Bonjour,
Les distros d'Audio-Linux et de GentooPlayer offrent des noyaux 'customisés' qui sont en général facturés séparément, et renchérissent le montant de l'abonnement.
Il est maintenant assez facile d'optimiser son propre noyau lors de la compilation.
Un user-guide facile à suivre pour Fedora se trouve ici:
https://linuxconfig.org/how-to-compile-v...-on-fedora
Les sources de la dernière version du noyau sont ici:
https://git.kernel.org/pub/scm/linux/ker...linux.git/
On peut facilement spécifier dans la phase "make menuconfig" que l'on souhaite un noyau temps réel.
Enfin, si l'on souhaite encore affiner, on peut s'appuyer sur les moteurs d'IA pour nous aider.
J'ai ainsi trouvé sur Grok, le moteur concurrent de ChatGPT, le tuto suivant pour optimiser pour un processeur Zen 4 d'AMD.
To optimize the Linux kernel for the AMD Zen 4 architecture in Linux kernel version 6.12, you can follow these steps:
1. **Kernel Configuration:**
- **Use Custom Compilation:**
When compiling the kernel, you need to set specific compiler flags that target the Zen 4 architecture. This can be done by modifying the kernel's make configuration:
```bash
make menuconfig
```
Navigate to:
- **Processor type and features**
- Here, you might not find an explicit option for Zen 4 (znver4) in older or standard kernel configurations, but you can manually set the architecture for compilation:
- **Advanced options**
- **Kernel .config support**
- Set `CONFIG_MZEN4=y` if available. This would typically enable optimizations for the Zen 4 architecture.
- **If `CONFIG_MZEN4` is not available:**
You might need to edit the `.config` file directly or add it to the `Kconfig` if you're customizing the kernel setup. However, for Zen 4, you would usually use:
```bash
echo "CONFIG_MARCH_ZNVER4=y" >> .config
```
Or ensure your make command includes these flags:
```bash
make -j $(nproc) KCFLAGS="-march=znver4 -mtune=znver4" LOCALVERSION=-zn4
```
2. **Compiler Optimization:**
- When building the kernel or any other software for Zen 4, ensure your GCC compiler supports the `-march=znver4` flag. This flag tells the compiler to generate code specifically optimized for Zen 4.
- Check your GCC version for support:
```bash
gcc --target-help | grep znver4
```
- If supported, use:
```bash
export CFLAGS="-march=znver4 -mtune=znver4 -O2 -pipe"
```
This should be added to your environment or included in the kernel's build process.
3. **Microcode Update:**
- Ensure your system's microcode is up-to-date for Zen 4. Although this doesn't directly involve the kernel compilation, having the latest microcode can provide better performance and stability.
- Check for microcode updates in your distribution or manually update via `iucode-tool`.
4. **Performance Monitoring:**
- Utilize perf tools optimized for Zen 4. Linux 6.2 and later versions include enhanced perf counters for AMD Zen 4, which can help in identifying performance bottlenecks.
5. **Documentation and Patches:**
- Review the Linux kernel documentation and any patches specific to Zen 4 optimizations, as these might include tweaks or new features beneficial for your hardware.
6. **Community Resources:**
- Check online forums like Reddit's r/archlinux, Linux Mint forums, or other Linux communities where users might share custom patches or configurations for Ryzen CPUs.
Remember, while these steps can help optimize for Zen 4, the performance gains might be marginal in day-to-day use unless you're running very specific workloads that benefit from the architecture's enhancements. Also, ensure you have backups before experimenting with custom kernel builds, as incorrect configurations can lead to system instability.
Voilà. Plutôt cool de se compiler son propre noyau et de l'installer sur son serveur
