CPU C-state storange on Panasonic TOUGH BOOK CF-R9

[Alexander Motin]

Andriy Gapon wrote:
> acpi_lid0: Lid closed
> em0: Link is up 1000 Mbps Full Duplex
> PROCESSOR-0722 [402244] cpu_cx_cst            : acpi_cpu0: Got C2 - 245 latency
> PROCESSOR-0722 [403097] cpu_cx_cst            : acpi_cpu1: Got C2 - 245 latency
> PROCESSOR-0722 [403855] cpu_cx_cst            : acpi_cpu2: Got C2 - 245 latency
> PROCESSOR-0722 [405022] cpu_cx_cst            : acpi_cpu3: Got C2 - 245 latency
> 
> Maybe because of this?
> It seems like you do something and ACPI disables C3, leaving only C2/

One strange thing. During boot it can be seen:
acpi_cpu0: Got C2 - 205 latency
acpi_cpu0: Got C3 - 245 latency
, but after boot in sysctl we can see:
dev.cpu.0.cx_supported: C1/3 C2/245

It respecting latency it looks like not C3 got lost, but C2. AFAIR,
sysctl numbers C-states completely abstract, just as array indexes. So
thing reported as C2 could instead be C3, while C2 is absent for some
reason.

-- 
Alexander Motin