JSW 2012 Vol.7(3): 516-525 ISSN: 1796-217X
doi: 10.4304/jsw.7.3.516-525
doi: 10.4304/jsw.7.3.516-525
Implementation and Evaluation of the Synchronization Protocol Immediate Priority Ceiling in PREEMPT-RT Linux
Andreu Carminati, Rˆomulo Silva de Oliveira, and Lu´ıs Fernando Friedrich
Department of Automation and Systems, Federal University of Santa Catarina, Florian´opolis, Brazil
Abstract—In general purpose operating systems, such as the mainline Linux, priority inversions occur frequently and are not considered harmful. They are not avoided or limited as in real-time systems. In the current version of the kernel PREEMPT-RT Linux, the protocol used for priority inversion control is the Priority Inheritance. The objective of this paper is to propose the implementation of an alternative protocol, the Immediate Priority Ceiling, for use in drivers dedicated to real-time applications. This paper explains how the protocol was implemented in the real-time kernel and compare the protocol implemented with the Priority Inheritance implementation, currently used in the real-time kernel.
Index Terms—real-time systems; Linux; process synchronization
Abstract—In general purpose operating systems, such as the mainline Linux, priority inversions occur frequently and are not considered harmful. They are not avoided or limited as in real-time systems. In the current version of the kernel PREEMPT-RT Linux, the protocol used for priority inversion control is the Priority Inheritance. The objective of this paper is to propose the implementation of an alternative protocol, the Immediate Priority Ceiling, for use in drivers dedicated to real-time applications. This paper explains how the protocol was implemented in the real-time kernel and compare the protocol implemented with the Priority Inheritance implementation, currently used in the real-time kernel.
Index Terms—real-time systems; Linux; process synchronization
Cite: Andreu Carminati, Rˆomulo Silva de Oliveira, and Lu´ıs Fernando Friedrich, "Implementation and Evaluation of the Synchronization Protocol Immediate Priority Ceiling in PREEMPT-RT Linux," Journal of Software vol. 7, no. 3, pp. 516-525, 2012.
General Information
ISSN: 1796-217X (Online)
Frequency: Quarterly
Editor-in-Chief: Prof. Antanas Verikas
Executive Editor: Ms. Yoyo Y. Zhou
Abstracting/ Indexing: DBLP, EBSCO, CNKI, Google Scholar, ProQuest, INSPEC(IET), ULRICH's Periodicals Directory, WorldCat, etc
E-mail: jsweditorialoffice@gmail.com
-
Mar 01, 2024 News!
Vol 19, No 1 has been published with online version [Click]
-
Jan 04, 2024 News!
JSW will adopt Article-by-Article Work Flow
-
Apr 01, 2024 News!
Vol 14, No 4- Vol 14, No 12 has been indexed by IET-(Inspec) [Click]
-
Apr 01, 2024 News!
Papers published in JSW Vol 18, No 1- Vol 18, No 6 have been indexed by DBLP [Click]
-
Nov 02, 2023 News!
Vol 18, No 4 has been published with online version [Click]