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#!/usr/bin/env bash
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
# REQUIRE: benchmark_leveldb.sh exists in the current directory
# After execution of this script, log files are generated in $output_dir.
# report.txt provides a high level statistics
#
# This should be used with the LevelDB fork listed here to use additional test options.
# For more details on the changes see the blog post listed below.
# https://github.com/mdcallag/leveldb-1
# http://smalldatum.blogspot.com/2015/04/comparing-leveldb-and-rocksdb-take-2.html
#
# This should be run from the parent of the tools directory. The command line is:
# [$env_vars] tools/run_flash_bench.sh [list-of-threads]
#
# This runs a sequence of tests in the following sequence:
# step 1) load - bulkload, compact, fillseq, overwrite
# step 2) read-only for each number of threads
# step 3) read-write for each number of threads
#
# The list of threads is optional and when not set is equivalent to "24".
# Were list-of-threads specified as "1 2 4" then the tests in steps 2, 3 and
# 4 above would be repeated for 1, 2 and 4 threads. The tests in step 1 are
# only run for 1 thread.
# Test output is written to $OUTPUT_DIR, currently /tmp/output. The performance
# summary is in $OUTPUT_DIR/report.txt. There is one file in $OUTPUT_DIR per
# test and the tests are listed below.
#
# The environment variables are also optional. The variables are:
# NKEYS - number of key/value pairs to load
# NWRITESPERSEC - the writes/second rate limit for the *whilewriting* tests.
# If this is too large then the non-writer threads can get
# starved.
# VAL_SIZE - the length of the value in the key/value pairs loaded.
# You can estimate the size of the test database from this,
# NKEYS and the compression rate (--compression_ratio) set
# in tools/benchmark_leveldb.sh
# BLOCK_LENGTH - value for db_bench --block_size
# CACHE_BYTES - the size of the RocksDB block cache in bytes
# DATA_DIR - directory in which to create database files
# DO_SETUP - when set to 0 then a backup of the database is copied from
# $DATA_DIR.bak to $DATA_DIR and the load tests from step 1
# This allows tests from steps 2, 3 to be repeated faster.
# SAVE_SETUP - saves a copy of the database at the end of step 1 to
# $DATA_DIR.bak.
# Size constants
K=1024
M=$((1024 * K))
G=$((1024 * M))
num_keys=${NKEYS:-$((1 * G))}
wps=${NWRITESPERSEC:-$((10 * K))}
vs=${VAL_SIZE:-400}
cs=${CACHE_BYTES:-$(( 1 * G ))}
bs=${BLOCK_LENGTH:-4096}
# If no command line arguments then run for 24 threads.
if [[ $# -eq 0 ]]; then
nthreads=( 24 )
else
nthreads=( "$@" )
fi
for num_thr in "${nthreads[@]}" ; do
echo Will run for $num_thr threads
done
# Update these parameters before execution !!!
db_dir=${DATA_DIR:-"/tmp/rocksdb/"}
do_setup=${DO_SETUP:-1}
save_setup=${SAVE_SETUP:-0}
output_dir="${TMPDIR:-/tmp}/output"
ARGS="\
OUTPUT_DIR=$output_dir \
NUM_KEYS=$num_keys \
DB_DIR=$db_dir \
VALUE_SIZE=$vs \
BLOCK_SIZE=$bs \
CACHE_SIZE=$cs"
mkdir -p $output_dir
echo -e "ops/sec\tmb/sec\tusec/op\tavg\tp50\tTest" \
> $output_dir/report.txt
# Notes on test sequence:
# step 1) Setup database via sequential fill followed by overwrite to fragment it.
# Done without setting DURATION to make sure that overwrite does $num_keys writes
# step 2) read-only tests for all levels of concurrency requested
# step 3) non read-only tests for all levels of concurrency requested
###### Setup the database
if [[ $do_setup != 0 ]]; then
echo Doing setup
# Test 2a: sequential fill with large values to get peak ingest
# adjust NUM_KEYS given the use of larger values
env $ARGS BLOCK_SIZE=$((1 * M)) VALUE_SIZE=$((32 * K)) NUM_KEYS=$(( num_keys / 64 )) \
./tools/benchmark_leveldb.sh fillseq
# Test 2b: sequential fill with the configured value size
env $ARGS ./tools/benchmark_leveldb.sh fillseq
# Test 3: single-threaded overwrite
env $ARGS NUM_THREADS=1 DB_BENCH_NO_SYNC=1 ./tools/benchmark_leveldb.sh overwrite
else
echo Restoring from backup
rm -rf $db_dir
if [ ! -d ${db_dir}.bak ]; then
echo Database backup does not exist at ${db_dir}.bak
exit -1
fi
echo Restore database from ${db_dir}.bak
cp -p -r ${db_dir}.bak $db_dir
fi
if [[ $save_setup != 0 ]]; then
echo Save database to ${db_dir}.bak
cp -p -r $db_dir ${db_dir}.bak
fi
###### Read-only tests
for num_thr in "${nthreads[@]}" ; do
# Test 4: random read
env $ARGS NUM_THREADS=$num_thr ./tools/benchmark_leveldb.sh readrandom
done
###### Non read-only tests
for num_thr in "${nthreads[@]}" ; do
# Test 7: overwrite with sync=0
env $ARGS NUM_THREADS=$num_thr DB_BENCH_NO_SYNC=1 \
./tools/benchmark_leveldb.sh overwrite
# Test 8: overwrite with sync=1
# Not run for now because LevelDB db_bench doesn't have an option to limit the
# test run to X seconds and doing sync-per-commit for --num can take too long.
# env $ARGS NUM_THREADS=$num_thr ./tools/benchmark_leveldb.sh overwrite
# Test 11: random read while writing
env $ARGS NUM_THREADS=$num_thr WRITES_PER_SECOND=$wps \
./tools/benchmark_leveldb.sh readwhilewriting
done
echo bulkload > $output_dir/report2.txt
head -1 $output_dir/report.txt >> $output_dir/report2.txt
grep bulkload $output_dir/report.txt >> $output_dir/report2.txt
echo fillseq >> $output_dir/report2.txt
head -1 $output_dir/report.txt >> $output_dir/report2.txt
grep fillseq $output_dir/report.txt >> $output_dir/report2.txt
echo overwrite sync=0 >> $output_dir/report2.txt
head -1 $output_dir/report.txt >> $output_dir/report2.txt
grep overwrite $output_dir/report.txt | grep \.s0 >> $output_dir/report2.txt
echo overwrite sync=1 >> $output_dir/report2.txt
head -1 $output_dir/report.txt >> $output_dir/report2.txt
grep overwrite $output_dir/report.txt | grep \.s1 >> $output_dir/report2.txt
echo readrandom >> $output_dir/report2.txt
head -1 $output_dir/report.txt >> $output_dir/report2.txt
grep readrandom $output_dir/report.txt >> $output_dir/report2.txt
echo readwhile >> $output_dir/report2.txt >> $output_dir/report2.txt
head -1 $output_dir/report.txt >> $output_dir/report2.txt
grep readwhilewriting $output_dir/report.txt >> $output_dir/report2.txt
cat $output_dir/report2.txt
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