Re: 2.6.18-rt1

Dipankar Sarma
2006-10-13T22:16:49Z

On Fri, Oct 13, 2006 at 06:12:16PM -0400, Lee Revell wrote:
> On Sat, 2006-10-14 at 02:54 +0530, Dipankar Sarma wrote:
> > Can you try with nmi_watchdog=0 in the kernel command line ?
> >
> > Paul has an NMI-safe patch for rcupreempt which I am adopting
> > and testing at the moment. If this works well, I will publish
> > a new patchset.
> >
>
> The bug is too hard to hit for me to provide useful feedback. I've only
> seen it once since my original report.
>
> FWIW, I am also seeing hard lockups every 12-24 hours but the box is
> headless and I don't have the bandwidth to debug these further. It was
> stable with 2.6.17-rt*.

Can you try whatever you were doing with nmi_watchdog=0 ? If it is
stable, then that would explain the problem. I believe Andi enabled
nmi watchdog on x86_64 by default recently, that might be why
we are seeing it now.

Thanks
Dipankar