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[Xen-users] sedf scheduler parameters


  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "Diego Woitasen" <diegows@xxxxxxxxx>
  • Date: Tue, 17 Oct 2006 11:58:25 -0300
  • Delivery-date: Tue, 17 Oct 2006 07:59:21 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi,
 I believe that i undertand the concept of sedf scheduler: each
process (VM( runs X millisecond (slice) every X millisecond (period).
The wikepedia article says that the sum of slice1/period1 +
slice2/period2 + ... + sliceN/periodN is the porcentage of CPU used,
so I think that the sum must never be greater than one.

The question is, what it the recommended value por slice/period, for
example, for web hosting virtual machines (20 virtual machines). What
is better, use the weigth or set the slice/period manually?

I can't find good information about scheduling in the web or mailing list.

regards,
 diegows


--
-------------------
Diego Woitasen
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