Re: [Xen-devel] Re: Accounting in Credit Scheduler

["Diwaker Gupta" <diwaker.lists@xxxxxxxxx>]

> One more curiousity is how often a timer routine is called & how often 
> scheduling code?  It may be configurable interval as well, but then whats default 
> value.
> I guess timer is called more frequently & call to scheduling routine is made 
> less frquently and is called from timer itself.
>
> Can I get pointer to some reference where I will get to know how exactly this 
> mechanism works. May be digging through code will be expensive option so I want 
> to avoid it for a moment.
Your best bet is to study the code. The scheduler code is fairly
readable. IIRC, the accounting code happens in two parts -- every
10ms, measurements are made, but only every 30ms the measurements are
used to update accounting information. Read xen/common/sched_credit.c

Diwaker
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