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Re: [Xen-users] Bad network performance between VMs in a doma in.

To: "Petersson, Mats" <Mats.Petersson@xxxxxxx>
Subject: Re: [Xen-users] Bad network performance between VMs in a doma in.
From: tgh <tianguanhua@xxxxxxxxxx>
Date: Thu, 19 Apr 2007 09:21:33 +0800
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hi
 I have a question about credit and vcpuset
credit could automatically allocate the doms among the cpus,and if we set the cpu to a domain statically ,will it potentially ruin the whole balancing of credit scheduler? and could credit not automatically balance the load in the network scenario?

I am confuesd about it
could you help me out

Thanks in advance

And how is the cores distributed between Dom0 and the two DomU's, are all using "any", or are the cores dedicated to a particular domain? If not, you may want to reduce the number of cores for Dom0 to 1 or 2, and set a dedicated core for each DomU. Setting Dom0 can be done with "xm vcpu-set" or modifying /etc/xen/xend-config.sxp (dom0-cpus n) where n is the number of CPU's for Dom0. If this number is zero, Dom0 has all CPU's in the system, and that will not be the ideal solution. Setting "cpus=[2-3]" or "cpu=2" in the config file will restrict which cores your DomU runs on.


--
Mats

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