08-10-2019
I wonder if its not to do with some untested hardware issue since apple using intel processors seem to have changed regularly the inners, things less current when under powerPC ( I still have 2 of them...). I am trying to figure out what in high sierra can make my powerbook pro of 2011 over heat... ( because I burnt my motherboard (graphics...) beginning July ) or go berserk from time to time, I have just assembled a new one but this time a late 2011 motherboard after buying a 2012 for later usage, and again it reaches over 40 C after 15 minutes not doing anything special, the 2012 is already in mojave but so far not much time to play with as still sick and just finished a 3 weeks antibiotics treatment... but into as I dont know anything about the inners of the Mac Pro and mac mini but if like the laptops I would not be surprised... Not insisting for now as we have a heat wave passing just now and was 34C yesterday ( last time it was 36C here...) Monday 25C announced so I will try again...
AS now Im using my wife's ( my ex-hospital usage laptop...) Macbook air which is now under Mojave and am surprised that it stays cool doing exactly the same thing and yes it does heat when I start heavy usage but never like the Macbook pro which can exceed 45 after only 15 minutes when I use it seriously...
My idea was to investigate on the heating control, could it be faulty for my old HW and so not reacting in time? as like you before burning it did crash a few times without to me any reason and I could not see anything in the logs explaining except a panic but can't find the cause...
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LEARN ABOUT DEBIAN
cpuburn
cpuburn(1) cpuburn(1)
NAME
cpuburn, burnBX, burnK6, burnK7, burnMMX, burnP5, burnP6 - a collection of programs to put heavy load on CPU
SYNOPSIS
burnBX
burnK6
burnK7
burnMMX
burnP5
burnP6
DESCRIPTION
These programs are designed to load x86 CPUs as heavily as possible for the purposes of system testing ("burn in"). They have been opti-
mized for different processors. FPU and ALU instructions are coded in an assembler endless loop. They do not test every instruction. The
goal has been to maximize heat production from the CPU, putting stress on the CPU itself, cooling system, motherboard (especially voltage
regulators) and power supply (likely cause of burnBX/burnMMX errors). The programs produce no output, but signal hardware errors by a
return code or (more likely) your machine locking up.
burnP5 is optimized for Intel Pentium with or without MMX CPUs
burnP6 is optimized for Intel PentiumPro, Pentium II & III CPUs
burnK6 is optimized for AMD K6 CPUs
burnK7 is optimized for AMD Athlon/Duron CPUs
burnMMX tests cache/memory interfaces on all CPUs with MMX
burnBX is an alternate cache/memory test for Intel CPUs
USAGE
Burn testing is designed to make your computer glitch if it has hardware problems, so make sure that nothing critical is running and all
critical data is saved back to the hard-drives. The best is to run it with filesystems mounted read-only. Note that root privileges are
not required.
Run the desired program in the background, checking the error result. You'll may want to repeat this command for every processor you have
in an SMP or HyperThreading system. For example,
burnP6 || echo $? &
Monitor progress of cpuburn by ps. You can monitor CPU temperature and/or system voltages through ACPI or using the lm-sensors package if
you system supports it. When finished, kill the burn* process(es). For example,
killall burnP6
BUGS
Report all bug to submit@bugs.debian.org, for more information visit http://bugs.debian.org
AUTHORS
cpuburn was written by Robert Redelmeier <redelm@ev1.net>
June 04, 2011 cpuburn(1)