License: Creative Commons Attribution 4.0 International license (CC BY 4.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.ECRTS.2023.16
URN: urn:nbn:de:0030-drops-180451
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2023/18045/
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Ahmed, Shareef ; Anderson, James H.

Optimal Multiprocessor Locking Protocols Under FIFO Scheduling

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LIPIcs-ECRTS-2023-16.pdf (0.9 MB)

Abstract

Real-time locking protocols are typically designed to reduce any priority-inversion blocking (pi-blocking) a task may incur while waiting to access a shared resource. For the multiprocessor case, a number of such protocols have been developed that ensure asymptotically optimal pi-blocking bounds under job-level fixed-priority scheduling. Unfortunately, no optimal multiprocessor real-time locking protocols are known that ensure tight pi-blocking bounds under any scheduler. This paper presents the first such protocols. Specifically, protocols are presented for mutual exclusion, reader-writer synchronization, and k-exclusion that are optimal under first-in-first-out (FIFO) scheduling when schedulability analysis treats suspension times as computation. Experiments are presented that demonstrate the effectiveness of these protocols.

BibTeX - Entry

@InProceedings{ahmed_et_al:LIPIcs.ECRTS.2023.16,
  author =	{Ahmed, Shareef and Anderson, James H.},
  title =	{{Optimal Multiprocessor Locking Protocols Under FIFO Scheduling}},
  booktitle =	{35th Euromicro Conference on Real-Time Systems (ECRTS 2023)},
  pages =	{16:1--16:21},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-280-8},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{262},
  editor =	{Papadopoulos, Alessandro V.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/opus/volltexte/2023/18045},
  URN =		{urn:nbn:de:0030-drops-180451},
  doi =		{10.4230/LIPIcs.ECRTS.2023.16},
  annote =	{Keywords: Real-Time Systems, Real-Time Synchronization, Multiprocessors}
}

Keywords: Real-Time Systems, Real-Time Synchronization, Multiprocessors
Collection: 35th Euromicro Conference on Real-Time Systems (ECRTS 2023)
Issue Date: 2023
Date of publication: 03.07.2023
Supplementary Material: Software: https://github.com/Tamal10/fifo-lock

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