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Re: [PATCH] fix bad behavior in use_hierarchy file [message #46984 is a reply to message #46969]

Tue, 26 June 2012 10:31

Glauber Costa
Messages: 916
Registered: October 2011

Senior Member

On 06/26/2012 11:56 AM, Michal Hocko wrote:
> [Adding Ying to CC - they are using hierarchies AFAIU in their workloads]
>
> On Mon 25-06-12 13:49:08, Tejun Heo wrote:
> [...]
>> A bit of delta but is there any chance we can either deprecate
>> .use_hierarhcy or at least make it global toggle instead of subtree
>> thing?
>
> So what you are proposing is to have all subtrees of the root either
> hierarchical or not, right?
>
>> This seems needlessly complicated. :(
>
> Toggle wouldn't help much I am afraid. We would still have to
> distinguish (non)hierarchical cases. And I am not sure we can make
> everything hierarchical easily.
> Most users (from my experience) ignored use_hierarchy for some reasons
> and the end results might be really unexpected for them if they used
> deeper subtrees (which might be needed due to combination with other
> controller(s)).
>
Do we have any idea about who those users are, and how is their setup
commonly done?

We can propose work arounds here, but not without first knowing work
arounds to what =p

One thing that would really influence this, for instance, is whether or
not they limit at all levels in the tree, etc.

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[Message index]

		[PATCH] fix bad behavior in use_hierarchy file By: Glauber Costa on Mon, 25 June 2012 09:21
		Re: [PATCH] fix bad behavior in use_hierarchy file By: KAMEZAWA Hiroyuki on Mon, 25 June 2012 09:54
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Michal Hocko on Mon, 25 June 2012 12:08
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Glauber Costa on Mon, 25 June 2012 12:11
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Michal Hocko on Mon, 25 June 2012 12:49
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Glauber Costa on Mon, 25 June 2012 12:55
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Michal Hocko on Mon, 25 June 2012 13:22
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Tejun Heo on Mon, 25 June 2012 20:49
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Glauber Costa on Mon, 25 June 2012 22:26
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Michal Hocko on Tue, 26 June 2012 07:56
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Glauber Costa on Tue, 26 June 2012 10:31
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Michal Hocko on Tue, 26 June 2012 11:10
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Glauber Costa on Tue, 26 June 2012 11:12
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Tejun Heo on Tue, 26 June 2012 17:55
		Re: [PATCH] fix bad behavior in use_hierarchy file By: Ying Han on Mon, 23 July 2012 17:22

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