linux-kernel - Re: [PATCH -mmotm 0/5] memcg: per cgroup dirty limit (v6)

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, 12 Mar 2010 09:03:26 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Andrea Righi <arighi@...eler.com>
Cc:	Vivek Goyal <vgoyal@...hat.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	Peter Zijlstra <peterz@...radead.org>,
	Trond Myklebust <trond.myklebust@....uio.no>,
	Suleiman Souhlal <suleiman@...gle.com>,
	Greg Thelen <gthelen@...gle.com>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Andrew Morton <akpm@...ux-foundation.org>,
	containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH -mmotm 0/5] memcg: per cgroup dirty limit (v6)

On Fri, 12 Mar 2010 00:59:22 +0100
Andrea Righi <arighi@...eler.com> wrote:

> On Thu, Mar 11, 2010 at 01:07:53PM -0500, Vivek Goyal wrote:
> > On Wed, Mar 10, 2010 at 12:00:31AM +0100, Andrea Righi wrote:

> mmmh.. strange, on my side I get something as expected:
> 
> <root cgroup>
> $ dd if=/dev/zero of=test bs=1M count=500
> 500+0 records in
> 500+0 records out
> 524288000 bytes (524 MB) copied, 6.28377 s, 83.4 MB/s
> 
> <child cgroup with 100M memory.limit_in_bytes>
> $ dd if=/dev/zero of=test bs=1M count=500
> 500+0 records in
> 500+0 records out
> 524288000 bytes (524 MB) copied, 11.8884 s, 44.1 MB/s
> 
> Did you change the global /proc/sys/vm/dirty_* or memcg dirty
> parameters?
> 
what happens when bs=4k count=1000000 under 100M ? no changes ?

-Kame

--
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/