[cobalt-developers] [cobalt-users] Memory testing and Rom utils

["josh" <josh@xxxxxxxxxxxxxxxxxx>]

I just decided to try again to figure out what went wrong with my xtr.
I still haven't figured out the cause of my memory/swap problems with
going from a RaQ XTR to a 550.  I would like advice on what to do to
get my XTR back in operation. The first thing I'd like to do is make
sure that all the rom reading utilities report the correct disk and
memory configuration. The machine crashes where it should have swapped
memory. I haven't tested with the lastest kernel. As it is not in
production, but rather sitting on my desk (and a noisy sucker it is) I
can turn it off, remove memory or disks etc. with no inconvenience. It
has 2G RAM. It also seems to have problems with the console - I have
had terminals attached, though not lately, and only was able to
read,not enter data or log in. So perhaps there was some hardware
problem.

I decided to examin and concentrate on determining if the memory is a
1. ROM problem ( From some notes on some of Tim Hockin's pages I feel
I should either be at 2.8.x or 2.10.x - not sure which.) I downloaded
some of the romutils to read and right the roms but I don't know where
such things as the amount of RAM is stored or detected.

   [josh josh]$ sudo /usr/sbin/cmos -c romrev
   2.9.34

2. Memory Chip Problem
  
   I added two chips from crucial which should have brought my machine
   to 2G (from 1G). The two gig show up fine in top - the memory test
   is below.


3. 550 Kernel in an XTR problem

   I am convinced that there are problems with the 550 OS on an XTR,
	 but I'm not sure they are in the kernel. I haven't tried any
	 experimental or custom kernels. While I have built kernels for
	 machines previously, I alway did it by mindlessly following the
	 instructions of others.

I had downloaded the memtest package and let it run last night.

[josh josh]$ sudo /usr/local/sbin/memtest 2G -l
memtest v. 2.93.1
(C) 2000 Charles Cazabon <memtest@xxxxxxxxxxxxxxxxxxxx>
Original v.1 (C) 1999 Simon Kirby <sim@xxxxxxxxxxx> <sim@xxxxxxxxx>

Current limits:
  RLIMIT_RSS  0x7fffffff
  RLIMIT_VMEM 0x7fffffff
Raising limits...
Unable to malloc 2147483648 bytes.
Unable to malloc 2143289344 bytes.
.
.   (this went one at about 1M each try until)
.
Unable to malloc 555745280 bytes.
Unable to malloc 554696704 bytes.
Allocated 553648128 bytes...trying mlock...success.  Starting tests...

Testing 553644032 bytes at 0x40301000 (4088 bytes lost to page
alignment).

Run    1:
  Test  1:         Stuck Address:  Testing...Passed.
  Test  2:          Random value:  Setting...Testing...Passed.
  Test  3:        XOR comparison:  Setting...Testing...Passed.
  Test  4:        SUB comparison:  Setting...Testing...Passed.
  Test  5:        MUL comparison:  Setting...Testing...Passed.
  Test  6:        DIV comparison:  Setting...Testing...Passed.
  Test  7:         OR comparison:  Setting...Testing...Passed.
  Test  8:        AND comparison:  Setting...Testing...Passed.
  Test  9:  Sequential Increment:  Setting...Testing...Passed.
  Test 10:            Solid Bits:  Testing...Passed.
  Test 11:      Block Sequential:  Testing...Passed.
  Test 12:          Checkerboard:  Testing...Passed.
  Test 13:            Bit Spread:  Testing...Passed.
  Test 14:              Bit Flip:  Testing...Passed.
  Test 15:          Walking Ones:  Testing...Passed.
  Test 16:        Walking Zeroes:  Testing...Passed.
Run    1 completed in 5324 seconds (0 tests showed errors).

-- 
Josh Kuperman                       
josh@xxxxxxxxxxxxxxxxxx

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