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likwid setFreq

rrze-likwid edited this page Jun 10, 2015 · 2 revisions

likwid-setFreq : Daemon to set the CPU frequencies with higher priviledges.

Introduction

likwid-setFreq is a command line application that mediates the actual setting of CPU cores' frequency and governor for likwid-setFrequencies. Since only users with root priviledges are allowed to change the frequency of CPU cores, likwid-setFreq needs to be suid root.

Usage

It is not recommended to use the daemon directly, it is more convenient to use the likwid-setFrequencies application.

Building

The daemon will be built in the default build process if BUILDDAEMON in the config.mk file is set to true. You can trigger the build explicitly with make likwid-setFreq. The daemon needs to be suid root, which is done at make install. If you want to copy the daemon manually, adjust permissions with:

# chown root:root likwid-setFreq
# chmod u+s likwid-setFreq 
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