linux-kernel - Re: [PATCH 6/6] numa,sched: normalize faults

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]

Date:	Fri, 17 Jan 2014 16:04:09 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Rik van Riel <riel@...hat.com>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...r.kernel.org,
	mingo@...hat.com, chegu_vinod@...com, mgorman@...e.de,
	Rik van Riel <riel@...riel.com>
Subject: Re: [PATCH 6/6] numa,sched: normalize faults_from stats and weigh by
 CPU use

On Fri, Jan 17, 2014 at 09:51:44AM -0500, Rik van Riel wrote:
> On 01/17/2014 04:54 AM, Peter Zijlstra wrote:
> > On Fri, Jan 17, 2014 at 01:17:36AM -0500, riel@...hat.com wrote:
> >> +			/*
> >> +			 * Normalize the faults_from, so all tasks in a group
> >> +			 * count according to CPU use, instead of by the raw
> >> +			 * number of faults. This prevents the situation where
> >> +			 * the garbage collector totally dominates the stats,
> >> +			 * and the access patterns of the worker threads are
> >> +			 * ignored.
> >> +			 */
> > 
> > Instead of focusing on the one example (GC) here, I would suggest
> > saying something along the lines of: Tasks with little runtime have
> > little over-all impact on throughput and thus their faults are less
> > important.
> 
> Thanks for the review, I have updated the comment
> accordingly.
> 
> Does anybody else have comments on this series, or should
> I start begging for Acked-by: and Reviewed-by: lines? :)

I still need to get me head around part of the previous patches, and I
suppose Mel might have a look, give it a few days ;-)
--
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/