sorta related timer comment

sorta related timer comment

[gene heskett]

Sebastion;

I should probably point out that there is a group of linuxcnc users who 
depend on that 1 kilohertz thread while controlling their cnc machinery.
I personally have even used 4 kilohertz for the servo update loop but 
only on the faster intel cpu's. Older AMD's don't cut it.

We, several hundred of us planet wide, would not be well served if 250 
hz became the default, we could crash a machine because we couldn't stop 
it in time. To save hardware costs, we even use a 25 microsecond thread, 
but only allow integer math there, driving stepper motors directly in 
slower home hobby stuff.  We would be well served by arm64 stuff if it 
can be worked in. I am running a bigger lathe with an rpi4b, 2 gigs of 
dram but the kernel I'm using is now a 3 years old 4.19-preempt-rt for 
armhf getting long in the tooth now.

Take care & stay well all.

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/>