Messages in this thread | | | Date | Tue, 08 Sep 2009 14:05:16 +0900 (JST) | Subject | Re: Regarding dm-ioband tests | From | Ryo Tsuruta <> |
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Hi Balbir,
Balbir Singh <balbir@linux.vnet.ibm.com> wrote: > * Ryo Tsuruta <ryov@valinux.co.jp> [2009-09-08 12:01:19]: > > > I think there are some advantages to dm-ioband. That's why I post > > dm-ioband to the mailing list. > > > > - dm-ioband supports not only proportional weight policy but also rate > > limiting policy. Besides, new policies can be added to dm-ioband if > > a user wants to control bandwidth by his or her own policy. > > - The dm-ioband driver can be replaced without stopping the system by > > using device-mapper's facility. It's easy to maintain. > > - dm-ioband can use without cgroup. (I remember Vivek said it's not an > > advantage.) > > But don't you need page_cgroup for IO tracking?
It is not necessary when controlling bandwidth on a per partition basis or on a IO thread basis like Xen blkback kernel thread.
Here are configration examples. http://sourceforge.net/apps/trac/ioband/wiki/dm-ioband/man/examples
Thanks, Ryo Tsuruta
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