[Libvir] [PATCH] Xen: Support cpu_weight and cpu_cap for Xen.
beth kon
eak at us.ibm.com
Fri Nov 2 15:47:35 UTC 2007
I am not a user, so my feelings here may be incorrect, but it seems it
might be unpleasant to have to modify 30 (for example) domain configs
when I'm trying to rework tuning information for a machine. I could
imagine a single config file that contains cpu_weight, cpu_cap, the
cpuset, and whatever other tuning information per domain might be
appropriate. Looking at a single file to tweak such values across
multiple domains might be preferable, and make the situation easier to
visualize.
Jim Fehlig wrote:
> David Lutterkort wrote:
>
>> On Fri, 2007-10-26 at 09:08 -0400, Daniel Veillard wrote:
>>
>>
>>> I can understand the need to make it easy for an user, I still don't
>>> think this means those tuning informations need to be associated to the
>>> domain definition, to me it is somehow orthogonal to the domain
>>> themselves
>>> and I would rather try to provide a good solution to the problem, than
>>> try to imitate how Xen was doing that.
>>>
>>
>>
>> Surely, users who set tuning parameters view them as part of their
>> domain description.
>
>
> I agree. It appears the discussions around recent Linux-VServer
> patches includes tuning information in the XML description so I'm a
> little confused if this idea is being received positively or not.
>
> I would like to avoid calling out to some other API for scheduling
> parameters at domU definition if at all possible. Perhaps I've been
> away too long and this functionality already exists :-), but not
> seeing it in http://www.libvirt.org/format.html
>
> Regards,
> Jim
>
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--
Elizabeth Kon (Beth)
IBM Linux Technology Center
Open Hypervisor Team
email: eak at us.ibm.com
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