🔧 Real-Time Industrial Networking on RK3576
This article explores how PREEMPT_RT and EtherCAT are implemented on the Forlinx OK3576 platform, enabling hard real-time communication for industrial control and automation systems.
👉 https://www.forlinx.net/industrial-news/igh-ethercat-preempt-rt-forlinx-ok3576-776.html
#ForlinxEmbedded #EtherCAT #PREEMPT_RT #IndustrialAutomation #RealTimeLinux #OK3576
A year ago I was experimenting with Debian netinst and live-build, trying to understand boot, init, and live systems.
Today BashCore is a set of minimalist Debian-based live ISOs (CLI/GUI, optional PREEMPT_RT).
In 2026 the focus shifts to Buildroot: reproducible systems, RT Linux, and minimal OS design for real workloads.
Happy New Year to everyone!
#Linux #Buildroot #Debian #PREEMPT_RT #RealTimeLinux #Embedded
🚀 Rock-solid Real-Time performance on Raspberry Pi 4!
Just stress-tested via SSH a custom #Buildroot (Kernel 6.12.61-v8 #PREEMPT_RT). Even with a massive memory hog running (stress-ng --vm 2 --vm-bytes 1G), the results are insane:
🔹 Avg Latency: 14µs
🔹 Max Latency: 42µs
🔹 Jitter: Virtually zero
This #RPi4 is now a deterministic beast. 🐧🛠️ 64-bit RT Linux at its best!
#Linux #RealTime #EmbeddedLinux #RaspberryPi #Kernel #Performance #SystemStability
Built a custom Raspberry Pi 4 RT OS using Buildroot.
Manually downloaded the Raspberry kernel (6.12.61) and PREEMPT_RT patch (6.12.57), applied locally and produced a bootable SD.
It works.
No GUI, CLI tools only, deterministic boot and real-time behavior.
Learning by doing 🤓
#Linux #Buildroot #RaspberryPi #PREEMPT_RT #RealTime #Embedded #NoGUI #CLI #Nerd
Запуск приложений в Linux c использованием политик планирования «реального» времени
В октябре 2025 года в Нижнем Новгороде на форуме "Промышленная автоматизация: переход на открытую АСУ ТП" с коллегами зашел интересный разговор о Linux с патчем реального времени. В разговоре затронули разные интересные моменты: работа через гипервизоры, выделения ядер и отличия от QNX. Договорились о том, что я напишу небольшой гайд, рассказывающий что и как можно сделать, чтобы оптимизировать время отклика. Отдельно отмечу, что задачу доказать, что Linux с патчем PREEMPT_RT является операционной системой жёсткого реального времени перед собой не ставлю. На мой взгляд, она такой не является, так сказать by designe, в отличие от тех же QNX , VxWorks и ThreadX.
Halfway point (24h) in the Atom N450 Real-Time endurance test! The tiny netbook is stable and deterministic under 100% CPU load.
Key Results:
✅ System stability confirmed (0.0% CPU usage for kworkers/rcu).
⏱️ Max Jitter remains extremely low after 20 hours: 174μs (microseconds).
This proves the PREEMPT_RT kernel is effectively managing the worst-case scenario!
The **BashCoreZ RT** supremacy continues! We just tamed a 2009 Intel Atom N450 netbook (2GB RAM).
MAX Jitter hit an impressive **112µs** (-t1). The difference when scaling to 16 threads (-t16) was only 42µs!
This confirms it: our zero-bloat #PREEMPT_RT architecture minimizes scheduling overhead on even the weakest legacy CPUs.
We're bringing guaranteed #RealTime performance to obsolete hardware. BashCoreZ RT makes ancient PCs viable again. Zero excuses. 👑
Checkmate. The final #BashCoreZ #PREEMPT_RT test is in:
On a budget 2-core Celeron N4500 laptop (250€), Max Jitter hit an insane **39µs** after isolating network noise!
This proves it: Hardware specs count for little. The clean, zero-bloat kernel is EVERYTHING. We're delivering near Hard Real-Time performance with minimal cost.
29µs on i7 vs. 39µs on Celeron? The difference is negligible. BashCoreZ RT is the definitive, free Real-Time solution. 👑
We didn't just win; we dominated. The ultimate #BashCoreZ #PREEMPT_RT test results are here.
On a clean, budget MSI i7 laptop (500€!), Max Jitter hit an insane **29µs**! That's the true potential of our "zero bloat" kernel 6.12 base.
(Context: Our previous "worst-case scenario" test, with some apps running, capped at only 239µs. Competitors struggle to hit that clean!)
BashCoreZ delivers Hard Real-Time performance without the huge price tag. Get building. 👊🏻
Ronnieroy
nickbearded
Habr