Mesa 7i97 Watchdog has bit!

PCW wrote:

This means your host PC or operating system has real-time issues.
(this is expected if you still get the "using POSIX non-realtime" warning at startup)

Can you run:

latency-histogram --nobase --sbinsize 1000

and post the results here?
 

PCW wrote:

This means your host PC or operating system has real-time issues.
(this is expected if you still get the "using POSIX non-realtime" warning at startup)

 

PCW wrote:

Yes, that is unusably large latency

Have you gone through the BIOs settings and disabled all power management,
hyperthreading, Cstates > C1, AMT etc?
 
Also your CPU uses Intel MACS so you must disable IRQ coalescing
(this is described in the hm2_eth manual page)

Here is a similar CPU with all power management and AMT disabled:

 

 

arnold@cnchp:~$  latency-histogram --nobase --sbinsize 1000
cannot gain I/O privileges - forgot 'sudo make setuid'?
Note: Using POSIX non-realtime
arnold@cnchp:~$

arnold@cnchp:~$ sudo latency-histogram --nobase --sbinsize 1000
[sudo] password for arnold:
Refusing to run as root without fallback UID specified
To run under a debugger with I/O, use e.g.,
    sudo env RTAPI_UID=`id -u` RTAPI_FIFO_PATH=$HOME/.rtapi_fifo gdb /usr/bin/rtapi_app
waitpid failed /usr/bin/rtapi_app threads
/usr/bin/rtapi_app exited without becoming ready
insmod for threads failed, returned -1
    while executing
"hal loadrt threads name1=t_servo period1=1000000"
    ("eval" body line 1)
    invoked from within
"eval hal loadrt threads "$args""
    (procedure "start_collection" line 7)
    invoked from within
"start_collection"
    invoked from within
"if ![info exists ::LH(start)] {
  set_defaults
  config
  progress "Loading packages"
  load_packages
  signal trap SIGINT finish
  progress "Making g..."
    (file "/usr/bin/latency-histogram" line 840)
arnold@cnchp:~$

PCW wrote:

This is the root of your latency issues:

cannot gain I/O privileges - forgot 'sudo make setuid'?
Note: Using POSIX non-realtime

Something is broken with your LinuxCNC installation
How did you Install LinuxCNC? (step by step)
Unless the latest LinuxCNC ISO is broken, I suspect
some installation problem

 

PCW wrote:

It may be usable but in general laptops have power management
that cannot be disabled and will often have large latency spikes
(say when you adjust the display brightness)

I don't actually see what BIOS settings could have to do with
Linux permissions, that really looks like an installation issue of some
kind on the 8300.