em interrupt storm

[Kris Kennaway]

On Thu, Nov 24, 2005 at 09:02:35AM +0100, Massimo Lusetti wrote:
> On Wed, 2005-11-23 at 16:15 -0700, Scott Long wrote:
> 
> > What I've done is vacated the use of irq16 on my machines by disabling
> > things like usb and if_em.  This isn't ideal, of course.  The storming
> > doesn't usually cause a problem, but it can affect performance,
> > especially if USB is involved.  I only do this when I'm testing
> > performance, otherwise I leave everything enabled and don't worry about
> > it.  4.x won't see this problem since it handles interrupts in the
> > more traditional way, but using 4.x also has many other tradeoffs that
> > may or may not be worthwhile.
> 
> That's good to hear. Thanks for pointing it out Scott.

As I mentioned in another reply, I do see a similar interrupt storm on
the same hardware running 4.11.

Kris

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