Re: [Xen-users] Xen Performance

Adam Wead
Tue, 02 Jun 2009 03:04:13 -0000

On Jun 1, 2009, at 8:43 PM, Luke S Crawford wrote:
>
>
> Also note, I''ve seen better worst-case performance by giving each
> VM fewer
> VCPUs, and the xen guys are not kidding about dedicating a core to the
> Dom0.   setting cpus="1-7" in your xm config file (assuming an 8
> core box)
> and giving dom0 only 1 vcpu makes a world of difference on heavily
> loaded boxes.
>

This may be a dumb question, but is that any different from or the
same as setting "dom0-cpus 1" in the xend-config.sxp file?  Are you
specifying "cpus=1-7" in the guest''s config or the Xen
daemon''s config?

thanks in advance for clearing up my confusion,

...adam