diff --git a/tools/benchmark.sh b/tools/benchmark.sh
new file mode 100755
index 000000000..cde545801
--- /dev/null
+++ b/tools/benchmark.sh
@@ -0,0 +1,205 @@
+#!/bin/bash
+# REQUIRE: db_bench binary exists in the current directory
+
+if [ $# -ne 1 ]; then
+  echo "./benchmark.sh [bulkload/fillseq/overwrite/filluniquerandom/readrandom/readwhilewriting]"
+  exit 0
+fi
+
+# size constants
+K=1024
+M=$((1024 * K))
+G=$((1024 * M))
+
+if [ -z $DB_DIR ]; then
+  echo "DB_DIR is not defined"
+  exit 0
+fi
+
+if [ -z $WAL_DIR ]; then
+  echo "WAL_DIR is not defined"
+  exit 0
+fi
+
+output_dir=${OUTPUT_DIR:-/tmp/}
+if [ ! -d $output_dir ]; then
+  mkdir -p $output_dir
+fi
+
+num_read_threads=${NUM_READ_THREADS:-16}
+writes_per_second=${WRITES_PER_SEC:-$((80 * K))}  # (only for readwhilewriting)
+cache_size=$((16 * G))
+duration=${DURATION:-0}
+
+num_keys=${NUM_KEYS:-$((1 * G))}
+key_size=20
+value_size=800
+
+const_params="
+  --db=$DB_DIR \
+  --wal_dir=$WAL_DIR \
+  \
+  --num_levels=6 \
+  --key_size=$key_size \
+  --value_size=$value_size \
+  --block_size=4096 \
+  --cache_size=$cache_size \
+  --cache_numshardbits=6 \
+  --compression_type=snappy \
+  --compression_ratio=0.5 \
+  \
+  --hard_rate_limit=2 \
+  --rate_limit_delay_max_milliseconds=1000000 \
+  --write_buffer_size=$((128 * M)) \
+  --max_write_buffer_number=2 \
+  --target_file_size_base=$((128 * M)) \
+  --max_bytes_for_level_base=$((1 * G)) \
+  \
+  --sync=0 \
+  --disable_data_sync=1 \
+  --verify_checksum=1 \
+  --delete_obsolete_files_period_micros=$((60 * M)) \
+  --max_grandparent_overlap_factor=10 \
+  \
+  --statistics=1 \
+  --stats_per_interval=1 \
+  --stats_interval=$((1 * M)) \
+  --histogram=1 \
+  \
+  --memtablerep=skip_list \
+  --bloom_bits=10 \
+  --open_files=$((20 * K))"
+
+l0_config="
+  --level0_file_num_compaction_trigger=8 \
+  --level0_slowdown_writes_trigger=16 \
+  --level0_stop_writes_trigger=24"
+
+if [ $duration -gt 0 ]; then
+  const_params="$const_params --duration=$duration"
+fi
+
+params_r="$const_params $l0_config --max_background_compactions=4 --max_background_flushes=1"
+params_w="$const_params $l0_config --max_background_compactions=16 --max_background_flushes=16"
+params_bulkload="$const_params --max_background_compactions=16 --max_background_flushes=16 \
+                 --level0_file_num_compaction_trigger=$((100 * M)) \
+                 --level0_slowdown_writes_trigger=$((100 * M)) \
+                 --level0_stop_writes_trigger=$((100 * M))"
+
+function run_bulkload {
+  echo "Bulk loading $num_keys random keys into database..."
+  cmd="./db_bench $params_bulkload --benchmarks=fillrandom \
+       --use_existing_db=0 \
+       --num=$num_keys \
+       --disable_auto_compactions=1 \
+       --disable_data_sync=1 \
+       --threads=1 2>&1 | tee $output_dir/benchmark_bulkload_fillrandom.log"
+  echo $cmd | tee $output_dir/benchmark_bulkload_fillrandom.log
+  eval $cmd
+  echo "Compacting..."
+  cmd="./db_bench $params_w --benchmarks=compact \
+       --use_existing_db=1 \
+       --num=$num_keys \
+       --disable_auto_compactions=1 \
+       --disable_data_sync=1 \
+       --threads=1 2>&1 | tee $output_dir/benchmark_bulkload_compact.log"
+  echo $cmd | tee $output_dir/benchmark_bulkload_compact.log
+  eval $cmd
+}
+
+function run_fillseq {
+  echo "Loading $num_keys keys sequentially into database..."
+  cmd="./db_bench $params_w --benchmarks=fillseq \
+       --use_existing_db=0 \
+       --num=$num_keys \
+       --threads=1 2>&1 | tee $output_dir/benchmark_fillseq.log"
+  echo $cmd | tee $output_dir/benchmark_fillseq.log
+  eval $cmd
+}
+
+function run_overwrite {
+  echo "Loading $num_keys keys sequentially into database..."
+  cmd="./db_bench $params_w --benchmarks=overwrite \
+       --use_existing_db=1 \
+       --num=$num_keys \
+       --threads=1 2>&1 | tee $output_dir/benchmark_overwrite.log"
+  echo $cmd | tee $output_dir/benchmark_overwrite.log
+  eval $cmd
+}
+
+function run_filluniquerandom {
+  echo "Loading $num_keys unique keys randomly into database..."
+  cmd="./db_bench $params_w --benchmarks=filluniquerandom \
+       --use_existing_db=0 \
+       --num=$num_keys \
+       --threads=1 2>&1 | tee $output_dir/benchmark_filluniquerandom.log"
+  echo $cmd | tee $output_dir/benchmark_filluniquerandom.log
+  eval $cmd
+}
+
+function run_readrandom {
+  echo "Reading $num_keys random keys from database..."
+  cmd="./db_bench $params_r --benchmarks=readrandom \
+       --use_existing_db=1 \
+       --num=$num_keys \
+       --threads=$num_read_threads \
+       --disable_auto_compactions=1 \
+       2>&1 | tee $output_dir/benchmark_readrandom.log"
+  echo $cmd | tee $output_dir/benchmark_readrandom.log
+  eval $cmd
+}
+
+function run_readwhilewriting {
+  echo "Reading $num_keys random keys from database whiling writing.."
+  cmd="./db_bench $params_r --benchmarks=readwhilewriting \
+       --use_existing_db=1 \
+       --num=$num_keys \
+       --threads=$num_read_threads \
+       --writes_per_second=$writes_per_second \
+       2>&1 | tee $output_dir/benchmark_readwhilewriting.log"
+  echo $cmd | tee $output_dir/benchmark_readwhilewriting.log
+  eval $cmd
+}
+
+function now() {
+  echo `date +"%s"`
+}
+
+report="$output_dir/report.txt"
+
+# print start time
+echo "===== Benchmark ====="
+
+# Run!!!
+IFS=',' read -a jobs <<< $1
+for job in ${jobs[@]}; do
+  echo "Start $job at `date`" | tee -a $report
+  start=$(now)
+  if [ $job = bulkload ]; then
+    run_bulkload
+  elif [ $job = fillseq ]; then
+    run_fillseq
+  elif [ $job = overwrite ]; then
+    run_overwrite
+  elif [ $job = filluniquerandom ]; then
+    run_filluniquerandom
+  elif [ $job = readrandom ]; then
+    run_readrandom
+  elif [ $job = readwhilewriting ]; then
+    run_readwhilewriting
+  else
+    echo "unknown job $job"
+    exit
+  fi
+  end=$(now)
+
+  echo "Complete $job in $((end-start)) seconds" | tee -a $report
+  if [[ $job = readrandom || $job = readwhilewriting ]]; then
+    qps=$(grep "micros\/op" "$output_dir/benchmark_$job.log" | grep "ops\/sec" | awk '{print $5}')
+    line=$(grep "rocksdb.db.get.micros" "$output_dir/benchmark_$job.log")
+    p50=$(echo $line | awk '{print $7}')
+    p99=$(echo $line | awk '{print $13}')
+    echo "Read latency p50 = $p50 us, p99 = $p99 us" | tee -a $report
+    echo "QPS = $qps ops/sec" | tee -a $report
+  fi
+done
diff --git a/tools/run_flash_bench.sh b/tools/run_flash_bench.sh
new file mode 100755
index 000000000..be7d1631f
--- /dev/null
+++ b/tools/run_flash_bench.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+# REQUIRE: benchmark.sh exists in the current directory
+# After execution of this script, log files are generated in $output_dir.
+# report.txt provides a high level statistics
+
+# Size constants
+K=1024
+M=$((1024 * K))
+G=$((1024 * M))
+
+n=$((1 * G))
+wps=$((80 * K))
+duration=$((6 * 60 * 60))
+num_read_threads=24
+
+# Update these parameters before execution !!!
+db_dir="/tmp/rocksdb/"
+wal_dir="/tmp/rocksdb/"
+output_dir="/tmp/output"
+
+# Test 1: bulk load
+OUTPUT_DIR=$output_dir NUM_KEYS=$n DB_DIR=$db_dir WAL_DIR=$wal_dir \
+  ./benchmark.sh bulkload
+
+# Test 2: sequential fill
+OUTPUT_DIR=$output_dir NUM_KEYS=$n DB_DIR=$db_dir WAL_DIR=$wal_dir \
+  ./benchmark.sh fillseq
+
+# Test 3: overwrite
+OUTPUT_DIR=$output_dir NUM_KEYS=$n DB_DIR=$db_dir WAL_DIR=$wal_dir \
+  ./benchmark.sh overwrite
+
+# Prepare: populate DB with random data
+OUTPUT_DIR=$output_dir NUM_KEYS=$n DB_DIR=$db_dir WAL_DIR=$wal_dir \
+  ./benchmark.sh filluniquerandom
+
+# Test 4: random read
+OUTPUT_DIR=$output_dir NUM_KEYS=$n DB_DIR=$db_dir WAL_DIR=$wal_dir \
+  DURATION=$duration NUM_READ_THREADS=$num_read_threads \
+  ./benchmark.sh readrandom
+
+# Test 5: random read while writing
+OUTPUT_DIR=$output_dir NUM_KEYS=$n DB_DIR=$db_dir WAL_DIR=$wal_dir \
+  DURATION=$duration NUM_READ_THREADS=$num_read_threads WRITES_PER_SECOND=$wps \
+  ./benchmark.sh readwhilewriting