Quick and dirty benchmark for large directories in Unraid

benchmark_shfs.sh

#!/bin/bash

# benchmark_shfs.sh version 0.2

LOG_FILE="/boot/benchmark_shfs.log"
TEST_PATH="Download/benchmark"
DISK_PATH="/mnt/disk4/$TEST_PATH"
SHFS_PATH="/mnt/user/$TEST_PATH"
LS_COMMAND="/bin/ls -l --color=never"

time_command () {
    t=$( { time -p "$@" &>/dev/null; } 2>&1)
    t=${t//[$'\t\r\n ']}
    t=${t#real}
    t=${t%%user*}

    echo "$t"
}

source /etc/unraid-version
source /boot/config/share.cfg
echo "Unraid $version"
# This can be set in 6.8.0+ under Settings -> Global Share Settings -> Tunable (support Hard Links)
echo "Hard Link support: ${fuse_useino:-not set}"
echo

rm -rf "$DISK_PATH"
mkdir -p "$DISK_PATH"

echo "NumFiles,DiskTime,SHFSTime" > "$LOG_FILE"

STEP_SIZE=100000
MAX_FILES=300000
for (( i = STEP_SIZE; i <= MAX_FILES; i += STEP_SIZE )); do
    range_start=$(($i - $STEP_SIZE))
    range_end=$(($i - 1))
    echo "$i files"

    echo "Writing files"
    for (( j = range_start; j <= range_end; j++)); do
        touch "$DISK_PATH/$j"
    done
    sync -f "$DISK_PATH"

    echo -n "Benchmarking disk: "
    # make sure any caches are warm
    $LS_COMMAND "$DISK_PATH" > /dev/null
    disk_time=$(time_command $LS_COMMAND "$DISK_PATH")
    echo "$disk_time"

    echo -n "Benchmarking SHFS: "
    # make sure any caches are warm
    $LS_COMMAND "$SHFS_PATH" > /dev/null
    shfs_time=$(time_command $LS_COMMAND "$SHFS_PATH")
    echo "$shfs_time"

    echo "$i,$disk_time,$shfs_time" >> "$LOG_FILE"
    echo
done