Okay, we have a couple of people running stable Lombards with
more than 64 MB.
On the other hand, we have people having hard freezes with
Lombard and Pismos even with 64 MB.
So my analysis is as follows:
High bus speed (400 Mhz) seems to be necessary to trigger this hard
freeze.
More memory makes it more likely for hard freezes to appear.
If there is a problem with the memory it is more likely that it is with the
original 64 MB.
Is there somebody out there having a >=400 Mhz Lombard
and Pismo who is _not encountering hard freezes_ under high pressure?
(Preferably with more that 64MB. Because I never got the hard freeze
when I only used 64MB with the mem=64MB switch.)
It might as well be a design problem of the Powerbooks. Can any of the
hardware kernel hackers comments on the differences in architecture
for powerbooks and the other G3s? Maybe a linux driver is written sloppy
in this area not taking in account how the hardware actually works?
Bernhard
ps.: Just I reminder: I am not subscribed ot the list.
On Wed, May 24, 2000, Bernhard Reiter [off-list ref] wrote:
It might as well be a design problem of the Powerbooks. Can any of the
hardware kernel hackers comments on the differences in architecture
for powerbooks and the other G3s? Maybe a linux driver is written sloppy
in this area not taking in account how the hardware actually works?
The Lombard PowerBook uses the same architecture as the first generation
iMacs (and this same memory controller is also used on the beige and B&W
G3s at least). If there is a problem, it's either a memory controller
problem (bogus revision ? incorrect setup ?), or a specific issue with
the design of the memory connector/logic.
The Pismo uses the same chipset as the new iMacs, G4s (sawtooth) and iBook.
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Is there somebody out there having a >=400 Mhz Lombard
and Pismo who is _not encountering hard freezes_ under high pressure?
(Preferably with more that 64MB. Because I never got the hard freeze
when I only used 64MB with the mem=64MB switch.)
Hi Bernhard,
we have a Lombard, 333 MHz, 320 MB Ram, and two Pismo's, 500 MHz, 384 MB
Ram each, and all run without any problems with LinuxPPC 2000, but with
the kernel upgraded to 2.2.15pre20. I ran the HINT benchmark on all
machines (which should be some kind of high pressure), and a colleague ran
data reduction software on one of the PISMO's (high preasure, too).
Again, no problems/freezes yet (which, as I hope, will last.. ;-)
Yours, Albrecht.
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