https://bugzilla.kernel.org/show_bug.cgi?id=36182
Martin Mokrejs mmokr...@gmail.com changed:
What|Removed |Added
CC||mmokr...@gmail.com
--- Comment #39 from Martin Mokrejs mmokr...@gmail.com ---
I landed at this thread because I got this message on 3.10.9. However, I
realized during reading this thread it is probably about too many such lines in
syslogs, which is NOT my case. However, as it seems the code was almost dropped
from the kernel, I would like to add my comments.
Seems several reports here are about laptops, actually SandyBridge-based
laptops. I have yet another, i7-2640M. I realized that if I disable my
hyper-threaded cores:
echo 0 /sys/devices/system/cpu/cpu2/online
echo 0 /sys/devices/system/cpu/cpu3/online
that my singlethreaded applications run faster (I run two instances just to
fill physical cores). Per i7z tools I was reaching temperatures 95-98 oC while
with all 4 cores enabled it never reached to those temperatures and processing
speed/throughput was lower. disabling the HT-cores had also one other effect.
That the physical cores could have ran at higher boosted speeds, which of
course heated up more the CPU. I would say, that was the right way to test my
cooling.
I was glad kernel reported:
[ 1092.103952] CPU0: Package temperature above threshold, cpu clock throttled
(total events = 1)
[ 1092.103954] CPU1: Core temperature above threshold, cpu clock throttled
(total events = 1)
[ 1092.103957] CPU1: Package temperature above threshold, cpu clock throttled
(total events = 1)
[ 1092.104931] CPU1: Core temperature/speed normal
[ 1092.104933] CPU0: Package temperature/speed normal
[ 1092.104936] CPU1: Package temperature/speed normal
[ 1201.614297] mce: [Hardware Error]: Machine check events logged
[ 1395.598163] CPU1: Core temperature above threshold, cpu clock throttled
(total events = 21680)
[ 1395.598169] CPU1: Package temperature above threshold, cpu clock throttled
(total events = 22191)
[ 1395.598190] CPU0: Package temperature above threshold, cpu clock throttled
(total events = 22191)
[ 1395.599169] CPU1: Core temperature/speed normal
[ 1395.599171] CPU1: Package temperature/speed normal
[ 1395.599176] CPU0: Package temperature/speed normal
[ 1502.016525] mce: [Hardware Error]: Machine check events logged
[ 1698.841500] CPU1: Core temperature above threshold, cpu clock throttled
(total events = 46139)
[ 1698.841503] CPU0: Package temperature above threshold, cpu clock throttled
(total events = 47504)
[ 1698.841506] CPU1: Package temperature above threshold, cpu clock throttled
(total events = 47504)
[ 1698.842526] CPU0: Package temperature/speed normal
[ 1698.842528] CPU1: Core temperature/speed normal
[ 1698.842529] CPU1: Package temperature/speed normal
[ 1952.545072] mce: [Hardware Error]: Machine check events logged
[ 1999.213823] CPU0: Package temperature/speed normal
[ 1999.213826] CPU1: Core temperature/speed normal
[ 1999.213829] CPU1: Package temperature/speed normal
[ 2102.731048] mce: [Hardware Error]: Machine check events logged
[15125.078769] CPU1: Core temperature above threshold, cpu clock throttled
(total events = 1015693)
[15125.078771] CPU0: Package temperature above threshold, cpu clock throttled
(total events = 1048803)
[15125.078776] CPU1: Package temperature above threshold, cpu clock throttled
(total events = 1048803)
[15125.079794] CPU1: Core temperature/speed normal
[15125.079796] CPU0: Package temperature/speed normal
[15125.079798] CPU1: Package temperature/speed normal
[15425.600586] CPU1: Core temperature above threshold, cpu clock throttled
(total events = 1041101)
[15425.600588] CPU0: Package temperature above threshold, cpu clock throttled
(total events = 1075009)
[15425.600593] CPU1: Package temperature above threshold, cpu clock throttled
(total events = 1075009)
[15425.601591] CPU1: Core temperature/speed normal
[15425.601593] CPU0: Package temperature/speed normal
[15425.601596] CPU1: Package temperature/speed normal
[15725.995979] CPU1: Core temperature above threshold, cpu clock throttled
(total events = 1064631)
[15725.995983] CPU0: Package temperature above threshold, cpu clock throttled
(total events = 1099299)
[15725.995986] CPU1: Package temperature above threshold, cpu clock throttled
(total events = 1099299)
[15725.996987] CPU1: Core temperature/speed normal
[15725.996989] CPU0: Package temperature/speed normal
[15725.996991] CPU1: Package temperature/speed normal
[16301.492089] CPU1: Core temperature above threshold, cpu clock throttled
(total events = 1066448)
[16301.492091] CPU0: Package temperature above threshold, cpu clock throttled
(total events = 1101154)
[16301.492096] CPU1: Package temperature above threshold, cpu clock throttled
(total events = 1101154)
[16301.493096] CPU1: Core temperature/speed normal
[16301.493098] CPU0: Package temperature/speed normal
