Messages in this thread | | | Subject | Re: [Devel] Re: [RFC] libcg: design and plans | From | "Denis V. Lunev" <> | Date | Wed, 05 Mar 2008 10:17:47 +0300 |
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On Tue, 2008-03-04 at 22:15 -0800, Paul Menage wrote: > Hi Dhaval, > > On Tue, Mar 4, 2008 at 7:23 AM, Dhaval Giani <dhaval@linux.vnet.ibm.com> wrote: > > Hi, > > > > We have been working on a library for control groups which would provide > > simple APIs for programmers to utilize from userspace and make use of > > control groups. > > > > We are still designing the library and the APIs. I've attached the > > design (as of now) to get some feedback from the community whether we > > are heading in the correct direction and what else should be addressed. > > There are a few things that it would be nice to include in such a > library, if you're going to develop one: > > - the ability to create abstract groups of processes, and resource > groups, and have the ability to tie these together arbitrarily. E.g > you might create abstract groups A, B and C, and be able to say that A > and B share memory with each other but not with C, and all three > groups are isolated from each other for CPU. Then libcg would mount > different resource types in different cgroup hierarchies (you would > probably tell it ahead of time which combinations of sharing you would > want, in order that it could minimize the number of mounted > hierarchies). When you tell libcg to move a process into abstract > group A, it would move it into the appropriate resource group in each > hierarchy.
There is one more important thing. In addition to the processes you must unite or provide a way to unite other objects like sockets. This is needed to create a group-based socket buffer management.
The mapping between socket and a process does not exists right now and, we can have (virtually), sockets from from different namespaces in one process.
Regards, Den
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