> Got into trouble when running a 2.4.23 SMP kernel on a Sparc 20-MP.
> Anybody out there any idea about this ?

Well, there are still some quirks (most of them spinlocks, it seems) in 2.4
kernels on sparc32/smp. But I have at three SS10/20-SMP boxes (dual SM61,
SM71, SM81) that regularly reach uptimes over 100 days:

 10:16pm  up 101 days, 10:38,  1 user,  load average: 0.20, 0.17, 0.11

Linux dpa2.computerbild.de 2.4.20-2.31sparc #1 Wed Sep 24 18:10:45 EDT 2003
sparc unknown

cpu             : Texas Instruments, Inc. - SuperSparc-(II)
fpu             : SuperSparc on-chip FPU
promlib         : Version 3 Revision 2
prom            : 2.12
type            : sun4m
ncpus probed    : 1
ncpus active    : 1
BogoMips        : 59.80
MMU type        : TI Viking/MXCC
contexts        : 65536
nocache total   : 2097152
nocache used    : 513280

That's with Aurora 1.0 from http://auroralinux.org and a modest load.

Ingo


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