Re: Lossy interrupts on x86_64

From: Thomas Gleixner
Date: Mon Sep 17 2007 - 15:18:43 EST



On Mon, 2007-09-17 at 12:13 -0700, Jesse Barnes wrote:
> On Wednesday, September 12, 2007, Thomas Gleixner wrote:
> > does it make any difference when you boot the box with:
> >
> > nohz=off
> >
> > on the kernel command line ?
>
> Yeah, that makes a difference: the box hangs when I start receiving
> vblank interrupts instead. However it's not a hard hang, I think X
> just becomes unresponsive. I can still hit the power button on the
> laptop and the machine shuts down gracefully, but ctl-alt-delete and
> ctl-alt-backspace don't work. So X is probably still up and in charge
> of input but may not be getting any more timeslices or something.

Eeek, that sounds scary. Can you add "highres=off" as well ?

tglx


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