| 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
| ||
|
Date: Tue, 06 May 2014 14:42:33 +0200 From: Mike Galbraith <mgalbraith@...e.de> To: Borislav Petkov <bp@...en8.de> Cc: lkml <linux-kernel@...r.kernel.org>, x86-ml <x86@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Mel Gorman <mgorman@...e.com>, Steven Rostedt <rostedt@...dmis.org> Subject: Re: Slow down stupid pounders On Tue, 2014-05-06 at 12:29 +0200, Borislav Petkov wrote: > Hi, > > so I'm getting sick'n'tired of all those bug reports of people pounding > cpu hotplug with stupid scripts. > > * We know cpu hotplug is fragile/buggy/crap/needs proper rewrite. > > * Stupid hotplugging script doesn't resemble any real use case - go use > a real benchmark/stress test to trigger bugs. > > So if we can't make pounders stop jerking off, let's make it > uninterestingly slow. Stupid patch below, it might be completely idiotic > to do it this way but at least starts the discussion about this being a > really annoying issue which needs some sort of dealing with. > > I dunno, we can make it configurable (which will probably defeat its > purpose partially), we can do some more fancy ratelimiting, per cpu, > whatever... we'll see. > > Opinions, flames? Damn. I was gonna suggest we shorten hours in -rt kernels to achieve my full day stress testing survival goal. -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/
Powered by blists - more mailing lists