Re: [RFC][PATCH] memcg: show real limit under hierarchy

[KOSAKI Motohiro]

> I wonder other people who debugs memcg's hierarchy may use similar patches.
> this is my one.
> comments ?
> ==
> From:KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
> 
> Show "real" limit of memcg.
> This helps my debugging and maybe useful for users.
> 
> While testing hierarchy like this
> 
> 	mount -t cgroup none /cgroup -t memory
> 	mkdir /cgroup/A
> 	set use_hierarchy==1 to "A"
> 	mkdir /cgroup/A/01
> 	mkdir /cgroup/A/01/02
> 	mkdir /cgroup/A/01/03
> 	mkdir /cgroup/A/01/03/04
> 	mkdir /cgroup/A/08
> 	mkdir /cgroup/A/08/01
> 	....
> and set each own limit to them, "real" limit of each memcg is unclear.
> This patch shows real limit by checking all ancestors in memory.stat.
> 
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>

Great!

I hoped to use this patch at hierarchy inactive_ratio debugging ;)



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