linux-kernel - Re: [PATCH] sched: smart wake-affine

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: <1373273368.30325.7.camel@marge.simpson.net>
Date:	Mon, 08 Jul 2013 10:49:28 +0200
From:	Mike Galbraith <efault@....de>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Michael Wang <wangyun@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>, Alex Shi <alex.shi@...el.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Turner <pjt@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Nikunj A. Dadhania" <nikunj@...ux.vnet.ibm.com>,
	Ram Pai <linuxram@...ibm.com>
Subject: Re: [PATCH] sched: smart wake-affine

On Mon, 2013-07-08 at 10:21 +0200, Peter Zijlstra wrote: 
> On Sun, Jul 07, 2013 at 08:43:25AM +0200, Mike Galbraith wrote:
> > On Fri, 2013-07-05 at 14:16 +0800, Michael Wang wrote:
> > 
> > > PeterZ has suggested some optimization which I sent out yesterday, I
> > > suppose they haven't been included into this test yet, correct?
> > 
> > No, that was with both v3 patches applied.  hackbench -l 1000 delta
> > tracked to next pull/build fwiw, but I don't see anything noteworthy
> > elsewhere, so I'm filing it under "tasks/core ~= zillion ~= hohum".
> 
> OK, I'll apply the patches, we'll see what happens. If there significant
> fallout we'll immediately have more information anyway ;-)

Yup.  It's a repeatable oddity on my box, but it doesn't even track to
itself when using different hackbench parameters.  All I can really
conclude from test results is "golly, changing stuff affects stuff" :) 

-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/