reading a file in emacs crashes 2.4.17 and 18-pre4

reading a file in emacs crashes 2.4.17 and 18-pre4

[John Covici]

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Its a small file and was actually an accident, but you get all sorts
of unable to handle kernel paging ... and eventually a kernel panic
because it was trying to kill the idle process.

I am using emacs version "21.2.50.1" and I have 1.4ghz Athlon and 256
m of memory.


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-- 
         John Covici
         covici@ccs.covici.com

Re: reading a file in emacs crashes 2.4.17 and 18-pre4

[John Covici]

Well, I have worked around this problem by getting rid of the Athlon
optimizations so I guess there is still more work to do on those.

on Mon, 21 Jan 2002 21:28:47 -0500 John Covici <covici@ccs.covici.com> wrote:

> Its a small file and was actually an accident, but you get all sorts
> of unable to handle kernel paging ... and eventually a kernel panic
> because it was trying to kill the idle process.
>
> I am using emacs version "21.2.50.1" and I have 1.4ghz Athlon and 256
> m of memory.

-- 
         John Covici
         covici@ccs.covici.com

Re: reading a file in emacs crashes 2.4.17 and 18-pre4

[Eli Zaretskii]

On Wed, 23 Jan 2002, John Covici wrote:

> Well, I have worked around this problem by getting rid of the Athlon
> optimizations so I guess there is still more work to do on those.

Could you please tell what did you change, exactly?  It might be that 
this information should be in etc/PROBLEMS, in case other users bump into 
the same problem.

Re: reading a file in emacs crashes 2.4.17 and 18-pre4

[John Covici]

I reconfigured my kernel to lie to it and say k6 for the processor
family instead of k7.

On Wed, 23 Jan 2002, Eli Zaretskii wrote:

>
> On Wed, 23 Jan 2002, John Covici wrote:
>
> > Well, I have worked around this problem by getting rid of the Athlon
> > optimizations so I guess there is still more work to do on those.
>
> Could you please tell what did you change, exactly?  It might be that
> this information should be in etc/PROBLEMS, in case other users bump into
> the same problem.
>

-- 
         John Covici
         covici@ccs.covici.com

Re: reading a file in emacs crashes 2.4.17 and 18-pre4

[Mark Hahn]

> I reconfigured my kernel to lie to it and say k6 for the processor
> family instead of k7.

right.  and just for posterity, let me note here that 
the K7-specific kernel code IS NOT KNOWN TO BE BUGGY.

the best and so far only explanation is that since CONFIG_MK7 
can *triple* the bandwidth that Linux demands of dram, 
marginal hardware is pushed over the edge.  stable hardware
has no problem with the code, and the code follows AMD's specs.

turning off the optimizations is just de-tuning the kernel
to pander to (work around) flakey hardware.

> > > Well, I have worked around this problem by getting rid of the Athlon
> > > optimizations so I guess there is still more work to do on those.
> >
> > Could you please tell what did you change, exactly?  It might be that
> > this information should be in etc/PROBLEMS, in case other users bump into
> > the same problem.