RPi and powerd, was: Re: RPI4 clock speeds and serial port ( temperatures idle and -j4 buildworld buildkernel )

[Mark Millard]

On 2021-Mar-23, at 06:56, tech-lists <tech-lists at zyxst.net> wrote:

> Hi,
> 
> latest build run:

Had a -mcpu=cortext-a72 world and kernel been
installed and booted first? Was the system
running a world and kernel that had not been
tuned for the Cortex-A72?

>>>> World built in 22976 seconds, ncpu: 4, make -j6
> --------------------------------------------------------------
> 
> 6 Hours : 22 Minutes : 56 Seconds
> 
> created kernel.bin from kernel.full
> --------------------------------------------------------------
>>>> Kernel build for GENERIC-NODEBUG completed on Mon Mar 22 13:54:53
>>>> UTC 2021
> --------------------------------------------------------------
>>>> Kernel(s)  GENERIC-NODEBUG built in 2086 seconds, ncpu: 4, make -j6
> --------------------------------------------------------------
> 
> 0 Hours : 34 Minutes : 46 Seconds
> 
> commands used:
> 1. cd /usr/src
> 2. git pull --ff-only
> 3. make -j10 cleanworld
> 4. make -j10 cleandir
> 5. make -j10 clean

This does not show ccache being cleared out
before the below. So the times may be examples
of "with ccache benefit" times. The contrast
with mine and Bob P.'s times suggests a
nice time-benefit can occur.

> 6. make -j6 buildworld
> 7. make -j6 buildkernel
> 
> here's the src.conf :
> https://cloud.zyxst.net/~john/FreeBSD/rpi4-main/src.conf

I seem to get intermittent access to
https://cloud.zyxst.net/ but got to
see the file content eventually.

> relevant rc.conf settings:
> powerd_enable="YES"
> powerd_flags="-r 1"
> 
> sysctl.conf settings:
> vfs.read_max=128 # default 64 # Cluster read-ahead max block count
> 
> config.txt:
> kernel=u-boot.bin
> over_voltage=6
> arm_freq=2000
> sdram_freq_min=3200
> 

Thanks much for the information.


===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)