[REGRESSION] 3.15: Seems to turbo mode Intel Sandybridge Dual Core without need, overheating CPU

[Martin Steigerwald]

Hi!

I get:

Jun  9 22:41:32 merkaba kernel: [39978.006479] CPU0: Package temperature/speed normal
Jun  9 22:41:32 merkaba kernel: [39978.006481] CPU3: Package temperature/speed normal
Jun  9 22:41:32 merkaba kernel: [39978.006482] CPU2: Package temperature/speed normal
Jun  9 22:41:32 merkaba kernel: [39978.006487] CPU1: Package temperature/speed normal
Jun  9 22:44:02 merkaba kernel: [40127.673372] CPU2: Core temperature above threshold, cpu clock throttled (total events = 56554)
Jun  9 22:44:02 merkaba kernel: [40127.673383] CPU3: Core temperature above threshold, cpu clock throttled (total events = 56554)
Jun  9 22:44:02 merkaba kernel: [40127.674313] CPU3: Core temperature/speed normal
Jun  9 22:44:02 merkaba kernel: [40127.674352] CPU2: Core temperature/speed normal
Jun  9 22:45:21 merkaba kernel: [40207.302287] mce: [Hardware Error]: Machine check events logged
Jun  9 22:46:32 merkaba kernel: [40278.054568] CPU0: Package temperature/speed normal
Jun  9 22:46:32 merkaba kernel: [40278.054572] CPU3: Package temperature/speed normal
Jun  9 22:46:32 merkaba kernel: [40278.054574] CPU2: Package temperature/speed normal
Jun  9 22:46:32 merkaba kernel: [40278.054578] CPU1: Package temperature/speed normal
Jun  9 22:48:06 merkaba kernel: [40371.570654] perf interrupt took too long (19348 > 17857), lowering kernel.perf_event_max_sample_rate to 7000
Jun  9 22:51:32 merkaba kernel: [40578.103629] CPU3: Package temperature/speed normal
Jun  9 22:51:32 merkaba kernel: [40578.103633] CPU0: Package temperature/speed normal
Jun  9 22:51:32 merkaba kernel: [40578.103638] CPU2: Package temperature/speed normal
Jun  9 22:51:32 merkaba kernel: [40578.103639] CPU1: Package temperature/speed normal
Jun  9 22:56:32 merkaba kernel: [40878.174734] CPU1: Package temperature above threshold, cpu clock throttled (total events = 152620)
Jun  9 22:56:32 merkaba kernel: [40878.174737] CPU0: Package temperature above threshold, cpu clock throttled (total events = 152620)
Jun  9 22:56:32 merkaba kernel: [40878.174742] CPU3: Package temperature above threshold, cpu clock throttled (total events = 152620)
Jun  9 22:56:32 merkaba kernel: [40878.174744] CPU2: Package temperature above threshold, cpu clock throttled (total events = 152620)
Jun  9 22:56:32 merkaba kernel: [40878.176744] CPU3: Package temperature/speed normal
Jun  9 22:56:32 merkaba kernel: [40878.176746] CPU2: Package temperature/speed normal
Jun  9 22:56:32 merkaba kernel: [40878.176748] CPU1: Package temperature/speed normal
Jun  9 22:56:32 merkaba kernel: [40878.176749] CPU0: Package temperature/speed normal
Jun  9 22:59:11 merkaba kernel: [41037.278705] CPU3: Core temperature/speed normal
Jun  9 22:59:11 merkaba kernel: [41037.278707] CPU2: Core temperature/speed normal
Jun  9 23:01:32 merkaba kernel: [41178.225837] CPU2: Package temperature above threshold, cpu clock throttled (total events = 177343)
Jun  9 23:01:32 merkaba kernel: [41178.225841] CPU0: Package temperature above threshold, cpu clock throttled (total events = 177343)
Jun  9 23:01:32 merkaba kernel: [41178.225843] CPU3: Package temperature above threshold, cpu clock throttled (total events = 177343)
Jun  9 23:01:32 merkaba kernel: [41178.225845] CPU1: Package temperature above threshold, cpu clock throttled (total events = 177343)
Jun  9 23:01:32 merkaba kernel: [41178.237850] CPU1: Package temperature/speed normal
Jun  9 23:01:32 merkaba kernel: [41178.237853] CPU2: Package temperature/speed normal
Jun  9 23:01:32 merkaba kernel: [41178.237855] CPU0: Package temperature/speed normal
Jun  9 23:01:32 merkaba kernel: [41178.237856] CPU3: Package temperature/speed normal
Jun  9 23:01:36 merkaba kernel: [41182.452403] mce: [Hardware Error]: Machine check events logged
Jun  9 23:06:32 merkaba kernel: [41478.291923] CPU1: Package temperature above threshold, cpu clock throttled (total events = 204756)
Jun  9 23:06:32 merkaba kernel: [41478.291926] CPU0: Package temperature above threshold, cpu clock throttled (total events = 204756)
Jun  9 23:06:32 merkaba kernel: [41478.291946] CPU3: Package temperature above threshold, cpu clock throttled (total events = 204756)
Jun  9 23:06:32 merkaba kernel: [41478.291950] CPU2: Package temperature above threshold, cpu clock throttled (total events = 204756)
Jun  9 23:11:32 merkaba kernel: [41778.341992] CPU3: Package temperature/speed normal
Jun  9 23:11:32 merkaba kernel: [41778.341995] CPU0: Package temperature/speed normal
Jun  9 23:11:32 merkaba kernel: [41778.341996] CPU1: Package temperature/speed normal
Jun  9 23:11:32 merkaba kernel: [41778.341997] CPU2: Package temperature/speed normal


And this:

merkaba:~> sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +96.0°C  (crit = +98.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +98.0°C  (high = +86.0°C, crit = +100.0°C)
Core 0:         +96.0°C  (high = +86.0°C, crit = +100.0°C)
Core 1:         +96.0°C  (high = +86.0°C, crit = +100.0°C)

thinkpad-isa-0000
Adapter: ISA adapter
fan1:        3580 RPM

merkaba:~> acpi -t
Thermal 0: ok, 96.0 degrees C


On

martin@merkaba:~> phoronix-test-suite system-info

Phoronix Test Suite v4.8.3
System Information

Hardware:
Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO 42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 8192MB, Disk: 300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel HD 3000 (1300MHz), Audio: Intel 6 /C200, Network: Intel 82579LM Gigabit Connection + Intel Centrino Advanced-N 6205

Software:
OS: Debian unstable, Kernel: 3.15.0-tp520 (x86_64), Desktop: KDE 4.13.1, Display Server: X Server 1.15.1, Display Driver: intel 2.21.15, OpenGL: 3.1 Mesa 10.1.4, Compiler: GCC 4.8, File-System: btrfs, Screen Resolution: 1920x1080


during playing PlaneShift with Intel gfx.


I get the impression that Intel P-State driver turbo modes all of the cores
needlessly *and* permanently once this condition is triggered. Usually
temperature is just about 55-60 degree celsius. But not at maximum.


I see this:

merkaba:/sys/devices/system/cpu> grep . cpu[0-3]/cpufreq/cpuinfo_cur_freq
cpu0/cpufreq/cpuinfo_cur_freq:3015917
cpu1/cpufreq/cpuinfo_cur_freq:3008984
cpu2/cpufreq/cpuinfo_cur_freq:3000000
cpu3/cpufreq/cpuinfo_cur_freq:3000000


Without that much work to do:

merkaba:~> mpstat -P ALL 10
Linux 3.15.0-tp520 (merkaba)    09.06.2014      _x86_64_        (4 CPU)

23:21:42     CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle
23:21:52     all   15,61    0,00    2,68   10,33    0,15    0,00    0,00    0,00    0,00   71,23
23:21:52       0   25,70    0,00    4,22   22,59    0,30    0,00    0,00    0,00    0,00   47,19
23:21:52       1   20,02    0,00    1,80   14,71    0,10    0,00    0,00    0,00    0,00   63,36
23:21:52       2   10,14    0,00    2,61    3,01    0,10    0,00    0,00    0,00    0,00   84,14
23:21:52       3    6,63    0,00    2,11    0,80    0,10    0,00    0,00    0,00    0,00   90,36

23:21:52     CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle
23:22:02     all   14,19    0,00    2,26   10,93    0,13    0,00    0,00    0,00    0,00   72,50
23:22:02       0   32,26    0,00    4,01   31,86    0,20    0,00    0,00    0,00    0,00   31,66
23:22:02       1   12,11    0,00    1,30    8,51    0,10    0,00    0,00    0,00    0,00   77,98
23:22:02       2    8,12    0,00    2,21    2,91    0,10    0,00    0,00    0,00    0,00   86,66
23:22:02       3    4,31    0,00    1,60    0,40    0,10    0,00    0,00    0,00    0,00   93,59

23:22:02     CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle
23:22:12     all   25,33    0,03    2,63    9,00    0,15    0,00    0,00    0,00    0,00   62,87
23:22:12       0   35,71    0,00    4,01   19,56    0,20    0,00    0,00    0,00    0,00   40,52
23:22:12       1   27,43    0,00    1,90   10,61    0,20    0,00    0,00    0,00    0,00   59,86
23:22:12       2   22,14    0,10    2,40    4,41    0,10    0,00    0,00    0,00    0,00   70,84
23:22:12       3   15,96    0,10    2,21    1,41    0,10    0,00    0,00    0,00    0,00   80,22

23:22:12     CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle
23:22:22     all   27,90    0,03    3,94    8,87    0,33    0,00    0,00    0,00    0,00   58,94
23:22:22       0   36,77    0,00    5,81   20,74    0,90    0,00    0,00    0,00    0,00   35,77
23:22:22       1   28,99    0,00    2,41   10,13    0,10    0,00    0,00    0,00    0,00   58,38
23:22:22       2   25,48    0,00    3,81    3,21    0,20    0,00    0,00    0,00    0,00   67,30
23:22:22       3   20,34    0,00    3,71    1,40    0,20    0,00    0,00    0,00    0,00   74,35



Will reboot now to see whether it resets that condition. Didn´t happen during the whole
day.

But seems to happen after a while of playing PlaneShift.

Any hints?

Thanks,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7
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