Newbe - LinuxCNC or Mach3

Take a look here...
linuxcnc.org/docs/2.5/html/install/Latency_Test.html
and...
linuxcnc.org/docs/html/config/stepconf.html

Rick G

Hmmm, So outta the box fresh install and update of LinuxCNC 2.7.3 I'm seeing latency of:

Servo 42237(ns)
Base 26936(ns)

Not even close to what some of you are reporting (15000, 8000)

I'm using an ATI X1300

I tried the isolcpus and irqbalance tricvks by adding the kernel options but that didn't work well.
The Latency actually jumped to 46910(ns) . After a bit more research it appears that isolcpus is
no longer needed/used.

caprio wrote: Hmmm, So outta the box fresh install and update of LinuxCNC 2.7.3 I'm seeing latency of:

Servo 42237(ns)
Base 26936(ns)

That will do. It's not spectacular, but it is quite good enough.

Before I got some tweaking going I was sitting at 75000 with spikes taking it up to 150000.

But mine wasn't usable.