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xen-devel
Re: [Xen-devel] More network tests with xenoprofile this time
On Tuesday 31 May 2005 05:48 pm, Ian Pratt wrote:
> > I have cpu util from polling xc_domain_get_cpu_usage() for
> > both domains, which is (an exerpt from the whole run, in 3
> > second intervals):
> >
> > cpu0: [100.4] d0-0[100.4]
> > cpu2: [045.1] d1-0[045.1]
>
> OK, so you're confident idle time would be reported OK if there was any.
>
> > > Is the Ethernet NIC sharing an interrupt with the USB
> >
> > controller per
> >
> > > chance?
> >
> > Not as far as I can tell:
> >
> > CPU0
> > 11: 6764395 Phys-irq ohci_hcd
> > 24: 6037311 Phys-irq eth0
> > 260: 1688517 Dynamic-irq vif1.0
>
> Anyone care to suggest hy ohci_hcd is taking so many interrupts? Looks
> very fishy to me. I take it you're not using a USB Ethernet NIC? :-)
The bladecenters have a shared USB connected to all the blades. I would
imagine it is the keyboard/mouse or USB CDROM connected to this bus that is
generating all of these interrupts.
> What happens if you boot 'nousb' ?
This shouldn't hurt anything, unless Andrew needs access to kdb or cdrom.
Thanks,
Jon
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