On 5/22/23 07:13, Greg Troxel wrote:
gene heskett <[email protected]> writes:
Which file in the nut I pulled a month ago, should I start with to get
the new version actually running? I still get - -V=2.7.4
It is likely that you have built new nut but old nut is still on your
system. I do a 'sudo make install' to write over the distribution nut
(on NetBSD/pkgsrc, surely not what you are using).
.
from that buster install on an rppi4b:
uname -a:
Linux rpi4.coyote.den 4.19.71-rt24-v7l+ #1 SMP PREEMPT RT Thu Feb 6
07:09:18 EST 2020 armv7l GNU/Linux
which is a homebrewed pinned kernel for machinery control, built from
linux-rt srcs and installed by me, first ti 2015 or so on an rpi3b but
the 4b has lots more giddyup. I did this originally to see if it would
be done, first on the planet and my questions did not fit the fundation
image of what they figured the pi was for. So I'm banned from al pi
related forums etc.
They see it as an entertainment toy, and actually doing something useful
was blasphemous. Tuff titty said this old Iowa farm boy.
I've since added a pile of arm stuff here at the Heskett ranchette.
Most recently a 4 pack of banana pi m5's running armbian bullseye,
driving 3d printers. Pretty good for an 88 yo. The pi folks would not
tell me how to install that kernel, so I made a 28 meg tarball out of
it, you can download that tarball from my web page in the sig, install
raspios in armhf flavor to the sd card, unpack that tarball and copy the
two directories to the sd card, put the card back in the pi and reboot,
instant realtime preempt kernel.
Your trivia factoid for the day. armhf because the stack frame is
smaller, making the preempt faster. latency-test if I'm not browsing the
web with firefox is 12 microseconds. Fast enough to run 1500 lbs of a 85
yo lathe, correcting for its wear and tear over the years.
But now I'm trying to make a newer nut than 2.7.4 run on it...
I just checked one of the arm64's running armbian bullseye, and the nut
available from the debian arm64 repo's is still 2.7.4-13, so there
really is not a newer one from debian, that is 5 years old!
Thanks Greg, take care & stay well.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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