Provided by: isochron_0.9~rc4-1_amd64 
NAME
isochron-orchestrate - Coordinate isochron daemons
SYNOPSIS
isochron orchestrate [OPTIONS]
DESCRIPTION
This command opens an orchestration file containing descriptions of daemons: how to reach
them, their names, roles and parameters for the test. It connects to these daemons,
informs them of their parameters, and coordinates them such that they start sending
traffic only when their synchronization offset becomes lower than the required threshold.
After the test is done, the packet logs are gathered by the orchestrator from each sender
and its associated receiver, and saved on the local filesystem.
OPTIONS
-h, --help
prints the short help message and exits
-F, --input-file <PATH>
specify the path to the input orchestration file.
ORCHESTRATION FILE FORMAT
The orchestration file has an INI-style format supporting multi-line statements, and with
comments being delineated by the # character. Each section denotes an orchestration node,
and the lines that follow have a “key = value” format that describe parameters for this
node.
host denotes the IP address through which the isochron daemon can be reached by the
orchestrator.
port denotes the TCP port through which the isochron daemon can be reached by the
orchestrator.
exec denotes the command to be executed by the isochron daemon. The syntax is identical
to what would be specified as command line arguments to isochron-send. The
expected behavior of a daemon in the role of a sender is also identical to that of
a dedicated sender, with some exceptions. The --output-file is interpreted by the
orchestrator, not by the daemon (therefore, files are saved on the orchestrator’s
filesystem). Communication through the management socket does not take place
between an orchestrated sender and its receiver. Instead, the orchestrator deduces
the address and port of the receiver through the --client and --stats-port
arguments of the sender, and connects by itself to the receiver. An orchestrated
sender does not monitor sync status by itself and does not decide when to start
sending test packets. Instead, these are controlled by the orchestrator.
EXAMPLES
It is possible to orchestrate two senders running on hosts A (10.0.0.1) and B (10.0.0.2),
sending towards two receivers both on host C (10.0.0.3), from a management node D, for the
purpose of creating packet collisions and measuring the resulting latency.
The commands on nodes A and B are:
ptp4l -i eth0 -2 -P --step_threshold 0.00002 &
phc2sys -a -rr --step_threshold 0.00002 &
isochron daemon
The commands on node C are:
ptp4l -i eth0 -2 -P --step_threshold 0.00002 &
phc2sys -a -rr --step_threshold 0.00002 &
isochron rcv --interface eth0 --stats-port 5000 --etype 0xdead &
isochron rcv --interface eth0 --stats-port 5001 --etype 0xdeaf &
The commands on node D are (the double backslashes are to prevent the shell from
interpreting them when creating the heredoc, the resulting file will have simple
backslashes):
cat <<- EOF > orchestration.txt
[A]
host = 10.0.0.1
port = 5000
exec = isochron send \\
--client 10.0.0.3 \\
--stats-port 5000 \\
--interface eth0 \\
--num-frames 10 \\
--base-time 0.000000000 \\
--cycle-time 0.01 \\
--frame-size 1500 \\
--sync-threshold 100 \\
--cpu-mask 0x1 \\
--sched-fifo \\
--sched-priority 98 \\
--etype 0xdead \\
--output-file isochron-host-a.dat
[B]
host = 10.0.0.2
port = 5000
exec = isochron send \\
--client 10.0.0.3 \\
--stats-port 5001 \\
--interface eth0 \\
--num-frames 10 \\
--base-time 0.000000100 \\
--cycle-time 0.01 \\
--frame-size 1500 \\
--sync-threshold 100 \\
--cpu-mask 0x1 \\
--sched-fifo \\
--sched-priority 98 \\
--etype 0xdeaf \\
--output-file isochron-host-b.dat
EOF
isochron orchestrate --input-file orchestration.txt
isochron report --summary --input-file isochron-host-a.dat
isochron report --summary --input-file isochron-host-b.dat
AUTHOR
isochron was written by Vladimir Oltean <vladimir.oltean@nxp.com>
SEE ALSO
isochron(8) isochron-send(8) isochron-daemon(8)
COMMENTS
This man page was written using pandoc (http://pandoc.org/) by the same author.
isochron-orchestrate(1)