Real Time Presentations

librtpi: Conditional Variables for Real-Time Applications [ELC 2020]
Presenter: Gratian Crisan, National Instruments Summary:


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Linux on Quick Turnaround Projects at Ball: No, We Aren't Putting Linux in Canning Jars [ELC 2018]
Presenter: Sam Povllus, Ball Aerospace Summary:This Presentation will focus on the aspects of making Linux work with an FPGA, as well as how various hardware and software decisions were reached and how those decisions affected aspects of integration with hardware, and maintenance.


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Steering Xenomai into the Real-Time Linux Future [ELC 2018]
Presenter: Jan Kiszka, Siemens AG Summary: This will present plans and first steps to revive the Xenomai community, make it broader and stronger. This involves scaling down the project scope to a maintainable core.


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Maintaining a Real Time Stable Kernel [ELC 2018]
Presenter: Steven Rostedt, VMware Summary: This slides will present what is required to maintain a stable RT tree, such as tools that you can use. What tricks can be done with git to find properly backport patches that are RT specific. It will also cover the current tests that are performed to make sure the released RT stable kernel is fully functional.


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What Every Driver Developer Should Know about RT [ELC 2018]
Presenter: Julia Cartwright, National Instruments Summary: The intent of this presentation is to describe the classes of problems in drivers which have detrimental impact to RT, why they cause issues on RT, and how they might be resolved.


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Not Really, but Kind of Real Time Linux [ELC 2018]
Presenter: Sandra Capri, Ambient Sensors Summary: This slides will illustrate what kernel configurations worked, and how kernel space code compared to user space code. Additionally, there may be other ways to skin this real time cat. Results will be reported from work done on a Raspberry Pi as well as a BeagleBone Black.


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CPU Power Saving Methods for Real-time Workloads [ELC 2018]
Presenter: Ramesh Thomas, Intel Summary: The presentation will give a background of the issues faced by real-time applications when CPU power management is enabled. It will then explain tools, configurations and methods that can be used to tune applications and CPU power management in the kernel to be able to save power without impacting the deterministic latency tolerance requirements.


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Effectively Measure and Reduce Kernel Latencies for Real-time Contraints [ELC 2017]
Presenter: Jim Huang, South Star Xelerator (SSX) Summary: This presentation provides information of the effective ways to experiment the different methods, in terms of their response latency, and figure out how the system load, and user space task priorities affect them on both Intel and ARM architectures.Also discussed about how to analyze and improve the scalability of Linux performance in multi-core environments upon the measurements, used in actual real-time applications.


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Building Mixed Criticality Linux Systems with the Jailhouse Hypervisor [ELC 2017]
Presenter: Ralf Ramsauer, Technical University of Applied Sciences Regegnsburg Summary: This presentation provides information about porting a safety and real-time critical existing application as a Jailhouse guest. It shows a novel and promising approach for implementing mixed-criticality applications with real-time requirement while not loosing the benefits of Linux.Also information about a multicopter platform running the real-time critical flight stack in an isolated Jailhouse guest.


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Timekeeping in the Linux Kernel [ELC 2017]
Presenter: Stephen Boyd, Qualcomm Innovation Center Summary: This presentation provides information about timekeeping code, exploring how the kernel abstracts the hardware, how those abstractions are built upon to implement NOHZ, timers, hrtimers, cpu-idle, POSIX clocks, etc. and how we keep things working when these abstractions break down with the tick-broadcast mechanism.


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Real-Time Linux on Embedded Multicore Processors [ELC 2017]
Presenter: Andreas Ehmanns, Technical Advidor Summary: This presentation gives idea about vanilla kernel and describes real-time multicore system. Based on tests running on a 8-core and a 24-core hardware system presenter discuss each single step, it's effect on real-time behaviour and explain why profound processor architecure knowledge is mandatory.


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OpenEmbedded in the Real World [ELC 2016]
Presenter: Scott Murray, Konsulko Group Summary: This presentation provides information about implementing OpenEmbedded in a production build system and issues associated with shipping and maintaining an OpenEmbedded based product.Also describes building OpenEmbedded based distributions for both small and large customers to discuss some of the common pitfalls encountered and pragmatic workarounds for them


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Understanding a Real-Time System [ELC 2016]
Presenter: Steven Rostedt, Red Hat Summary: This presentation provides information about different aspects of Real-Time system such as hardware and firmware, followed by the kernel, the libraries used, and special constraints for applications and the interaction between these levels.


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Practical Real-Time Linux [ELC 2015]
Presenter: Arnout Vandecappelle, Essensium/Mind Summary: This presentation describes practical Real-Time linux with Xenomai and PREEMPT_RT.


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POWERLINK over Xenomai [ELCE 2015]
Presenter: Pierre Ficheux, Open Wide Summary: These slides gives information about industrial bus, POWERLINK, Linux and RT (PREEMPT- RT, Xenomai). Also discuss problems, tests and results.


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Practical Real-Time Linux [ELCE 2015]
Presenter: Arnout Vandecappelle, Essensium/Mind Summary: This presentation describes practical Real-Time linux with Xenomai and PREEMPT_RT.


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Using Real-Time Patch with LTSI Kernel [ELC 2014]
Presenter: Yoshitake Kobayashi, Toshiba Summary: This presentation shows requirement and issues to make LTSI-RT patch.


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Enhancing Real-Time Capabilities with the PRU [ELCE 2014]
Presenter: Ron Birkett, Texas Instruments Summary: This presentation discuss about what is real-time and PRU hardware overview.
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Real Safe Times in the Jailhouse Hypervisor [ELCE 2014]
Presenter: Jan Kiszka, Siemens Summary: This presentation provides information about Jailhouse hypervisor, it's features and simplicity, architecture support and application development.


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rtmux: A Thin Multiplexer To Provide Hard Realtime Applications For Linux [ELCE 2014]
Presenter: Jim Huang, ITRI Summary: This presentation explains how to build lightweight real-time environment for Linux/ARM also discuss about RTMux and Linux-friendly remote communication mechanism.


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Using and Understanding the Real-Time Cyclictest Benchmark [ELC 2013] [ELCE 2013]
Presenter: Frank Rowand, Sony Network Entertainment Summary: This talk explore and explain the complexities of Cyclictest. Also provides information about how Cyclictest describe potential real-time performance of a system.


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Understanding PREEMPT_RT (The Real-Time Patch) [ELC 2013]
Presenter: Steven Rostedt, RedHat Summary: This talk will explain what the real time patch provides and special programming tips that will ensure embedded developers will get the best from their devices.


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Common Clock Framework: How to Use It [ELC 2013]
Presenter: Gregory Clement, Free Electrons Summary: This presentation provides an introduction on why we needed Common clock framework and on the problems it solves, the implementation details of this framework. And describes how to use this framework to add clock support to a new ARM SoC.


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Making Linux do Hard Real-Time [ELC 2013]
Presenter: Brent Roman, Monterey Bay Aquarium Research Institute Summary: This presentation gives information about Real-time system along with practical examples.
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An Essential Relationship between Real-time and Resource Partitioning [ELCE 2013]
Presenter: Yoshitake Kobayashi Summary: This presentation explains the requirements of real-time system, what is hardware resource partitioning and issues to implement resource partitioning.


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Real Time (BoFs) [ELC 2012]
Presenter: Frank Rowand, Sony Network Entertainment Summary: This session provides a forum to discuss Real Time Linux, share how you are using it.Also talks about PREEMPT_RT patch size, its current version, stable tree and various RT features.
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Understanding PREEMPT_RT (The Real-Time Patch) [ELCE 2012]
Presenter: Steven Rostedt, Red Hat Summary: This presentation provides information about real-time os, kernel preemption and PREEMPT_RT patch. Also discuss menuconfig options available.


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Real-Time Linux in Industrial Appliances [ELCE 2012]
Presenter: Martin Bis, BIS Summary: These slides provides information about usage of linux in embedded enviroment, practical cases and also about driver design.


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Identifying Embedded Real-Time Latency Issues: I-Cache and Locks [ELC 2011]
Presenter: Frank Rowand (Sony) Summary: This presentation provides information about the black art, providing insights into the impact of I-cache and locks real-time latency on an SMP ARM embedded system.


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RT-Preempt: What's The State and Why There is No Roadmap [ELC 2011]
Presenter: Thomas Gleixner (linutronix) Summary: This presentation discuss the development status of RT-Preempt and also about the issues in existing mainline.


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Solving Real-Time Scheduling Problems with RT_PREEMPT and Deadline-Based Scheduler [ELC 2011]
Presenter: Xi Wang (Broadcom) Summary: This presentation explains meeting real-time requirements of both VoIP and packet forwarding tasks by modifying Linux prority with RT_PREEMPT.


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How Linux PREEMPT_RT Works [ELCE 2011]
Presenter: Frank Rowand (Sony) Summary: This presentation enumerates some of the design choices and implementation that enable Linux PREEMPT_RT_FULL real time and the resulting performance implications.


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Effective Use of RT-Preempt [ELC 2010]
Presenter: Kevin Dankwardt Summary: This talk will guide developers interested in making use of the rt-preempt effort. Also provides information about kernel configuration, comparison of preemption features, use of priority inheritance, ISRs and priority scheduling, real-time applications,use of mlockall and issues gathering performance info, including page faults with proc files timer resolution.


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Multi-core Scheduling Optimizations for Soft Real-time Multi-threaded Applications -- A Cooperation Aware Approach [ELC 2010]
Presenter: Lucas Martins De Marchi Summary:


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Measuring Responsiveness of Linux Kernel on Embedded System [ELC 2010]
Presenter: YungJoon Jung and DongHyouk Lim Summary:


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Real-Time Linux Failure [ELC 2010]
Presenter: Frank Rowand Summary:


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Identifying Embedded Real-Time Latency Issues: I-Cache and Locks [ELCE 2010]
Presenter: Frank Rowand Summary: This talk explores the black art, providing insights into the impact of I-cache and locks on real-time latency on an SMP ARM embedded system. Some signatures of I-cache and lock issues and alternative approaches to investigate latency have been discussed.


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Musings on analysis of measurements of a real-time workload.[ELC 2009]
Presenter: Frank Rowand Summary:


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Using Real-Time Linux [ELC 2008]
Presenter: Klaas van Gend Summary:

Real-Time Linux BOF [ELC 2008]
Presenter: YungJoon Jung Summary:

Real-Time Virtualization Solutions for Linux - A Comparison of Strategies [ELC 2008]
Presenter: Nicholas McGuire Summary:

Adventures in real-time performance tuning, part 1 [ELCE 2008]
Presenter: Frank Rowand Summary: This presentation provides an example of performance tuning for MIPS target boards.


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Adventures in real-time performance tuning, part 2 [ELCE 2008]
Presenter: Frank Rowand Summary: This presentation provides information related to strategies and tactics for performance tuning. And also gives examples of tuning.


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Realtime BOF - Realtime Preempt Patch Adaptation Experience (including Commercial Product) [ELC 2007]
Presenter: YungJoon Jung Summary:


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Detection & Resolution of Real Time Issues Using TimeDoctor [ELCE 2007]
Presenter: Francois Audeon Summary: This presentation provides information about TimeDoctor, it's features and setup on Linux based embedded system and some example use cases.


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Linux for Cell/B.E. and PS3, Related Open Source Projects BoF [ELCE 2007]
Presenter: Hiroyuki Machida Summary: This presntation provides information about Cell Broadband Engine, status of Linux Distro, cell performance and about SPE programming and variious OSS activities.


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RT Patch for Celleb - Patch Status and Performance Measurements [ELCE 2007]
Presenter: Tsutomu Owa Summary: These slides gives information about realtime-preempt patch(RT patch) and about RT patch status for Celleb/PowerPC64.
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Assessment of the Realtime Preemption Patches (RT-Preempt) and their impact on the general purpose performance of the system [ELCE 2007]
Presenter: Arthur Siro Summary: This presentation discuss about how good is RT-Preempt with respect to the worst-case latency, and also about how expensive is RT-Preempt with respect to a possible performance degradation of the system.


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