Re: [Xen-devel] [PATCH] xen/sched_credit: Use delay to control scheduling frequency

[George Dunlap <george.dunlap@xxxxxxxxxxxxx>]

On 02/01/12 03:19, Jan Beulich wrote:
> > > > On 26.12.11 at 09:46, Hui Lv<hui.lv@xxxxxxxxx>  wrote:
> > Some modifications for this patch.
> > 1.Based on George's proposal, added a ratelimit_us element to csched_priv to
> > constrain prv->ratelimit_us<= 1000* prv->tslice_ms in csched_init.
> I do not see why you need a per-scheduler-instance variable for
> issuing the warning and correcting the value - one warning (during
> the first initialization) is entirely sufficient. (Otoh the already existing
> tslice_ms field is pointless currently too, as it never gets changed
> after being initialized from sched_credit_tslice_ms - George?)
Before the 4.2 release, I plan to add SYSCTL_scheduler_op calls for the 
credit scheduler for both the timeslice and ratelimiting.  But I don't 
think it's necessary for this patch to be admitted.
 -George

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