Mulyadi Santosa wrote:
> Hi Li...
>
> On Wed, Jun 18, 2008 at 10:09 AM, Li Zefan <[EMAIL PROTECTED]> wrote:
>> Yes, it's something like CKRM. Some years ago we had several proposals like
>> CKRM,
>> ResGroups, User BeanCounters and others.
>
> Interesting....I'll read more about it ASAP. I'm kinda interested in
> resource management lately.
>
> But if I may know, using current state of cgroup, can I really do fine
> grained resource control? I mean, if I "trim" certain process group
> CPU usage not more than 20% of total CPU time, is it really 20%? or if
> there's "tolerance", how big is it according to real life test?
>
That's cpu subsystem - fair group scheduler. You can try it with a new kernel:
# mount -t cgroup -o cpu xxx /mnt
But it's soft limit not hard limit, I mean, if you limit a group's cpu time to
20%,
it can get 100% if no other processes in other groups are running.
And this cpu subsystem is still far from perfect, Peter Zijlstra is working on
it.
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