fio-based hdd/sdd performance benchmark script

run_fio_tests.sh

#!/bin/bash

set -euo pipefail

LOGFILE="fio_test_results_$(date +%Y%m%d_%H%M%S).log"
touch "$LOGFILE"

# Set up cleanup rules
declare -A cleanup_map=(
  ["testfile-seq-160g"]=0  # don't clean up immediately; used by two tests
  ["testfile-rand-4g"]=1
  ["database-testfile"]=1
  ["testfile-seq-readwrite"]=1
)

run_test() {
  local desc="$1"
  local filename="$2"
  local cmd="$3"

  echo -e "\n========== $desc ==========\n" | tee -a "$LOGFILE"
  date "+Start: %Y-%m-%d %H:%M:%S" | tee -a "$LOGFILE"
  sync
  eval "$cmd" | tee -a "$LOGFILE"
  date "+End: %Y-%m-%d %H:%M:%S" | tee -a "$LOGFILE"

  if [[ "${cleanup_map[$filename]:-0}" -eq 1 && -f "$filename" ]]; then
    echo "Cleaning up test file: $filename" | tee -a "$LOGFILE"
    rm -f "$filename"
    sync
  fi
}

# SEQ Write
run_test "SEQ Write with 4 vCPU" "testfile-seq-160g" \
"fio --filename=testfile-seq-160g --size=160G --direct=1 --rw=write --bs=1M \
 --ioengine=libaio --numjobs=4 --iodepth=32 --name=seq-write-test \
 --group_reporting --ramp_time=4"

# SEQ Read
run_test "SEQ Read with 4 vCPU" "testfile-seq-160g" \
"fio --filename=testfile-seq-160g --size=160G --direct=1 --rw=read --bs=1M \
 --ioengine=libaio --numjobs=4 --iodepth=32 --name=seq-read-test \
 --group_reporting --readonly --ramp_time=4"

# Clean up after both SEQ tests
if [[ -f "testfile-seq-160g" ]]; then
  echo "Final cleanup of testfile-seq-160g" | tee -a "$LOGFILE"
  rm -f "testfile-seq-160g"
  sync
fi

# Random Write
run_test "Random Write with 4 vCPU" "testfile-rand-4g" \
"fio --filename=testfile-rand-4g --size=4G --direct=1 --rw=randwrite --bs=4k \
 --ioengine=libaio --numjobs=4 --iodepth=32 --name=rand-write-test \
 --group_reporting --ramp_time=4 --time_based --runtime=300"

# Random Read
run_test "Random Read with 4 vCPU" "testfile-rand-4g" \
"fio --filename=testfile-rand-4g --size=4G --direct=1 --rw=randread --bs=4k \
 --ioengine=libaio --numjobs=4 --iodepth=32 --name=rand-read-test \
 --group_reporting --readonly --ramp_time=4"

# Mixed DB Workload
run_test "Mixed Random R/W DB workload with 8 vCPU" "database-testfile" \
"fio --filename=database-testfile --size=4G --direct=1 --rw=randrw --bs=8k \
 --ioengine=libaio --iodepth=32 --numjobs=8 --rwmixread=70 \
 --name=db-mixed-rw-test --group_reporting --ramp_time=4"

# Multithreaded App Simulation
run_test "Multi-Threaded Read/Write App Simulation with 16 vCPU" "testfile-seq-readwrite" \
"fio --filename=testfile-seq-readwrite --size=160G --direct=1 --rw=readwrite --bs=64k \
 --ioengine=libaio --iodepth=16 --numjobs=16 --name=multi-thread-app \
 --group_reporting --ramp_time=4"

echo -e "\n✅ All tests completed. Results saved to: $LOGFILE"