live-tests/

README

Live Tests

Conducted with two widgets both connected to the computer via USB and to each other using DMX.

• Live Tests
  • RW Fast
  • Simulate Fader Up
    • Observations

RW Fast

Writer sends changing RGB commands.

go run controller\enttec\dmxusbpro\live-tests\rw-fast\main.go --writer=COM6 --reader=COM5 --read-interval=5 --write-interval=5

Simulate Fader Up

Simulates a fader (controlling multiple DMX channels) being moved up.

go run controller\enttec\dmxusbpro\live-tests\simulate-fader-up\main.go --writer=COM6 --reader=COM5 --read-interval=5 --write-interval=5 --changes-only=true

Observations

Running the 'fader-up' live test with different parameters.

Legend:

Title	Meaning
Interval (R) [millis]	read interval in milliseconds
Interval (W) [millis]	write interval in milliseconds
Changes only?	are we using DMX Change Of State Packets?
rountrip-time [millis]	time (in milliseconds) taken from about-to-write to read-back-in.
Writes/Reads	Ratio between writes and reads. Numbers > 1 mean we have more writes than reads and vice versa

roundtrip-time was calculated for random entries (e.g. channel 1 being set to 120), using the log timestamp difference between WRITER and READER (e.g. the reader received 120)

Experiments:

Interval (R) [millis]	Interval (W) [millis]	Changes only?	rountrip-time [millis]	Writes/Reads
1	1	no	30-70	2/1
1	1	yes	10-30	2/1
5	5	no	~50	2/1
5	5	yes	20-30	3/2
12	12	no	30-70	5/3
12	12	yes	20-30	3/2
16	16	no	40-80	1/1
16	16	yes	~40	1/1
25	25	no	~70	5/6
25	25	yes	40-70	1/1