[Devel] Re: statistics accounting in container

[Balbir Singh]

Daniel Lezcano wrote:
> Ian jonhson wrote:
>> Dear all,
>>
>> I am now working in the development of user tool for container
>> (built by Daniel Lezcano) and interest in the accounting
>> of container. Now, I would like to know whether the patches stated
>> in:
>> http://lwn.net/Articles/229974/
> 
> I think this one is known as CONFIG_CGROUP_CPUACCT and it is in mainline.
> 
>> http://lwn.net/Articles/243795/
> 
> This one is in mainline too. It is a subsystem of the resource
> controller. Note that it is related to physical memory.
> 
>> is been embedded in mainstream. More further, what is the
>> development status of  CPU,MEM, network bandwidth in container?
> 
> I am not sure what you mean by CPU bandwidth. There is the cgroup
> scheduler which allows to prioritize a group of processes but I don't 
> think there is a resource controller which blocks a set of processes 
> when a cpu consumption limit has been reached.
> 

This is under discussion, since the implementation needs many more things to be
considered.

> For the memory, there is the memory controller which gives an amount of 
> physical memory to a group of processes. When the limit is reached, the 
> processes begin to swap. There is some statistics in the cgroup files 
> about the memory consumption and the limits reached by the group.
> 

Some features like hierarchy support and soft limits are under development. Only
hard limits are available ATM.

-- 
	Balbir
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