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Subject: Re: Large backwards time steps panic 2.5.73
From: john stultz <johnstul@us.ibm.com>
To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@digeo.com>
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On Tue, 2003-06-24 at 13:07, James Bottomley wrote:
> On Tue, 2003-06-24 at 14:50, john stultz wrote:
> > On Tue, 2003-06-24 at 09:26, James Bottomley wrote:
> > > The above trace is from a HP PA-RISC machine running 2.5.73-pa1.
> > 
> > Hmm. Odd. What is the HZ frequency on this machine? 
> 
> On the kernel with the panic, 100.  If I build a 64 bit kernel (which I
> haven't done for .73 yet) I'll get 1000

Ok I'd be curious if it occurs there as well

The only bits the patch should touch are used in adjtimex, and adjtimex
is very limited on how much it can adjust time. If you're a year off or
whatever, its more likely ntpdate is calling stime/settimeofday. 

Could you boot w/o ntp starting up, then manually run  "ntpdate -b
<server>" to see if that causes it as well? 

thanks
-john


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