cgroup freezer

[bill4carson]

On 2012年02月20日 23:06, Mulyadi Santosa wrote:
> Hi Bill :)
>
> On Mon, Feb 20, 2012 at 16:50, bill4carson<bill4carson at gmail.com>  wrote:
>> IMHO, when system load is high, administrator could freeze some of
>> cpu-hogged tasks in favor of more important ones, once system is most
>> likely to be idle, frozen tasks could be thaw back on line.
>
> what you describe, IIRC, is something doable via "batch" command
>
>> I don't know this idea is right or wrong, can somebody give me some
>> hints about practical usage of cgroup freezer?
>
> IMHO, it's also useful if you manage computer grid. So say you have 16
> nodes. A job runs on node A, but later you found that node C has the
> least load. You freeze the job and then unfreeze it in C.
>
Thanks for your reply :)
Just one silly question, how could frozen task be moved from node A to
C ?


> Of course, it assumes that the nodes are homogen. And yes, it sounds
> very similar to virtual machine migration. basically, both of them
> have same principle on how to get things done.
>
Yes, KVM+qemu have already support this feature.


-- 
I am a slow learner
but I will keep trying to fight for my dreams!

--bill