From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 19 Mar 2008 12:59:08 +0900 (JST) Message-Id: <20080319.125908.14787908.taka@valinux.co.jp> Subject: Re: [PATCH O/4] Block I/O tracking From: Hirokazu Takahashi In-Reply-To: <20080318191624.85ca135f.kamezawa.hiroyu@jp.fujitsu.com> References: <20080318.182251.93858044.taka@valinux.co.jp> <20080318191624.85ca135f.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: kamezawa.hiroyu@jp.fujitsu.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, containers@lists.linux-foundation.org List-ID: Hi, > > # mount -t cgroup -o bio none /cgroup/bio > > > > Then, you make new bio cgroups and put some processes in them. > > > > # mkdir /cgroup/bio/bgroup1 > > # mkdir /cgroup/bio/bgroup2 > > # echo 1234 /cgroup/bio/bgroup1/tasks > > # echo 5678 /cgroup/bio/bgroup1/tasks > > > > Now you check the ids of the bio cgroups which you just created. > > > > # cat /cgroup/bio/bgroup1/bio.id > > 1 > > # cat /cgroup/bio/bgroup2/bio.id > > 2 > > > > Finally, you can attach the cgroups to "ioband1" and assign them weights. > > > > # dmsetup message ioband1 0 type cgroup > > # dmsetup message ioband1 0 attach 1 > > # dmsetup message ioband1 0 attach 2 > > # dmsetup message ioband1 0 weight 1:30 > > # dmsetup message ioband1 0 weight 2:60 > > > > You can find the manual of dm-ioband at > > http://people.valinux.co.jp/~ryov/dm-ioband/manual/index.html. > > But the user interface for the bio cgroup is temporal and it will be > > changed after the io_context support. > > > I'm grad if these some kinds of params rather than 'id' are also shown > under cgroup. You mean each bio cgroup has to have a lot of files which shows the status of the cgroup or allows you to control the cgroup. I think this should be done after the cgroup bio subsystem supports io_context since the interface will be changed to support it. > Thanks, > -Kame Thank you, Hirokazu Takahashi. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org