Basic latency test script for fun

Installing and Using OpenWrt
1

I modeled this after the dslreports test somewhat. I'm sure someone else can make this puppy a beast.

#!/bin/sh

# This script is mostly intended to run while performing a throughout test
# It can also be used for other purposes to measure latency across various links :>)

# https://www.dslreports.com */ mobile app version available */
# https://www.speedtest.com */ mobile app version available */
# https://www.nperf.com */ mobile app version available */
# https://www.librespeed.org */ ??? */
# iperf */ mobile app version avalable */

# Enter your average idle ping time, whole numbers only
# Best to have NO network activity happening while looking for the average idle time
AVG_IDLE=38

# Server to send icmp echo requests to
IP=8.8.8.8

# Number of times to ping the server
# Usually most speed tests actually run for ~40 seconds
COUNT=60


MAX=$( ping -c $COUNT -q -n $IP | cut -d "/" -s -f4 | cut -d "." -f1 )


if [ "$MAX" -lt "$((AVG_IDLE + 5))" ]; then
        echo "Latency = A+  $MAX ms"

elif [ "$MAX" -gt "$((AVG_IDLE + 5))" ] && [ "$MAX" -lt "$((AVG_IDLE + 30))" ]; then
        echo "Latency = A  $MAX ms"

elif [ "$MAX" -gt "$((AVG_IDLE + 30))" ] && [ "$MAX" -lt "$((AVG_IDLE + 60))" ]; then
        echo "Latency = B  $MAX ms"

elif [ "$MAX" -gt "$((AVG_IDLE + 60))" ] && [ "$MAX" -lt "$((AVG_IDLE + 200))" ]; then
        echo "Latency = C  $MAX ms"

elif [ "$MAX" -gt "$((AVG_IDLE + 200))" ] && [ "$MAX" -lt "$((AVG_IDLE + 400))" ]; then
        echo "Latency = D  $MAX ms"

else
        echo "Latency = F  $MAX ms"

fi

exit 0
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