Data Loss Analysis

Description

Determine possible reason behind data loss of about 60% using MQTTronic

Debugging

Running Example Measurement on Local Machine

Requirements

• ICOc
• ICOtools

Execution

python3 measure.py && icoanalyzer experiment.hdf5

Results

First Version

Data loss (as reported by icoanalyzer) (commit b7daa140):

OS	1. Attempt	2. Attempt	3. Attempt
macOS	0 %	0 %	0 %
Linux	0.29 %	0.27 %	0.56 %

Second Version

Data loss (as reported by icoanalyzer) (commit 3ccd825d):

OS	1. Attempt	2. Attempt	3. Attempt
macOS	0 %	0 %	0 %
Linux	0.46 %	0.03 %	1.08 %

Third Version

• Collect data for a longer time (three minutes instead of 10 seconds) (commit 9530a279)

OS	1. Attempt	2. Attempt	3. Attempt
macOS	33.09 %	Error (CAN Controller Read Too Late)	33.68 % (CAN Controller Read Too Late)
Linux	33.93 %	34.07 %	33.43 %

Fourth Version

• Collect data for an even longer time (10 minutes) (commit b26b447d)

OS	1. Attempt	2. Attempt	3. Attempt
Linux	33.72 %	33.81 %	33.68 %

Fifth Version

• Collect data for 10 minutes
• Decrease sample rate (1681 Hz)
• Commit 4a33699e

OS	1. Attempt	2. Attempt	3. Attempt
Linux	0.02 %	0.03 %	0.03 %
macOS	0.0 %	0.0 %	0.0 %