Debian CPU heating up <no apparent cpu activity>
Hi,
I am trying to create 2 systems (both are portable and works on USB)
1. USB<->SATA bridge SSD with linux kernel 3.19.0 (self compiled).
this systems works fine and the operating temperature on the DELL
machine I am using is about 54C to 60C
2. USB<->microSD with MicroSD card (sandisk 32GB).
this system when it works starts heating up !!! temperatures sore
to 80C.(in a matter of 2-3 minutes)
BASE CONDITIONS (common for both systems):
* Both the systems are jessie
* Both are running idential kernel and initrd (infact exact binary
copies on both)
* top shows very low CPU utilisation
* iotop shows occasional R/W but not too much of write/read (less
than 0.1 kb/sec)
* both are currently text mode only
* system is DELL Q15R core-i7-2630QM (see cpuinfo in the end)
on SSD: vmstat
0 0 0 7003648 44012 896832 0 0 0 12 157 583 1
0 99 0 0
0 0 0 7003532 44012 896840 0 0 0 0 136 429 0
0 100 0 0
0 0 0 7003760 44012 896840 0 0 0 0 205 510 0
0 100 0 0
0 0 0 7003904 44012 896840 0 0 0 0 152 513 0
0 100 0 0
(using graphics and so sligtly low in mem but this is on the system
which does not heat up)
on SDCARD: vmstat
0 0 0 7935012 20884 184812 0 0 0 0 110 313 0
0 100 0 0
0 0 0 7935012 20884 184812 0 0 0 0 97 286 0
0 100 0 0
0 0 0 7935012 20884 184812 0 0 0 0 99 275 0
0 100 0 0
0 0 0 7935012 20884 184812 0 0 0 0 103 280 0
0 100 0 0
0 0 0 7934864 20892 184804 0 0 0 20 176 470 0
0 100 0 0
I even applied all CPU microcodes and got the message
perf_event_intel: PEBS enabled due to microcode update
Has someone encountered this before ? I am not sure what is causing
the fans to run fast and CPU to heatup when I use the OS on SD card ?
I agree SD is slow but that will be IO rather than CPU right ? will
that cause heatup ?
iotop also shows READ/WRITE only occasionally SSD for
I am fully exhausted not kwowing what to do. Can anyone help please ?
-------------------- CPU INFO -----------------------
processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz
stepping : 7
microcode : 0x29
cpu MHz : 1900.000
cache size : 6144 KB
physical id : 0
siblings : 8
core id : 3
cpu cores : 4
apicid : 7
initial apicid : 7
fdiv_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm
constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf
eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16
xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes
xsave avx lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid xsaveopt
bugs :
bogomips : 3990.87
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
Reply to: