Raspberry Pi Cooling Test
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#!/usr/bin/env bash | |
# A script to test the cooling performance of a RaspberryPi using `sysbench` | |
# Starts a syncbench process in the background and monitors the temperature. | |
# | |
# After the benchmark is complete, keeps the monitoring on to see how much time | |
# does the colling setup take to reach 55°C. | |
log () { | |
echo "$(date -Is)" $@ | |
} | |
SECONDS=0 | |
log "Starting benchmark..." | |
log $(vcgencmd measure_temp | cut -d '=' -f 2) | |
sysbench cpu --threads=4 --events=200000 --time=0 --cpu-max-prime=100000 run & | |
pid=$! | |
# Kill the sysbench when interrupted. | |
trap "jobs -p | xargs -r kill &> /dev/null" EXIT | |
while kill -0 $pid 2> /dev/null || test $(vcgencmd measure_temp | grep -Eo '[0-9]+' | head -1) -gt 56; do | |
log $(vcgencmd measure_temp) $(vcgencmd get_throttled) | |
sleep 2 | |
done | |
duration=$SECONDS | |
echo "$(($duration / 60)) minutes and $(($duration % 60)) seconds elapsed." | |
log "...Done!" |
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