linux-kernel - [CPF] Real-time Micro-conference at LPC

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Date: Wed, 22 May 2024 16:25:35 +0200
From: Daniel Bristot de Oliveira <bristot@...nel.org>
To: LKML <linux-kernel@...r.kernel.org>,
 linux-rt-users <linux-rt-users@...r.kernel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
 Frederic Weisbecker <frederic@...nel.org>,
 Steven Rostedt <rostedt@...dmis.org>, Juri Lelli <juri.lelli@...hat.com>,
 anna-maria@...utronix.de, Thomas Gleixner <tglx@...utronix.de>
Subject: [CPF] Real-time Micro-conference at LPC

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.