LinuxCNC_Documentation.pdf
- Patrick Obrien
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15 Oct 2016 10:31 #81666
by Patrick Obrien
LinuxCNC_Documentation.pdf was created by Patrick Obrien
On page 280 5.3.1.1 Run a Latency Test the text:
"The last number in the column labeled "ovl max" is the most important."
refers to a paragraph which has been deleted. I found it in older versions, as follows:
"The last number in the column labeled "ovl max" is the most important."
refers to a paragraph which has been deleted. I found it in older versions, as follows:
sudo mkdir /dev/rtf; sudo mknod /dev/rtf/3 c 150 3;
sudo mknod /dev/rtf3 c 150 3;
cd /usr/realtime*/testsuite/kern/latency; ./run
and then you should see something like this:
ubuntu:/usr/realtime-2.6.12-magma/testsuite/kern/latency$ ./run
*
*
* Type ^C to stop this application.
*
*
## RTAI latency calibration tool ##
# period = 100000 (ns)
# avrgtime = 1 (s)
# do not use the FPU
# start the timer
# timer_mode is oneshot
RTAI Testsuite - KERNEL latency (all data in nanoseconds)
RTH| lat min| ovl min| lat avg| lat max| ovl max| overruns
RTD| -1571| -1571| 1622| 8446| 8446| 0
RTD| -1558| -1571| 1607| 7704| 8446| 0
RTD| -1568| -1571| 1640| 7359| 8446| 0
RTD| -1568| -1571| 1653| 7594| 8446| 0
RTD| -1568| -1571| 1640| 10636| 10636| 0
RTD| -1568| -1571| 1640| 10636| 10636| 0
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