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Update README.md with info related to #96

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Andrea Bondavalli 2022-11-17 21:59:50 +01:00 committed by GitHub
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@ -125,7 +125,9 @@ The NanoPi NEO2 with Allwinner H5 Quad-core 64-bit Cortex A53 processor.
See [Armbian NanoPi NEO2 ](https://www.armbian.com/nanopi-neo-2/) for additional information about how to setup Ubuntu on this board. See [Armbian NanoPi NEO2 ](https://www.armbian.com/nanopi-neo-2/) for additional information about how to setup Ubuntu on this board.
The [ubuntu-packages.sh](ubuntu-packages.sh) script can be used to install all the packages required to compile and run the AES67 daemon, and the [platform compatibility test](#test). The [ubuntu-packages.sh](ubuntu-packages.sh) script can be used to install all the packages required to compile and run the AES67 daemon, and the [platform compatibility test](#test).
**_Important_** CPU scale events could affect daemon streams adding unexpected distortions, see [CPU scale events and scripts notes](#notes).
**_Important_** CPU scale events could affect daemon streams causing unexpected distortions, see [CPU scale events and scripts notes](#notes).
**_Important_** _PulseAudio_ must be disabled or uninstalled for the daemon to work properly, see [PulseAudio and scripts notes](#notes). **_Important_** _PulseAudio_ must be disabled or uninstalled for the daemon to work properly, see [PulseAudio and scripts notes](#notes).
## How to build ## ## How to build ##
@ -273,15 +275,15 @@ Before running the daemon make sure you disable CPU scaling events:
Check if CPU scaling is enabled with: Check if CPU scaling is enabled with:
cat /proc/sys/kernel/perf_cpu_time_max_percent cat /proc/sys/kernel/perf_cpu_time_max_percent
If result is not 0, (it's usually set to 25) set it to 0 with: If result is not 0, (it's usually set to 25) set it to 0 with:
sudo sysctl -w kernel.perf_cpu_time_max_percent=0 sudo sysctl -w kernel.perf_cpu_time_max_percent=0
You may also want to review the current CPU scaling governor with (cpu0 in this case): You may also want to review the current CPU scaling governor with (cpu0 in this case):
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
See https://www.kernel.org/doc/Documentation/cpu-freq/governors.txt for dditional info. See https://www.kernel.org/doc/Documentation/cpu-freq/governors.txt for dditional info.
* **PulseAudio** can create instability problems. * **PulseAudio** can create instability problems.