Re: cap and reservation functionality in the credit2 scheduler?

[Eunbyung Park <silverbottlep@gmail.com>]

2011-10-05 오후 7:24, George Dunlap 쓴 글:
>> > From my humble point of view, probably additional timer may be required
>> to implement them because there isn't any periodic timer in the credit2
>> unlike the previous credit scheduler.
>>
>> what do you think about it?
> I'm not opposed in principle, but until I've seen the whole algorithm,
> I can't really comment. :-)  Do you have an algorithm in mind?
Actually, I don't have any idea in mind yet.
however, I will try to devise a method to support them and make a patch.
So, If you can afford to review, I will appreciate it :)

And, I think that there are still some to-do lists for the credit2 and 
xl tools needs to include credit2 support.

In addition, I found that adjusting dom0 weight have failed to work, but 
except for the dom0, it worked well.
I found that this problem had been on xen-devel lists long time ago, but 
it seems not to be solved yet.
I think this may be related with spinlock. When I remove the 
vcpu_schedule_lock_irq() in csched_dom_cntl(), it worked well.
I'm not sure what is the real problem because I didn't completely 
understand the mechanism about spinlocks in xen scheduler.

Any comments? or new thread needed?

-- 
Best Regards,
Eunbyung Park