Re: Raspberry Pi Zero W earmv6hf notes

[Ramiro Aceves <ea1abz%gmail.com@localhost>]

El 18 de julio de 2024 1:47:13 CEST, John Klos <john%klos.com@localhost> escribió:
>Hi, all,
>
>earmv6hf on the Raspberry Pi Zero W works well, including changing the CPU frequency while using the serial console. Wifi works out of the box, too, although I haven't used it extensively yet.

Thanks John for the information and compilation times! It would never have occurred to me compile NetBSD system on it.

Internal WiFi works badly in my own experience. For that reason I bought an external dongle.

It works solid for home media server and drains very little power.

Regards.
Ramiro.



>
>I just built netbsd-10, both the OS and kernel, for the Pi on the Pi, with interesting results:
>
>Kernel:
>build.sh started:    Wed Jul 17 15:42:02 UTC 2024
>build.sh ended:      Wed Jul 17 18:56:58 UTC 2024
>11697.03 real      9622.98 user      1111.49 sys
>
>netbsd-10:
>build.sh started:    Fri Jul 12 08:01:19 UTC 2024
>build.sh ended:      Wed Jul 17 09:56:20 UTC 2024
>
>/usr/bin/time -l told us:
>
>   438902.38 real    358555.20 user     44338.02 sys
>    285228  maximum resident set size
>-1704612098  average shared memory size
>         2  average unshared data size
>         1  average unshared stack size
> 470963930  page reclaims
>    129300  page faults
>         0  swaps
>     58797  block input operations
>    188118  block output operations
>         0  messages sent
>         0  messages received
>      5498  signals received
>   3875196  voluntary context switches
>  11400005  involuntary context switches
>
>
>Love the average shared memory size :D
>
>Interestingly, it took about 122 hours for the Pi to compile netbsd-10, where a single core of a Ryzen 5500 took about 1.85 hours. This makes the Ryzen about 66 times faster than the Pi, or a little more than 16 times faster adjusted for clock speed (1 GHz compared with between 3.6 and 4.2 GHz).
>
>Regardless, it works and makes for a stable and happy mail server. Much thanks to everyone working on NetBSD on ARM :)
>
>John