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Re: [Xen-users] hyperthrading

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] hyperthrading
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Tue, 14 Jun 2005 23:12:37 +0100
Cc: gerardi <xen@xxxxxxxxxx>
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> I am using an P4 with hyperthreading. At the moment I switched one cpu
> to dom0
> and all domU to cpu two.
> Is this the best solution or should I share the domUs between both cpus ?

It's an interesting question :-)

It's somewhat workload dependent but personally I think your solution sounds 
reasonable.  If you have time, you might like to try distributing domains 
across both threads and seeing if it makes any difference.

Unless your domains are heavily loaded, you won't see much difference anyhow.


> Here is the output from xm list
> Name        CPU  State  Time(s)
> Domain-0     0  r----   4464.6
> low          1  -b---   1006.0
> mail         1  -b---    600.7
> main         1  -b---  23448.4
> normal       1  -b---   7535.2
> test         1  -b---    915.7
> Martin
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