http://bugzilla.kernel.org/show_bug.cgi?id=15540
Summary: CPU throttling is not supported on Intel Clarkdale and
Arrandale CPUs (i3/i5/Pentium G6950)
Product: ACPI
Version: 2.5
Kernel Version: 2.6.34
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Power-Processor
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
cd /proc/acpi/processor/CPU0/
$ cat limit
<not supported>
$ cat throttling
<not supported>
$ cat info
cat info
processor id: 0
acpi id: 1
bus mastering control: no
power management: yes
throttling control: no
limit interface: no
$ cat power
active state: C0
max_cstate: C8
maximum allowed latency: 2000000000 usec
states:
C1: type[C1] promotion[--] demotion[--] latency[001]
usage[00048959] duration[00000000000000000000]
C2: type[C2] promotion[--] demotion[--] latency[017]
usage[05494543] duration[00000000079458708139]
C3: type[C3] promotion[--] demotion[--] latency[017]
usage[02380836] duration[00000000019023787530]
My CPU:
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 37
model name : Intel(R) Core(TM) i5 CPU 650 @ 3.20GHz
stepping : 2
cpu MHz : 1200.000
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 11
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 pni
pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1
sse4_2 popcnt aes lahf_lm ida arat tpr_shadow vnmi flexpriority ept vpid
bogomips : 6626.47
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
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