The real-time community around Linux has been responsible for
important changes in the kernel over the last few decades.
Preemptive mode, high-resolution timers, threaded IRQs,
sleeping locks, tracing, deadline scheduling and formal
tracing analysis are integral parts of the kernel rooted
in real-time efforts, mainly from the PREEMPT_RT patch set.
The real-time and low-latency properties of Linux has
enabled a series of modern use cases, like low-latency
network communication with NFV and the use of Linux in
safety-critical systems.
This MC is the space for the community to discuss the advances of
Linux in real-time and low latency features. For example
(but not limited to):
- Bits left for the PREEMPT_RT merge
- Advances in the fully preemptive mode
- CPU isolation (mainly about how to make it dynamic)
- Tools for PREEMPT_RT and low latency analysis
- Tools for detecting non-optimal usages of the PREEMPT_RT
- Improvement on locks non-protected for priority inversion
- General improvements for locking
- General improvements for scheduling
- Other RT operating systems that run in parallel
with Linux and the integration with Linux (e.g., Xenomai).
- Real-time virtualization
Examples of topics that the community discussed over the
last years that made progress in the RT MC:
- timerlat/osnoise tracers and RTLA
- DL server for starvation avoidance
- Proxy execution (still under discussion)
- Tracing improvements - for example, to trace IPIs
It is important to notice that it is not _only_ about PREEMPT_RT,
but anything related to real-time and low latency. For instance,
CPU isolation, real-time scheduling, timers, other OSs that
run in parallel... and so on.
Join us to discuss the future of real-time and low-latency Linux.
This email has a list of people in Bcc, based on a list of
commit authors in sched/locking/power/time. It is far from being
complete. So, please forward this message to the people on
your team working on scheduling-related topics.
-- Daniel on behalf the organization: Sebastian Andrzej Siewior, Frederic
Weisbecker, Steven Rostedt, Juri Lelli and myself.