Re: Interrupt storm mitigation needed

[Thor Lancelot Simon <tls%panix.com@localhost>]

On Thu, Feb 12, 2015 at 07:52:10PM +0100, Tom Ivar Helbekkmo wrote:
> Tom Ivar Helbekkmo <tih%hamartun.priv.no@localhost> writes:
> 
> > The uhci pins on the ioapics are chalking up a few interrupts, but not
> > many, and no bursts.
> 
> Still nothing bad happening, but I did reboot just now, and saw
> something that I've observered a few times lately: when the machine was
> just sufficiently up that I could log in, 'vmstat -i' told me that the
> ioapic pin for uhci2 had already generated slightly more than 210000
> interrupts.

I guess the next question would then be whether, with uhci in polled mode,
we can safely mask that pin.

Thor