linux-kernel - Re: [RFC PATCH 00/19] Cleanup and optimise the page allocator V2

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:	Wed, 04 Mar 2009 08:23:34 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
Cc:	Mel Gorman <mel@....ul.ie>, Lin Ming <ming.m.lin@...el.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Linux Memory Management List <linux-mm@...ck.org>,
	Rik van Riel <riel@...hat.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Nick Piggin <npiggin@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [RFC PATCH 00/19] Cleanup and optimise the page allocator V2

On Wed, 2009-03-04 at 10:05 +0800, Zhang, Yanmin wrote:
> FAIR_GROUP_SCHED is a feature to support configurable cpu weight for different users.
> We did find it takes lots of time to check/update the share weight which might create
> lots of cache ping-pang. With sysbench(oltp)+mysql, that becomes more severe because
> mysql runs as user mysql and sysbench runs as another regular user. When starting
> the testing with 1 thread in command line, there are 2 mysql threads and 1 sysbench
> thread are proactive.

cgroup based group scheduling doesn't bother with users. So unless you
create sched-cgroups your should all be in the same (root) group.

--
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/