (ORCPT ); Thu, 4 May 2017 00:38:17 -0400 X-ME-Sender: Message-Id: <1493872696.160584.965253552.34C536BA@webmail.messagingengine.com> From: Arun Raghavan To: Dave Jones , Linux Kernel Mailing List Cc: Thomas Gleixner , Linus Torvalds MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" X-Mailer: MessagingEngine.com Webmail Interface - ajax-88a795dc Subject: Re: rlimits: Print more information when CPU/RT limits are exceeded Date: Thu, 04 May 2017 10:08:16 +0530 References: <20170501232152.8142E661220@gitolite.kernel.org> <20170502031230.jz5b6witmmujsdmq@codemonkey.org.uk> In-Reply-To: <20170502031230.jz5b6witmmujsdmq@codemonkey.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2 May 2017, at 08:42 AM, Dave Jones wrote: > On Mon, May 01, 2017 at 11:21:52PM +0000, Linux Kernel wrote: > > Web: https://git.kernel.org/torvalds/c/e7ea7c9806a2681807257ea89085339d33f7fa0b > > Commit: e7ea7c9806a2681807257ea89085339d33f7fa0b > > Parent: 4495c08e84729385774601b5146d51d9e5849f81 > > Refname: refs/heads/master > > Author: Arun Raghavan > > AuthorDate: Wed Mar 1 20:23:09 2017 +0530 > > Committer: Thomas Gleixner > > CommitDate: Mon Mar 13 21:32:15 2017 +0100 > > > > rlimits: Print more information when CPU/RT limits are exceeded > > > > When a process is sent a SIGKILL because it exceeded CPU or RT limits, > > the cause may not be obvious in userspace -- daemonised processes just > > get killed, and even foreground process just see a 'Killed' message. The > > lack of any information on why this might be happening in logs can be > > confusing to users who are not aware of this mechanism. > > > > Add messages which dump the process name and tid in dmesg when a process > > exceeds its CPU or RT limits (soft and hard) in order to make it clearer to > > people debugging such issues. > > > > Signed-off-by: Arun Raghavan > > Link: http://lkml.kernel.org/r/20170301145309.27214-1-arun@arunraghavan.net > > Signed-off-by: Thomas Gleixner > > This needs to be configurable, because this is really obnoxious.. Is there an example of hos this is done elsewhere that I can work off? Thanks, Arun