amdmsrt (amdmsrtweaker-lnx) is a Linux/FreeBSD port of the AmdMsrTweaker tool written by Martin Kinkelin and extended by Marcus Pollice.
It has been tested with a 14h (AMD E-350) and a 15h (AMD A10-5700) processor, but should work with all processors supported by AmdMsrTweaker (families 10h-15h).
Changes to frequency will not be reflected by e.g. /proc/cpuinfo (on Linux), but a quick benchmark such as openssl speed sha1 should show a speed difference.
Clone the repo and make sure you have C++ compiler and make(1) installed. Then execute make (both BSD and GNU implementations are supported) in the cloned directory. Optionally copy the resulting file amdmsrt to a directory in $PATH such as /usr/sbin or /usr/local/sbin.
Make sure you have the msr and cpuid (on Linux) or cpuctl (on FreeBSD) kernel modules loaded. The program will otherwise exit with a corresponding error message.
See the file readme.txt for usage examples. The program has to be executed as root and the executable is called amdmsrt.
- Proper documentation
- Find a way to modify GPU P-states for Trinity. (10W more in idle on Linux compared to Windows, probably caused by missing Linux PowerPlay support for Trinity with the open-source drivers.)