linux-kernel - Re: NMI watchdog triggering during load

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1425670155.3775.30.camel@gmx.de>
Date:	Fri, 06 Mar 2015 20:29:15 +0100
From:	Mike Galbraith <efault@....de>
To:	David Ahern <david.ahern@...cle.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: NMI watchdog triggering during load_balance

On Fri, 2015-03-06 at 11:37 -0700, David Ahern wrote:

> But, I do not understand how the wrong topology is causing the NMI 
> watchdog to trigger. In the end there are still N domains, M groups per 
> domain and P cpus per group. Doesn't the balancing walk over all of them 
> irrespective of physical topology?

You have this size extra large CPU domain that you shouldn't have,
massive collisions therein ensue.

	-Mike

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/