On Wed, 2012-05-30 at 16:24 +0400, Glauber Costa wrote: > sleep_start is not for iowait. This is for idle. And I know no other way > to collect idle time per cgroup, other than the time during which it was > out of the runqueue. > > Now what you say about the sleepers don't make that much sense for idle > because this information is per-cpu as well. > > When the se is being dequeued, it means none of its children is running > on that runqueue. That's idle. But does that mean the cgroup is idle? Its impossible to re-construct the machine state from this per-cpu data if your definition of cgroup-idle is the time when _all_ cpus are idle. -- 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
