ChronOS Real-time Linux

ChronOS is a real-time Linux patch created by the Real-time Systems Lab at Virginia Tech. It builds upon the CONFIG_PREEMPT_RT patch and is designed to provide a testbed for real-time and distributed task scheduling and resource management research on multicore platforms.

The current version of ChronOS is Beta 2.7 which is based on Linux kernel 2.6.33.7 and the CONFIG_PREEMPT_RT patch.

Installation Guide

To download ChronOS Linux, please refer to Downloading ChronOS Linux

For installation instructions, please refer to the Installation Guide.

Documentation

• For architecture details please see About ChronOS Linux
• For full documentation of the user-space APIs provided by ChronOS, please look at ChronOS Userspace Docs.
• For kernel programming tips and other related documentation, please look at Kernel Programming Tips

Publications

• ChronOS Linux: A Best-Effort Real-Time Multiprocessor Linux Kernel, Matthew Dellinger, Piyush Garyali, and Binoy Ravindran, ACM Design and Automation Conference (DAC 2011), June 2011, To appear. ©ACM, 2011. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution.

• On Best-Effort Utility Accrual Real-Time Scheduling on Multiprocessors, Piyush Garyali, Matthew Dellinger, and Binoy Ravindran, International Conference On Principles Of Distributed Systems (OPODIS 2010), December 2010

• On Best-Effort Utility Accrual Real-Time Scheduling on Multiprocessors, Piyush Garyali, MS Thesis, July 2010

• Collaborative Scheduling and Synchronization of Distributable Real-Time Threads, Sherif F. Fahmy, PhD Dissertation, May 2010

Past publications on distributed threads and real-time scheduling are available here.

ChronOS News

Latest Development News

• April 12, 2011 - ChronOS Beta 2.7 Released. (Changelog).
• March 21, 2011 - ChronOS Beta 2.6 Released. (Changelog).
• February 20, 2011 - ChronOS Beta 2.5 Released. (Changelog).
• November 17, 2010 - ChronOS Beta 2.4 Released. (Changelog).
• October 12, 2010 - ChronOS Beta 2.3 Released. (Changelog).
• September 22, 2010 - ChronOS Beta 2.2 Released. (Changelog).
• August 28, 2010 - ChronOS Beta 2.1 Released. (Changelog).
• July 22, 2010 - ChronOS Beta 2 Released. (Changelog).
• April 15, 2010 - ChronOS Beta 1.1 Released. (Changelog).
• March 25, 2010 - ChronOS Beta 1 Released.

Contacts

Faculty Advisor

Binoy Ravindran binoy@vt.edu

Current Maintainer

Matthew Dellinger matthew@mdelling.com

Other Developers

• Jonathan Anderson andersoj@andersoj.org
• Aaron Lindsay aaron.lindsay@vt.edu

Past Contributers

• Piyush Garyali piyushg@vt.edu (M.S., 2010)
• Sherif Fahmy fahmy@vt.edu (PhD., 2010)
• Caleb Hopkins (B.S., 2009)
• Surry Shome (B.S., 2009)