Re: Strange system behavior

[Paul Goyette <paul%whooppee.com@localhost>]

On Sat, 25 Sep 2010, Manuel Bouyer wrote:

> > Since Monday, I have now replaced the entire system, excepting only
> > the physical case and fans!  Yes, new power supply, new motherboard,
> > new RAM, and new CPU.  I even replaced the hard drive and
> > reinstalled NetBSD!  And the darned system STILL fails, in exactly
> > the same manner.
>
> Is the CPU and motherboard of the same brand as the previous one ?

Yes.  AMD Phenom-II X6 CPU (model 1090T @ 3.2GHz) and ASUS motherboard.

HOWEVER,

I have two other systems with the same CPU and similar ASUS mobo.  One 
of these other systems is my primary build-server.  The motherboards 
differ only in detail features:

        #1 - M4A88TD-V EVO/USB3
        #2 - M4A88TD-M
        #3 - M4A88T-M

#1 is my main build server, and although it does occassionally run into 
an unexpected segmentation fault, it has never been repeatable, and it 
has never been consistent routinely run "build.sh -j12" on this machine.

#2 is my primary workhorse machine (mail server, etc.), and has a 
slightly slower CPU - Phenom-II X6 1065T @ 2.8HGz, and has never shown 
any oddness.

#3 is the dedicated build-and-testbed that I'm trying to get set up. 
(The intent is to repeatedly build and atf-test on a more-or-less 
continuous basis.)  #3 is where I'm having such great difficulty.

Two of my other machines have Intel CPUs and neither has shown any 
tendency to seg-fault:

        #4 - Core2 Quad on XFX nForce 790i Ultra motherboard
        #5 - Core i7    on ASUS P6T

My final machine has a SuperMicro H8QG6i-F motherboard, with only one of 
the four CPU sockets populated (with a AMD opteron 6172 12-core running 
at 2.1GHz).  It has various problems, at least some due to BIOS issues 
(the BIOS reports, via acpi, 3 ioapic's even though there are only two, 
etc...).



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