Differences

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--- realtime [07/10/2020 15:15] – admin
+++ realtime [06/09/2026 18:45] (current) – admin
@@ Line 1: / Line 1: @@
 https://wiki.linuxfoundation.org/realtime/rtl/start
 https://wiki.linuxfoundation.org/realtime/rtl/all_topics
+https://www.embedded-software-engineering.de/entwicklung-einer-linux-realtime-applikation-a-b862ea485a877e6a7e2f25edd98f5ef7/
+{{:screenshot_from_2026-06-09_20-43-34.png?direct&400|}}
+====== Learning ======
+https://realtime-linux.org/a-checklist-for-real-time-applications-in-linux/
+https://bootlin.com/training/preempt-rt/
+====== Core partitioning ======
+User-space partitioning, core isolation, NO_HZ_FULL
+Dual-OS partitioning, using a POSIX RTOS in some cores, over a hypervisor
+https://yosh.ke.mu/raspberry_pi_isolating_cores_in_linux_kernel
 ====== Multitasking ======
@@ Line 27: / Line 48: @@
   * taskset
-===== Linux specific APIs =====
+==== Linux specific APIs ====
   * sched_setattr
   * sched_setaffinity
@@ Line 33: / Line 54: @@
   * pthread_setaffinity_np
-===== POSIX realtime APIs =====
+==== POSIX realtime APIs ====
   * sched_setscheduler
   * ...
+==== Benchmarking ====
+Latency measurement with **cyclictest** (results for SCHED_FIFO).
+Sources of latency:
+  * Kernel system call
+  * ISR
+  * Kernel locks
+  * Priority inversions
+  * Timers
+  * Page faults
+**Ftrace**
+**Kernel Shark**
+**LLTng**