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https://github.com/dchakro/storage-speed-test.git
synced 2024-10-23 08:29:37 -07:00
59 lines
1.5 KiB
Bash
Executable file
59 lines
1.5 KiB
Bash
Executable file
#!/bin/bash
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# Created by Alexander aka BioDranik <me@alex.bio> in Minsk, Belarus
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set -eu
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if [ $# -lt 1 ]; then
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echo "Usage: $0 <path_to_directory_where_to_test_read_and_write_speed>"
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exit 1
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fi
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SD_DIR=$1
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FILENAME="$SD_DIR/file_speed_test.deleteme"
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SIZE=1000 # in MB
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if [[ "$OSTYPE" == "darwin"* ]]; then
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WRITE_FILE_COMMAND="mkfile ${SIZE}m $FILENAME"
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CLEAR_CACHE_COMMAND="purge"
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else
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WRITE_FILE_COMMAND="dd if=/dev/zero of=$FILENAME bs=1M count=$SIZE oflag=direct"
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CLEAR_CACHE_COMMAND='sh -c echo 3 > /proc/sys/vm/drop_caches'
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fi
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READ_FILE_COMMAND="cat $FILENAME > /dev/null"
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RunTimeInSeconds() {
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local TIMEFORMAT=%R
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RES=`{ time $@ >/dev/null 2>&1; } 2>&1`
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echo $RES
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}
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ClearFileCache() {
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if sudo -n false 2>/dev/null; then
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echo "Administrator password is required to clear file cache and get correct read test results."
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fi
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sudo $CLEAR_CACHE_COMMAND
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}
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WriteFile() {
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echo "Writing ${SIZE}MB file $FILENAME..."
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local WRITE_SECONDS=`RunTimeInSeconds $WRITE_FILE_COMMAND`
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if [ -f "$FILENAME" ]; then
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local WRITE_SPEED=$( echo "scale=2; $SIZE/$WRITE_SECONDS" | bc -l)
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echo "Average sequential write speed: ${WRITE_SPEED}MB/sec."
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else
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echo "Error writing file $FILENAME"
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false
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fi
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}
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ReadFile() {
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local READ_SECONDS=`RunTimeInSeconds $READ_FILE_COMMAND`
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local READ_SPEED=$( echo "scale=2; $SIZE/$READ_SECONDS" | bc -l)
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echo "Average sequential read speed: ${READ_SPEED}MB/sec."
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}
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WriteFile
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# Always delete created file on exit.
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trap "rm $FILENAME" 0
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ClearFileCache
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ReadFile
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