Re: [Xen-devel] [PATCH] only set scheduler timer for non-idle CPU

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 02/04/2009 14:06, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote:

>> I think your patch is not good in case sedf-scheduler is used. If idle VCPU
>> is the current "running" VCPU, the scheduler timer is set to the next "period
>> begin" of the first VCPU in the wait queue.
>> Your patch prevents sedf from taking the VCPUs waiting for their next period
>> into the runnable queue again.
> 
> It¹s probably cleaner always to respect the specific scheduler¹s scheduling
> quantum in schedule.c, but then have sched_credit.c return a very large
> quantum (large as possible) for the idle VCPU.

I checked in something to this effect as c/s 19500.

 -- Keir



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