ULE scheduler
In today's world, ULE scheduler is a topic that has caught the attention of many people. Since its emergence, ULE scheduler has been the subject of debate and discussion in different areas, generating conflicting opinions and arousing widespread interest. Whether due to its impact on society, its relevance at a specific historical moment, or its influence in the cultural sphere, ULE scheduler has managed to permeate different spheres of daily life. In this article, we will explore the many facets of ULE scheduler, analyzing its importance and implications in different contexts. Join us on this tour of ULE scheduler and discover the keys to understanding its relevance today.
| Original author(s) | Jeff Roberson[1] |
|---|---|
| Initial release | 26 January 2003[2] |
| Stable release | 3.0 (27 February 2008) [±] |
| Repository | |
| Written in | C |
| Operating system | FreeBSD |
| License | BSD 2-clause |
ULE is the default scheduler for the FreeBSD operating system (versions 7.1 and forward) for the i386 and AMD64 architectures.[3] It was introduced in FreeBSD version 5,[4] but it was disabled by default for a time in favor of the traditional BSD scheduler until it reached maturity. The original BSD scheduler does not make full use of SMP or SMT,[5] which is important in modern computing environments. The primary goal of the ULE project is to make better use of SMP and SMT environments. ULE should improve performance in both uniprocessor and multiprocessor environments,[6] as well as interactive response under heavy load.[7] The user may switch between the BSD scheduler and ULE using a kernel compile-time tunable.[8]
References
- ^ "sched_ule(4) man page". Retrieved 2 September 2008.
- ^ "FreeBSD CVS log". Retrieved 27 August 2008.
- ^ "FreeBSD 7.1-RELEASE Release Announcement". retrieved on 5 January 2009
- ^ "ULE: A Modern Scheduler for FreeBSD" (PDF). Retrieved 23 June 2008.
- ^ McKusick & Neville-Neil 2004, 4.4. Thread Scheduling.
- ^ "FreeBSD 7.0-RELEASE Release Notes". Retrieved 23 June 2008.
- ^ Roberson, Jeff. "ULE 2.0". Archived from the original on 17 May 2008. Retrieved 2 September 2008.
- ^ "FreeBSD Handbook". Chapter 8 Configuring the FreeBSD Kernel. Retrieved 18 March 2009.
Sources
- McKusick, M. K.; Neville-Neil, G. V. (2004). The Design and Implementation of the FreeBSD Operating System. Pearson Education. p. 153. ISBN 978-0-321-68003-7.
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