Interrupt storm with MSI in combination with em1

[Jack Vogel]

I don't see why you are blaming em, you can see its on MSIX vectors
that are NOT storming, its something with USB as noted. Trying to
disable em from using MSIX is in exactly the wrong direction IMHO.

Jack


On Fri, May 6, 2011 at 8:32 AM, Daan Vreeken <Daan at vehosting.nl> wrote:

> Hi Steven,
>
> On Friday 06 May 2011 17:20:15 Steven Hartland wrote:
> > From: "Daan Vreeken" <Daan at vehosting.nl>
> >
> > > # vmstat -i
> > > interrupt                          total       rate
> > > irq3: uart1                       917384         63
> > > --> irq16: ehci0                   809547235      55608
> >
> > Have you tried removing USB from the kernel?
> >
> > USB seems to be a common course of this behaviour and here at least
> > removing it from the kernel fixes in all cases assuming you don't
> > need it for something?
>
> No, I haven't tried that yet. I could disable USB to run some tests, but
> I'll
> eventually need it enabled again.
> I'll wait for a couple of hours to see if anyone can come up with a test to
> run on the machine while the interrupt is still storming. After that I'll
> reboot it with USB disabled.
>
>
> Thanks,
> --
> Daan Vreeken
> VEHosting
> http://VEHosting.nl
> tel: +31-(0)40-7113050 / +31-(0)6-46210825
> KvK nr: 17174380
>