A Loadable Task Execution Recorder for Hierarchical Scheduling in Linux

• This paper presents a Hierarchical Scheduling Framework (HSF) recorder for Linux-based operating systems. The HSF-recorder is a loadable kernel module that is capable of recording tasks and servers without requiring any kernel modifications. Hence, it complies with the reliability and stability requirements in the area of embedded systems where proven versions of Linux are preferred. The recorder is built upon the loadable real-time scheduler framework RESCH (REal-time SCHed- uler). We evaluate our recorder by comparing the overhead of this solu- tion against two other recorders. Also, the tracing accuracy of the HSF- recorder is tested by running a media-processing task together with periodic real-time Linux tasks in combination with servers. We experiment with different task parameters and scheduling strategies and measure the performance of the media-processing task. The tests are recorded with the HSF-recorder, and the Ftrace recorder, in order to show the correctness of the experiments and the HSF-recorder itself.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Datorsystem (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Computer Systems (hsv//eng)

Publikations- och innehållstyp

ref (ämneskategori)

kon (ämneskategori)