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MARC Seminar Series 01
Building Real-Time Software on Linux using SCHED_DEADLINE
Time: 2024.11.21 13:00-15:00 (CET) Interactive Seminar (1h+1h Q&A)
Location: Mälardalen University Västerås Campus, room: Ypsilon
Seminar Abstract
SCHED_DEADLINE is a relatively new scheduling class that was recently added to the Linux kernel for dealing with real-time tasks, in addition to the well-known POSIX-compliant priority-based real-time scheduling class. SCHED_DEADLINE adds a deadline-based scheduler for real-time tasks implementing the well-known Earliest Deadline First (EDF) scheduling policy, configurable as a global, partitioned or clustered EDF scheduler, with the addition of a multi-processor variant of the Constant Bandwidth Server (CBS) algorithm, merged with further features like the Greedy Reclamation of Unused Bandwidth (GRUB), plus a few recently added integration with the energy-aware scheduling subsystem of Linux. Initially developed by the Real-Time Systems (RETIS) Laboratory of Scuola Sant’Anna jointly with Evidence s.r.l. (a spin-off of the RETIS), in the context of the ACTORS EU research project, SCHED_DEADLINE is now a standard component of the mainline Linux kernel, and it is available on all Linux systems, from data-center servers to embedded systems and Android platforms. This seminar provides an overview of the general features of the scheduler from a user perspective, especially in terms of what guarantees can be expected from its use. It will also provide a short re-cap of how SCHED_DEADLINE was used, as well as extended, in recent research from the RETIS, to build real-time systems in a number of diverse processing scenarios: from real-time multimedia; to containerized real-time packet processing in NFV infrastructures; to virtualized cloud services and applications with tight latency requirements; to mixed-criticality use-cases in the automotive and railway industries, as arising within the context of the AMPERE EU project.
The seminar will also feature a live demonstration showing how SCHED_DEADLINE can provide latency guarantees to concurrently running applications on Linux.
Speaker
Tommaso Cucinotta, Associate Professor at the Real-Time Systems Lab (RETIS), and Coordinator of the Cyber-Physical Research Area at the Institute of Communications, Information and Photonics Technologies at Scuola Sant'Anna University.
Tommaso Cucinotta was Born in 1974 in Potenza, Italy. He got Computer Engineering degree on 3rd May 2000, with maximum ranks (110 cum laude), at University of Pisa,
External link.Computer Engineering PhD on 21st July 2004 at the Scuola Superiore Sant'Anna (SSSA) of Pisa External link. with a thesis External link. entitled "Issues in authentication by means of smart-card devices External link.".
From year 2005 to 2011 he was the researcher at the Real-Time Systems Laboratory (ReTiS) External link. of Scuola Superiore Sant'Anna External link.. From year 2012 to June 2014 researcher at Alcatel-Lucent Bell Labs External link. in Dublin, Ireland, carrying out research in security and real-time performance of cloud-based systems. Since July 2014, Software Development Engineer at Amazon DataBase Services, Dublin, Ireland, where he worked on improving the real-time performance and scalability of DynamoDB External link..
Since 2016, he has been the associate professor at the Scuola Superiore Sant'Anna, and coordinator of the real-time and embedded systems research area since July 2019. For more details, please checkout his complete CV External link..
