NDLI: Fairness and interactive performance of O(1) and CFS Linux kernel schedulers

Content Provider	IEEE Xplore Digital Library
Author	Wong, C.S. Tan, I.K.T. Kumari, R.D. Lam, J.W. Fun, W.
Copyright Year	2008
Description	Author affiliation: Multimedia University, Malaysia (Wong, C.S.; Tan, I.K.T.; Kumari, R.D.; Lam, J.W.) \|\| Intel Penang Design Centre, Malaysia (Fun, W.)
Abstract	The design of an Operating System (OS) scheduler is meant to allocate its resources appropriately to all applications. In this paper, we present the scheduling techniques used by two Linux schedulers: O(1) and Completely Fair Scheduler (CFS). CFS is the Linux kernel scheduler that replaces the O(1) scheduler in the 2.6.23 kernel. The design goals of CFS are to provide fair CPU resource allocation among executing tasks without sacrificing interactive performance. The ability to achieve good fairness in distributing CPU resource among tasks is important to prevent starvation. However, these design goals have never been scientifically evaluated despite the fact that there are many conventional operating system benchmarks that are geared towards measuring systems performance in terms of throughput. We therefore scientifically evaluate the design goals of CFS by empirical evaluation. We measure the fairness and interactivity performance by using fairness and interactivity benchmarks. To provide a meaningful representation of results, comparisons of O(1) and CFS kernel schedulers of the open source Linux OS are used. Our experience indicates the CFS does achieve its design goals.
Starting Page	1
Ending Page	8
File Size	210623
Page Count	8
File Format	PDF
ISBN	9781424423279
DOI	10.1109/ITSIM.2008.4631872
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-08-26
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pediatrics Sleep Linux Bandwidth Mathematical model Kernel Equations
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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