On Wed, Jun 26, 2013 at 2:08 PM, Vivek Goyal <vgoyal@xxxxxxxxxx> wrote: > I don't have an objection to not listing stats of devices which are > zero, but wondering why all the devices of system are showing in > cgroup stat. > > Don't we add a blkg to a blkcg only if that cgroup did some IO to > that particular device. If yes, then only those devices should > show to which cgroup did some IO and that should be non-zero. > > Is it because of hierarchical support where if a child does IO > to device, we will add an blkg instance to parent's cgroup? In > that case hierarchical stats will still be non-zero but group > local stat can be zero. I wondered that too. Maybe they're configuring all combinations? Anatol? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
