latency-histogram - plot a histogram of machine latency
latency-histogram [-?|--help] [--base ns] [--servo ns] [--bbinsize ns] [--sbinsize ns] [--bbins ns] [--sbins ns] [--logscale 0|1] [--text note] [--show] [--nobase] [--verbose] [--nox]
The latency test is important when configuring a LinuxCNC system. An adjunct to the standard latency-test latency-histogram plots the distribution of latency. This can be useful to get a feel for how frequent the high latency excursions are.
LinuxCNC and HAL should not be running, stop with halrun -U. Large number of bins and/or small binsizes will slow updates. For single thread, specify --nobase (and options for servo thread). Measured latencies outside of the +/- bin range are reported with special end bars. Use --show to show count for the off-chart [pos|neg] pin.
More details: https://linuxcnc.org/docs/html/install/latency-test.html
-?, --help
Show options and exit.
--base ns
base thread interval, default: 25000, min: 5000
--servo ns
servo thread interval, default: 1000000, min: 25000
--bbinsize ns
base bin size, default: 100
--sbinsize ns
servo bin size, default: 100
--bbins ns
base bins, default: 200
--sbins ns
servo bins, default: 200
--logscale 0|1
y axis log scale, default: 1
--text note
additional note, default: ""
|
--show |
show count of undisplayed bins |
--nobase
servo thread only
--verbose
progress and debug
|
--nox |
no GUI, display elapsed, min, max, sdev for each thread |
latency-plot(1), latency-test(1), linuxcnc(1)
Much more information about LinuxCNC and HAL is available in the LinuxCNC and HAL User Manuals, found at /usr/share/doc/linuxcnc/.
None known at this time.
This man page written by andypugh, as part of the LinuxCNC project.
Report bugs at https://github.com/LinuxCNC/linuxcnc/issues
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© 2020 andypugh.
This is free software; see the source for copying
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