Differing clock speeds on Sparcs?
wilson.h.bent..jr
whb at cbnewsi.ATT.COM
Wed Nov 8 01:04:36 AEST 1989
In article <2623 at brazos.Rice.edu> brsmith at cs.umn.edu (Brian R. Smith) writes:
>We have 12 SparcStation 1's with nearly identical configurations. BUT, as
>was pointed out by one of our users, 3 of them are slower than the rest.
>Here's an example [ highly edited ]
>atto: 2.6 real 2.4 user 0.1 sys
>deca: 4.0 real 3.8 user (!) 0.1 sys
We had a similar problem; it turned out that the slower machines had
earlier revisions of CPU boards. No, I don't remember the rev. numbers,
but if it helps, I've got the machine's serial numbers:
Slow: 925F3928 926F0832
Fast: 926F0854 926F0893
This is based on experience; we complained about our slow machines, Sun
sent us newer-rev CPU boards (which we installed - easy!), and they turned
into fast machines.
Side note: from what I understand, serial numbers can be decoded thusly:
925F3928
^^ ^^----- "real" serial number (sequence number)
|| +------ Manufacturing location? Not sure.
|+-------- Week-of-year (here, 25)
+--------- Year minus 1980 (here, 1989)
So from our machines, it looks as though somewhere between #832 and #854
they started using a new, faster CPU board. If you're still under
warranty or have hardware support, you're in luck. Otherwise...
Wilson H. Bent, Jr. ... att!hoh-2!whb (whb at hoh-2.ATT.COM)
AT&T - Bell Laboratories HOH L-274A
Holmdel, NJ 07733 (201) 888-7129
More information about the Comp.sys.sun
mailing list