Re: [Xen-users] Frequent para (Linux) domU hangs

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Oct 16, 2009 at 10:01:40AM +1300, Jan Bakuwel wrote:
> Hi Pasi,
> 
> > Just a thought; have you set up xen domain weights so that dom0 will
> > always have cpu time to process IO requests properly? ie. dom0 gets more
> > cpu than domUs.
> >   
> 
> Thanks for the tip - that makes sense. I did indeed not have domain
> weights set up - now I have.
>

Ok.

> There are several posts on the Internet saying that if dom0 has the same
> weight as the domU's (which is the default: 256), you may have serious
> trouble with domU's under high load. Wouldn't it make sense that dom0 by
> default would have a higher weight?
> 

Maybe.. then again some people do it differently; they dedicate a single
core only for dom0, and use the other cores for domUs.

-- Pasi


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