PREEMPT_RT Kernel 6.6.50-rt42 for Raspberry Pi

Raspberry Pi realtime Kernel 6.6.50-rt42

This is a PREEMPT_RT kernel build. 64 bit packages for Raspberry Pi 4 & 5 are included.

deb packages are attached below. For installation or build instructions, see the repo wiki:
https://github.com/kdoren/linux/wiki

For this release, in installation instructions:

KERN=6.6.50-rt42-v8+         # Pi4 64-bit kernel
KERN=6.6.50-rt42-v8-16k+     # Pi5 64-bit kernel

Note: This release fixes a bug in kernel version 6.6.36. which broke WiFi on Raspberry Pi 5.

PREEMPT_RT Kernel 6.6.35-rt34 for Raspberry Pi

Raspberry Pi realtime Kernel 6.6.35-rt34

Warning: This release contains a bug which breaks WiFi on Raspberry Pi 5. Please use a newer release.

This is a PREEMPT_RT kernel build. 64 bit packages for Raspberry Pi 4 & 5 are included.

deb packages are attached below. For installation or build instructions, see the repo wiki:
https://github.com/kdoren/linux/wiki

For this release, in installation instructions:

KERN=6.6.35-rt34-rpi-v8+       # Pi4 64-bit kernel
KERN=6.6.35-rt34-rpi-2712+     # Pi5 64-bit kernel

Note: The linux-image packages will show an error message when installing with apt, which is OK because that means it isn't overwriting the stock kernel. This allows easy switching between kernels.

PREEMPT_RT kernel 6.1.54-rt15 for Raspberry Pi

Raspberry Pi realtime Kernel 6.1.54-rt15

This is a PREEMPT_RT kernel build. Both 32 and 64 bit packages are included.
32-bit version works on Pi3 and Pi4. 64-bit version works only on Pi4.
64-bit kernel can be installed on 32-bit system.

deb packages are attached below. For installation or build instructions, see the repo wiki:
https://github.com/kdoren/linux/wiki

For this release, in installation instructions:

KERN=6.1.54-rt15-v7l+   # 32-bit kernel
KERN=6.1.54-rt15-v8+    # 64-bit kernel

Low-Latency PREEMPT kernel 6.1.54-llat for Raspberry Pi

Raspberry Pi Low-Latency PREEMPT Kernel 6.1.54-llat

This is a Low-Latency PREEMPT kernel build. Both 32 and 64 bit packages are included.
64-bit kernel can be installed on 32-bit system.

This is built from unpatched raspberrypi/linux sources, with config options PREEMPT, 1000 Hz timer, performance CPU governor.

You may find that this kernel gives better results for your application than PREEMPT_RT, with less tuning effort, even though it does not score as well on synthetic latency tests. This might be because PREEMPT_RT on RPi introduces spinlocks to avoid conflict with RPi OS use of FIQ.

deb packages are attached below. For installation or build instructions, see the repo wiki:
https://github.com/kdoren/linux/wiki

For this release, in installation instructions:

KERN=6.1.54-llat-v7l+   # 32-bit kernel
KERN=6.1.54-llat-v8+    # 64-bit kernel

PREEMPT_RT kernel 5.15.65-rt49 for Raspberry Pi

Raspberry Pi realtime Kernel 5.15.65-rt49

This is a PREEMPT_RT kernel build. Both 32 and 64 bit packages are included.
32-bit version works on Pi3 and Pi4. 64-bit version works only on Pi4.
64-bit kernel can be installed on 32-bit system.

deb packages are attached below. For installation or build instructions, see the repo wiki:
https://github.com/kdoren/linux/wiki

For this release, in installation instructions:

KERN=5.15.65-rt49-v7l+   # 32-bit kernel
KERN=5.15.65-rt49-v8+    # 64-bit kernel

Low-Latency PREEMPT kernel 5.15.65-llat for Raspberry Pi

Raspberry Pi Low-Latency PREEMPT Kernel 5.15.65-llat

This is a Low-Latency PREEMPT kernel build. Both 32 and 64 bit packages are included.
64-bit kernel can be installed on 32-bit system.

This is built from unpatched raspberrypi/linux sources, with config options PREEMPT, 1000 Hz timer, performance CPU governor.

You may find that this kernel gives better results for your application than PREEMPT_RT, with less tuning effort, even though it does not score as well on synthetic latency tests. This might be because PREEMPT_RT on RPi introduces spinlocks to avoid conflict with RPi OS use of FIQ.

deb packages are attached below. For installation or build instructions, see the repo wiki:
https://github.com/kdoren/linux/wiki

For this release, in installation instructions:

KERN=5.15.65-llat-v7l+   # 32-bit kernel
KERN=5.15.65-llat-v8+    # 64-bit kernel

PREEMPT_RT kernel 5.15.40-rt43 for Raspberry Pi

Raspberry Pi realtime Kernel 5.15.40-rt43

This is a PREEMPT_RT kernel build. Both 32 and 64 bit packages are included.
32-bit version works on Pi3 and Pi4. 64-bit version works only on Pi4.
64-bit kernel can be installed on 32-bit system.

deb packages are attached below. For installation or build instructions, see the repo wiki:
https://github.com/kdoren/linux/wiki

For this release, in installation instructions:

KERN=5.15.40-rt43-v7l+   # 32-bit kernel
KERN=5.15.40-rt43-v8+    # 64-bit kernel

Low-Latency PREEMPT kernel 5.15.40-llat for Raspberry Pi

Raspberry Pi Low-Latency PREEMPT Kernel 5.15.40-llat

This is a Low-Latency PREEMPT kernel build. Both 32 and 64 bit packages are included.
64-bit kernel can be installed on 32-bit system.

This is built from unpatched raspberrypi/linux sources, with config options PREEMPT, 1000 Hz timer, performance CPU governor.

You may find that this kernel gives better results for your application than PREEMPT_RT, with less tuning effort, even though it does not score as well on synthetic latency tests. This might be because PREEMPT_RT on RPi introduces spinlocks to avoid conflict with RPi OS use of FIQ.

deb packages are attached below. For installation or build instructions, see the repo wiki:
https://github.com/kdoren/linux/wiki

For this release, in installation instructions:

KERN=5.15.40-llat-v7l+   # 32-bit kernel
KERN=5.15.40-llat-v8+    # 64-bit kernel

PREEMPT_RT kernel 5.15.32-rt39 for Raspberry Pi

Raspberry Pi realtime Kernel 5.15.32-rt39

This is a PREEMPT_RT kernel build. Both 32 and 64 bit packages are included.
32-bit version works on Pi3 and Pi4. 64-bit version works only on Pi4.
64-bit kernel can be installed on 32-bit system.

deb packages are attached below. For installation or build instructions, see the repo wiki:
https://github.com/kdoren/linux/wiki

For this release, in installation instructions:

KERN=5.15.32-rt39-v7l+   # 32-bit kernel
KERN=5.15.32-rt39-v8+    # 64-bit kernel

Low-Latency PREEMPT kernel 5.15.32-llat for Raspberry Pi

Raspberry Pi Low-Latency PREEMPT Kernel 5.15.32-llat

This is a Low-Latency PREEMPT kernel build. Both 32 and 64 bit packages are included.
64-bit kernel can be installed on 32-bit system.

This is built from unpatched raspberrypi/linux sources, with config options PREEMPT, 1000 Hz timer, performance CPU governor.

You may find that this kernel gives better results for your application than PREEMPT_RT, with less tuning effort, even though it does not score as well on synthetic latency tests. This might be because PREEMPT_RT on RPi introduces spinlocks to avoid conflict with RPi OS use of FIQ.

deb packages are attached below. For installation or build instructions, see the repo wiki:
https://github.com/kdoren/linux/wiki

For this release, in installation instructions:

KERN=5.15.32-llat-v7l+   # 32-bit kernel
KERN=5.15.32-llat-v8+    # 64-bit kernel