Raspberry Pi Dramble benchmark for ev3dev

microsd-benchmarks.sh

#!/bin/bash

# Raspberry Pi microSD card benchmark script.
#
# A script I use to automate the running and reporting of benchmarks I compile
# for: http://www.pidramble.com/wiki/benchmarks/microsd-cards
#
# Usage:
#   $ wget https://gist.githubusercontent.com/dlech/e922dbdc870d0e1d2c6065363c189345/raw/microsd-benchmarks.sh
#   $ sudo bash microsd-benchmarks.sh
#
# Another good benchmark:
#   $ curl http://www.nmacleod.com/public/sdbench.sh | sudo bash
#
# Author: Jeff Geerling, 2016

printf "\n"
printf "Raspberry Pi Dramble microSD benchmarks\n"

CLOCK="$(grep "actual clock" /sys/kernel/debug/mmc0/ios 2>/dev/null | awk '{printf("%0.3f MHz", $3/1000000)}')"
if [ -n "$CLOCK" ]; then
  echo "microSD clock: $CLOCK"
fi
printf "\n"

# Fail if $SUDO_USER is empty.
if [ -z "$SUDO_USER" ]; then
  printf "This script must be run with sudo.\n"
  exit 1;
fi

# Variables.
USER_HOME_PATH=$(getent passwd $SUDO_USER | cut -d: -f6)

# Install dependencies.
if [ ! `which hdparm` ]; then
  printf "Installing deps...\n"
  apt-get update
  apt-get install -y hdparm iozone3
  printf "Install complete!\n\n"
fi

# Run benchmarks.
printf "Running hdparm test...\n"
hdparm -t /dev/mmcblk0
printf "\n"

printf "Running dd test...\n\n"
dd if=/dev/zero of=${USER_HOME_PATH}/test bs=8k count=50k conv=fsync; rm -f ${USER_HOME_PATH}/test
printf "\n"

printf "Running iozone test...\n"
iozone -e -I -a -s 100M -r 4k -i 0 -i 1 -i 2
printf "\n"

printf "microSD card benchmark complete!\n\n"