[Devel] Re: [PATCH 1/9] io-throttle documentation

[KAMEZAWA Hiroyuki]

On Tue, 14 Apr 2009 22:21:12 +0200
Andrea Righi <righi.andrea at gmail.com> wrote:

> +Example:
> +* Create an association between an io-throttle group and a bio-cgroup group
> +  with "bio" and "blockio" subsystems mounted in different mount points:
> +  # mount -t cgroup -o bio bio-cgroup /mnt/bio-cgroup/
> +  # cd /mnt/bio-cgroup/
> +  # mkdir bio-grp
> +  # cat bio-grp/bio.id
> +  1
> +  # mount -t cgroup -o blockio blockio /mnt/io-throttle
> +  # cd /mnt/io-throttle
> +  # mkdir foo
> +  # echo 1 > foo/blockio.bio_id

Why do we need multiple cgroups at once to track I/O ?
Seems complicated to me.

Thanks,
-Kame

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