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Date: Thu, 04 May 2017 10:08:16 +0530 From: Arun Raghavan <arun@...nraghavan.net> To: Dave Jones <davej@...emonkey.org.uk>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Cc: Thomas Gleixner <tglx@...utronix.de>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: rlimits: Print more information when CPU/RT limits are exceeded 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 <arun@...nraghavan.net> > > AuthorDate: Wed Mar 1 20:23:09 2017 +0530 > > Committer: Thomas Gleixner <tglx@...utronix.de> > > 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 <arun@...nraghavan.net> > > Link: http://lkml.kernel.org/r/20170301145309.27214-1-arun@arunraghavan.net > > Signed-off-by: Thomas Gleixner <tglx@...utronix.de> > > 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
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