Re: Memory/data errors

On Sun, 18 Mar 2018 13:40:26 -0700
John Nemeth <[email protected]> wrote:

> On Mar 18,  2:26pm, Sad Clouds wrote:
> }
> } Hello, I've been seeing various errors and kernel hangs with
> NetBSD-8 } on Sun Ultra 10. This is a rather old machine, so I'm
> assuming hardware } is starting to fail, etc. I did run max
> diagnostics at openboot and it } didn't find any issues.
> } 
> } Normally, I would run NetBSD build.sh and sooner or later GCC would
> } segfault, or kernel would hang. I was also seeing the following
> errors
> 
>      GCC is an excellent memory tester.  It apparently exercises
> RAM very intensely, so this is often an indicator that you have
> bad RAM.
> 
> }-- End of excerpt from Sad Clouds

Not just bad RAM, this machine was built 20 years ago, every component
on the mainboard is a suspect.

OpenBoot has memory tests where it writes/reads various data patterns,
not sure how extensive those tests are, but I ran them about 5 times
and they didn't find any issues.