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software:linux:realtime:preempt_rt:start [2019-01-15 13:02] – angelegt mgehrig2software:linux:realtime:preempt_rt:start [2023-04-11 09:52] – Urs Graf
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-====== Preempt_RT ======+====== Preempt-RT ======
 <box blue right 22% | **Linux Preempt_RT**> <box blue right 22% | **Linux Preempt_RT**>
 {{.:preemptrtlogo.png|Preempt_RT}} {{.:preemptrtlogo.png|Preempt_RT}}
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 ===== Introduction ===== ===== Introduction =====
 Preempt_RT is a patch for the Linux kernel maintained by Ingo Molnar. It modifies the kernel so that it becomes (almost) completely preemptive. The classic kernel spinlocks are replaced by mutexes which support priority inheritance. In addition, the handling of all interrupts is outsourced to separate kernel threads. Preempt_RT is a patch for the Linux kernel maintained by Ingo Molnar. It modifies the kernel so that it becomes (almost) completely preemptive. The classic kernel spinlocks are replaced by mutexes which support priority inheritance. In addition, the handling of all interrupts is outsourced to separate kernel threads.
-The presentation {{:software:linux:preempt_rt:s3r2_jan_altenberg.pdf| Linux und Echtzeit}} (German) by Jan Altenberg offers a very good and short summary regarding the two variants Preemt RT and Xenomai.+The presentation {{:software:linux:preempt_rt:s3r2_jan_altenberg.pdf| Linux und Echtzeit}} (German) by Jan Altenberg offers a very good and short summary about Preemt-RT and Xenomai. 
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 +<box 22% right green | **Quicklinks**> 
 +  * [[..:testedDevices | Tested devices]] 
 +</box>
  
  
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   - Choose a machine. See [[..:testedDevices | Tested devices]] for reference   - Choose a machine. See [[..:testedDevices | Tested devices]] for reference
   - Install a Linux distribution. You can use [[https://unetbootin.github.io/ | UNetbootin]] to create an bootable Live USB drive.   - Install a Linux distribution. You can use [[https://unetbootin.github.io/ | UNetbootin]] to create an bootable Live USB drive.
- +  - To test the best possible RT performance [[software:linux:realtime:preempt_rt:build_kernel|compile a minimal preemt RT kernel]] 
-<box 22% right green | **Quicklinks**> +  - [[software:linux:realtime:tune_bios_settings|Tune some BIOS settings]] 
-  * [[..:testedDevices | Tested devices]] +  - [[software:linux:realtime:benchmark:optimal_performance|Measure the best possible RT performance of your system]] 
-</box>+  - [[software:linux:realtime:preempt_rt:build_kernel|Compile a full preempt RT kernel]] 
 +  - [[software:linux:realtime:benchmark:start|Test your system]] 
 +  - [[software:linux:realtime:stresstests|Test your system with stress tests]] 
 +  - If you are not satisfied with the performance of your system, [[software:linux:realtime:tune_rt_system|tune your system]].

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