Re: [Xen-devel] effect of ticks in xen credit scheduler

[George Dunlap <dunlapg@xxxxxxxxx>]

On Tue, Apr 21, 2015 at 10:48 AM, teabe <teabetab@xxxxxxxxx> wrote:
> Hi,
> I am student starting to work with Xen. I am using Xen 4.2.0.

Out of curiosity, why are you looking at 4.2.0 instead of 4.5, or unstable?

>  I am trying to
> understand the functioning of  the credit scheduler  in Xen. I try to modify
> the scheduler number of ticks per timeslice (form 3 to 1). I wonder that the
> is no difference in the scheduling of my virtual machines (No change in CPU
> allocation % and also application performance in the virtual machine).
> I just wanted to know what is the use of tich during time slice? Why do xen
> define 3 ticks per timeslice?

Did you look at the function csched_tick() and try to figure out what it does?

 -George

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel