Comments (1)
The i7z_rw_registers
tool correctly determines the architecture, however:
$ sudo ruby i7z_rw_registers.rb
This script is totally experimental
use it in superuser mode to get access to r/w access
also i need msr-tools installed so that rdmsr and wrmsr can work in sudo
write quit or ctrl+C to exit
Now for the blurb on why you might find this script useful:
Throttling cpu on battery is one place, some machines including W520
have a wierd bios which switches off turbo when machine is booted in
battery or some bios implement throttling even when the power is within limit
and this tool should allow you to manually set the multiplier
Whenever you run a command it will print out what goes in the background
like what registers were read/written etc, this should allow one to even
write different scripts to automatically run specifics multiplier in battery
power and other modes.
msr-tools are needed. Furthermore "modprobe msr" on command line needs to be executed
Do you need help?
Possible commands are
help : which will print this list again
turbo : which examines the turbo status
multiplier : examines the multipliers
power : which prints current wattage of the system
clock : allows for software clock modulation ( a form of throttling )
system : allows to print some system info
quit : which will quit the program or just do ctrl + c
>> system
number of cores 4
trying to distinguish between nehalem/sandy bridge via AVX support... Nehalem
>> quit
exiting, thanks for using
$
from i7z.
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from i7z.