Re: [ckrm-tech] [RFC][PATCH] UBC: user resource beancounters
From: Kirill Korotaev
Date: Fri Aug 25 2006 - 07:06:58 EST
Chandra Seetharaman wrote:
On Thu, 2006-08-24 at 10:27 -0700, Rohit Seth wrote:
<snip>
What do you mean by "resource management part for non-container world
already exist ?
It does not. CKRM/Resource Groups is trying to do that, but is not in
Linus's tree.
Please, non-container is the environment that exist today in Linux.
Actually cpuset does provide some part of it. But beyond that no.
cpuset provides resource _isolation_, not necessarily resource
management.
But then we are all using different terminology like beancounters,
containers, resource groups and now non-containers...
<snip>
I'm sure when container support gets in then for the above scenario it
will read -1 ...
So, how can one get the list of tasks belonging to a resource group in
that case ?
...and that brings to the starting question...why do you need it?
Like I said earlier, there is _no_ other way to get the list of tasks
belonging to a resource group.
Commands like ps and top will show appropriate container number for each
task.
There is _no_ container number in the non-container environment (or it
will be same for _all_ tasks).
Chandra, virtual container number is essentially the same as user id
in non-container environment. UBC were desgined for _users_ first.
Containers were just the first environment which started to use it widely.
And I really disagree when you say that non-container usecase is
a superset of container usecase. I believe it is vice versa, since
in container usecase you have a _full_ environment with root user and need
more resources to be taken into account.
Thanks,
Kirill
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