Re: [ckrm-tech] [RFC][PATCH] UBC: user resource beancounters

From: Chandra Seetharaman
Date: Mon Aug 21 2006 - 18:42:58 EST

On Mon, 2006-08-21 at 23:20 +0100, Alan Cox wrote:
> Ar Llu, 2006-08-21 am 14:45 -0700, ysgrifennodd Chandra Seetharaman:
> > As I mentioned UBC might be perfect for container resource management,
> > but what I am talking for is resource management _without_ a container.
> There isn't really a difference. UBC counts usage of things. It has to
> know who to charge the thing to but its core concept of the luid isn't a
> container, its more akin to the a departmental or project billing code.

I didn't say it is different. The way it is implemented now has some
restrictions for generic resource management purposes (like ability to
move task around), but they are not a problem for container type usage.

> > > 3. is it so BIG obstacle for UBC patch? These 3-lines hooks code which
> > > is not used?
> Add them later when they prove to be needed. If IBM send a feature that
> needs it then add them in that feature. Everyone is happy it is possible
> to add that hook when needed.

As I mentioned in my reply, I am ok with adding it later.

> > In a non-container situation IMO it will be easier to manage/associate
> > "gold", "silver", "bronze", "plastic" groups than 0, 11, 83 and 113.
> User space issue. Doing that in kernel will lead to some limitations
> later on and end up needing the user space anyway. Consider wanting to
> keep the container name and properties in LDAP.
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Chandra Seetharaman | Be careful what you choose....
- sekharan@xxxxxxxxxx | may get it.

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