Subject: Re: 1.6 woes (pmap vs. UBC?)
To: None <port-sparc@netbsd.org>
From: der Mouse <mouse@Rodents.Montreal.QC.CA>
List: port-sparc
Date: 08/08/2002 09:49:03
>> Are other sun4c users really avoiding newer NetBSD? Is that why so
>> few people have encountered this problem?
> It's possible. Remember that this only occurs on older sun4c (the
> ones with "sw flush cache"). IPX and SS2 are fine.
I'm also not sure it's really "newer NetBSD". I've been seeing
occasional spurious userland coredumps on SS1, SS1+, at least one of
{SLC,ELC}, since pre-1.4. They weren't frequent; a "make build" (which
in those days took about a day on such a machine) would usually die,
but only once (restarting would finish the run). When I was using such
a machine as my screen-&-keyboard at work, my X server would die from
it intermittently, probably about once a week average over the long
term. I also once had a picture-display program that did dithering
corrupt a small section of a picture - it appeared that about 8 bytes
had been replaced with random junk.
The most reliable way to reproduce it I found was found serendipitously
when I tried to host a mud on such a machine. I never got it to last
long enough to start accepting connections; it always died during
startup.
I basically just stopped using "older" machines, machines that suffered
from it, so I stopped noticing it. But it isn't new, unless I've
misunderstood the problem.
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