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Re: sparc buildd issues [Re: Release candidate architecture requalification results; amd64 is RC]





On 12/27/05, Josip Rodin <joy-sparc@debian.org > wrote:
What is this kernel problem, how does it manifest? Which branch, 2.4 or 2.6?

I don't know if this is the same problem you're looking for, but here are the symptoms I've seen for kernels 2.6.11 and 2.6.12:

On a Sparc netra X1, the system partially freezes (some stuff continues running but at least one of the operations necessary to log in gets stuck). The logs show that as of the moment of the freeze, the clock has jumped forward exactly 3 days, 6 hours,
11 minutes and 15 seconds. The change is not gradual; it jumps between syslog marks set a minute apart.

This happens intermittantly. I can't force it to reproduce. With a system under moderate load it will happen within 10 days. Under light load it happens within 30 days. The problem doesn't happen under Debian's 2.6.8.2, or at least it hasn't in the 40 days since I switched back to it, which is longer than between any of the dozen prior freezes.

The freeze ups don't correlate with any particular activity on the system. Nothing is schedule to run and with only Bind on the machine there there isn't much of an opportunity for it to be put under external load.

$ cat /proc/cpuinfo
cpu             : TI UltraSparc IIe (Hummingbird)
fpu             : UltraSparc IIe integrated FPU
promlib         : Version 3 Revision 0
prom            : 4.0.6
type            : sun4u
ncpus probed    : 1
ncpus active    : 1
Cpu0Bogo        : 794.62
Cpu0ClkTck      : 0000000017d78400
MMU Type        : Spitfire
$ free
             total       used       free     shared    buffers     cached
Mem:        513064     408600     104464          0     101904     218800
-/+ buffers/cache:      87896     425168
Swap:            0          0          0

Regards,
Bill Herrin

--
William D. Herrin                  herrin@dirtside.com   bill@herrin.us
3005 Crane Dr.                        Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004

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