Real Time Presentations
Contents
- 1 librtpi: Conditional Variables for Real-Time Applications
- 2 Linux on Quick Turnaround Projects at Ball: No, We Aren't Putting Linux in Canning Jars
- 3 Steering Xenomai into the Real-Time Linux Future
- 4 Maintaining a Real Time Stable Kernel
- 5 What Every Driver Developer Should Know about RT
- 6 Not Really, but Kind of Real Time Linux
- 7 CPU Power Saving Methods for Real-time Workloads
- 8 Effectively Measure and Reduce Kernel Latencies for Real-time Contraints
- 9 Building Mixed Criticality Linux Systems with the Jailhouse Hypervisor
- 10 Timekeeping in the Linux Kernel
- 11 Real-Time Linux on Embedded Multicore Processors
- 12 OpenEmbedded in the Real World
- 13 Understanding a Real-Time System
- 14 Practical Real-Time Linux
- 15 POWERLINK over Xenomai
- 16 Practical Real-Time Linux
- 17 Using Real-Time Patch with LTSI Kernel
- 18 Enhancing Real-Time Capabilities with the PRU
- 19 Real Safe Times in the Jailhouse Hypervisor
- 20 rtmux: A Thin Multiplexer To Provide Hard Realtime Applications For Linux
- 21 Using and Understanding the Real-Time Cyclictest Benchmark
- 22 Understanding PREEMPT_RT (The Real-Time Patch
- 23 Common Clock Framework: How to Use It
- 24 Making Linux do Hard Real-Time
- 25 An Essential Relationship between Real-time and Resource Partitioning
- 26 Real Time (BoFs)
- 27 Understanding PREEMPT_RT (The Real-Time Patch)
- 28 Real-Time Linux in Industrial Appliances
- 29 Identifying Embedded Real-Time Latency Issues: I-Cache and Locks
- 30 RT-Preempt: What's The State and Why There is No Roadmap
- 31 Solving Real-Time Scheduling Problems with RT_PREEMPT and Deadline-Based Scheduler
- 32 How Linux PREEMPT_RT Works
- 33 Effective Use of RT-Preempt
- 34 Multi-core Scheduling Optimizations for Soft Real-time Multi-threaded Applications -- A Cooperation Aware Approach
- 35 Measuring Responsiveness of Linux Kernel on Embedded System
- 36 Real-Time Linux Failure
- 37 Identifying Embedded Real-Time Latency Issues: I-Cache and Locks
- 38 Musings on analysis of measurements of a real-time workload.
- 39 Using Real-Time Linux
- 40 Real-Time Linux BOF
- 41 Real-Time Virtualization Solutions for Linux - A Comparison of Strategies
- 42 Adventures in real-time performance tuning, part 1
- 43 Adventures in real-time performance tuning, part 2
- 44 Realtime BOF - Realtime Preempt Patch Adaptation Experience (including Commercial Product)
- 45 Detection & Resolution of Real Time Issues Using TimeDoctor
- 46 Linux for Cell/B.E. and PS3, Related Open Source Projects BoF
- 47 RT Patch for Celleb - Patch Status and Performance Measurements
- 48 Assessment of the Realtime Preemption Patches (RT-Preempt) and their impact on the general purpose performance of the system
librtpi: Conditional Variables for Real-Time Applications
Presenter: Gratian Crisan, National Instruments
Summary:
- PDF ELC 2020
Linux on Quick Turnaround Projects at Ball: No, We Aren't Putting Linux in Canning Jars
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.
Steering Xenomai into the Real-Time Linux Future
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.
Maintaining a Real Time Stable Kernel
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.
What Every Driver Developer Should Know about RT
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.
Not Really, but Kind of Real Time Linux
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.
CPU Power Saving Methods for Real-time Workloads
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.
Effectively Measure and Reduce Kernel Latencies for Real-time Contraints
Presenter: Jim Huang, South Star Xelerator (SSX)
Summary:
This presentation provides the 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.
Building Mixed Criticality Linux Systems with the Jailhouse Hypervisor
Presenter: Ralf Ramsauer, Technical University of Applied Sciences Regegnsburg
Summary:
This presentation provides the 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.
Timekeeping in the Linux Kernel
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.
Real-Time Linux on Embedded Multicore Processors
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.
OpenEmbedded in the Real World
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
Understanding a Real-Time System
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.
Practical Real-Time Linux
Presenter: Arnout Vandecappelle, Essensium/Mind
Summary:
This presentation describes practical Real-Time linux with Xenomai and PREEMPT_RT.
- PDF ELC 2015
POWERLINK over Xenomai
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.
Practical Real-Time Linux
Presenter: Arnout Vandecappelle, Essensium/Mind
Summary:
This presentation describes practical Real-Time linux with Xenomai and PREEMPT_RT.
Using Real-Time Patch with LTSI Kernel
Presenter: Yoshitake Kobayashi, Toshiba
Summary:
This presentation shows requirement and issues to make LTSI-RT patch.
Enhancing Real-Time Capabilities with the PRU
Presenter: Ron Birkett, Texas Instruments
Summary:
This presentation discuss about what is real-time and PRU hardware overview.
- PDF ELCE 2014
Real Safe Times in the Jailhouse Hypervisor
Presenter: Jan Kiszka, Siemens
Summary:
This presentation provides information about Jailhouse hypervisor, it's features and simplicity, architecture
support and application development.
- PDF ELCE 2014
rtmux: A Thin Multiplexer To Provide Hard Realtime Applications For Linux
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.
- PDF ELCE 2014
Using and Understanding the Real-Time Cyclictest Benchmark
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.
Understanding PREEMPT_RT (The Real-Time Patch
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.
Common Clock Framework: How to Use It
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.
Making Linux do Hard Real-Time
Presenter: Brent Roman, Monterey Bay Aquarium Research Institute
Summary:
This presentation gives information about Real-time system along with practical examples.
An Essential Relationship between Real-time and Resource Partitioning
Presenter: Yoshitake Kobayashi
Summary:
This presentation explains the requirements of real-time system, what is hardware resource partitioning
and issues to implement resource partitioning.
- PDF ELCE 2013
Real Time (BoFs)
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.
- PDF ELC 2012
Understanding PREEMPT_RT (The Real-Time Patch)
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.
- ODP ELCE 2012
Real-Time Linux in Industrial Appliances
Presenter: Martin Bis, BIS
Summary:
These slides provides information about usage of linux in embedded enviroment, practical cases and also about
driver design.
- PDF ELCE 2012
Identifying Embedded Real-Time Latency Issues: I-Cache and Locks
Presenter: Frank Rowand (Sony)
Summary:
This presentation provides the information about the black art, providing insights into the impact of I-cache
and locks real-time latency on an SMP ARM embedded system.
- PDF ELC 2011
RT-Preempt: What's The State and Why There is No Roadmap
Presenter: Thomas Gleixner (linutronix)
Summary:
This presentation discuss the development status of RT-Preempt and also about the issues in existing mainline.
- PDF ELC 2011
Solving Real-Time Scheduling Problems with RT_PREEMPT and Deadline-Based Scheduler
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.
- PDF ELC 2011
How Linux PREEMPT_RT Works
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.
- PDF ELCE 2011
Effective Use of RT-Preempt
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.
- ODP ELC 2010
Multi-core Scheduling Optimizations for Soft Real-time Multi-threaded Applications -- A Cooperation Aware Approach
Presenter: Lucas Martins De Marchi
Summary:
Measuring Responsiveness of Linux Kernel on Embedded System
Presenter: YungJoon Jung and DongHyouk Lim
Summary:
- PDF ELC 2010
Real-Time Linux Failure
Presenter: Frank Rowand
Summary:
- PDF ELC 2010
Identifying Embedded Real-Time Latency Issues: I-Cache and Locks
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.
- PDF ELCE 2010
Musings on analysis of measurements of a real-time workload.
Presenter: Frank Rowand
Summary:
- PDF ELC 2009
Using Real-Time Linux
Presenter: Klaas van Gend
Summary:
- ELC 2008
Real-Time Linux BOF
Presenter: YungJoon Jung
Summary:
- ELC 2008
Real-Time Virtualization Solutions for Linux - A Comparison of Strategies
Presenter: Nicholas McGuire
Summary:
- ELC 2008
Adventures in real-time performance tuning, part 1
Presenter: Frank Rowand
Summary:
This presentation provides an example of performance tuning for MIPS target boards.
- OGV ELCE 2008
Adventures in real-time performance tuning, part 2
Presenter: Frank Rowand
Summary:
This presentation provides information related to strategies and tactics for performance tuning.
And also gives examples of tuning.
- OGV ELCE 2008
Realtime BOF - Realtime Preempt Patch Adaptation Experience (including Commercial Product)
Presenter: YungJoon Jung
Summary:
- PDF ELC 2007
Detection & Resolution of Real Time Issues Using TimeDoctor
Presenter: Francois Audeon
Summary:
This presentation provides an information about TimeDoctor, it's features and setup on Linux based embedded
system and some example use cases.
Linux for Cell/B.E. and PS3, Related Open Source Projects BoF
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.
- PDF ELCE 2007
RT Patch for Celleb - Patch Status and Performance Measurements
Presenter: Tsutomu Owa
Summary:
These slides gives information about realtime-preempt patch(RT patch) and about RT patch status for Celleb/PowerPC64.
- PDF ELCE 2007
Assessment of the Realtime Preemption Patches (RT-Preempt) and their impact on the general purpose performance of the system
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.