Tag: patching

• #Rapberry Pi: Preempt-RT Kernel Performance on Rasbperry PI 3 Model B+

  Real Time Systems | 3 min | 12517

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  preempt-rt

  standard

  kernel

  patching

  raspberry pi 3 B plus

  The Raspberry Pi 3 Model B+ (Fig. 1) is now on sale and I bought one two weeks ago. The main modifications are the followings:

  • A 1.4GHz 64-bit quad-core ARM Cortex-A53 CPU
  • Dual-band 802.11ac wireless LAN and Bluetooth 4.2
  • Faster Ethernet (Gigabit Ethernet over USB 2.0)
  • Power-over-Ethernet support (with separate PoE HAT)
  • Improved PXE network and USB mass-storage booting
  • Improved thermal management

  Fig. 1: Raspberry Pi 3 Model B+

  The Raspberry Pi uses now the LAN2515 chip from Microchip instead of the LAN9514 for Ethernet and the USB Ports.

  If you are looking for some Benchmarkin...

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• #Raspberry PI Zero W: Preempt-RT Kernel Performance

  Real Time Systems | 2 min | 9075

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  preempt-rt

  performance

  standard

  kernel

  patching

  raspberry pi zero

  Today I patched the kernel of a Raspberry Pi Zero W with Preempt-RT. I used the repo TiejunChina.

  Update 18.03.2018: The official Preempt-RT patched Rasbian repo is here.

  ##~/rpi-kernel$ git clone https://github.com/TiejunChina/linux.git # update 18.03.2018: old repository##
  
  ~/rpi-kernel$ git clone https://github.com/raspberrypi/linux.git # update 18.03.2018: new repository
  ~/rpi-kernel$ cd linux
  ~/rpi-kernel/linux$ git checkout rpi-4.14.y-rt  # today the kernel version is 4.14.22
                                                  # with rt17 resulting in 4.14.22-rt17+ 

  You can find a complet...

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