做者:jiaxin
出處:http://www.cnblogs.com/YangJiaXin/
php
# 背景
測試mysql5.7和mysql8.0 分別在讀寫、只讀、只寫模式下不一樣併發時的性能(tps,qps)css
# 前提
測試使用版本爲mysql5.7.22和mysql8.0.15mysql
sysbench測試前先重啓mysql服務,並清空os的cache(避免屢次測試時命中緩存)程序員
每次進行測試都是新生成測試數據後再進行mysql5.7和mysql8.0的測試sql
每次測試時保證mysql5.7和mysql8.0的配置參數一致緩存
# 環境
機器安全
cat /etc/redhat-release | xargs echo '版本 ' && dmidecode -s system-product-name | xargs echo '是否虛擬化 ' && cat /proc/cpuinfo |grep "processor"|wc -l | xargs echo 'cpu核數 ' 版本 CentOS Linux release 7.5.1804 (Core) 是否虛擬化 KVM cpu核數 4
myql5.7.22bash
5.7.22-log innodb_buffer_pool_size 128M innodb_log_buffer_size 64M innodb_log_file_size 48M binlog_format ROW log_bin ON transaction_isolation REPEATABLE-READ
mysql8.0.15併發
8.0.15 innodb_buffer_pool_size 128M innodb_log_buffer_size 64M innodb_log_file_size 48M binlog_format ROW log_bin ON transaction_isolation REPEATABLE-READ
sysbenchide
sysbench -V sysbench 1.1.0 (using bundled LuaJIT 2.1.0-beta3)
# 測試
在不一樣的持久化策略下(binlog, redo log持久化)mysql5.7和mysql8.0 在讀寫模式、只讀模式、只寫模式(oltp_read_write,oltp_read_only,oltp_write_only)下的性能表現
sysbench 測試時間爲60s,測試的表數量爲20
測試分別在雙1模式(安全性)和0 2模式(高性能)下進行
雙1模式下
SHOW GLOBAL VARIABLES WHERE Variable_name IN('sync_binlog','innodb_flush_log_at_trx_commit'); +--------------------------------+-------+ | Variable_name | Value | +--------------------------------+-------+ | innodb_flush_log_at_trx_commit | 1 | | sync_binlog | 1 | +--------------------------------+-------+
mysql5.7和mysql8.0 在讀寫模式下的表現
讀寫模式下,mysql5.7.22 和mysql8.0.15 tps 、qps 性能差很少,mysql8.0.15 在120 線程併發時,性能出現了降低抖動:
mysql5.7和mysql8.0 在只讀模式下的表現
只讀模式下,mysql5.7.22 的tps、qps比mysql8.0.15 好1/3 左右;併發線程數增長後,tps、qps並無隨着增長,反而出現了降低的趨勢:
mysql5.7和mysql8.0 在只寫模式下的表現
只寫模式下,隨着併發數的上升,mysql5.7.22 的性能比mysql8.0.15 好1/4左右
0 2 模式下
SHOW GLOBAL VARIABLES WHERE Variable_name IN('sync_binlog','innodb_flush_log_at_trx_commit'); +--------------------------------+-------+ | Variable_name | Value | +--------------------------------+-------+ | innodb_flush_log_at_trx_commit | 2 | | sync_binlog | 0 | +--------------------------------+-------+
mysql5.7和mysql8.0 在讀寫模式下的表現
讀寫模式下,併發數低時,mysql5.7.22性能好於mysql8.0.15; 併發數比較高時,mysql8.0.15 性能好於mysql5.7.22;在80 線程的併發以上時,性能開始降低
mysql5.7和mysql8.0 在只讀模式下的表現
只讀模式下,mysql5.7.22性能比mysql8.0.15 好1/3左右;隨着併發數的上升,性能也沒有上升,反而有降低的趨勢
mysql5.7和mysql8.0 在只寫模式下的表現
只寫模式下,mysql5.7.22的tps 抖動比較大;mysql5.7.22 的qps比mysql8.0.15好1/3左右
# 結論
總體來看,mysql5.7.22在讀寫模式、只讀模式、只寫模式下的表現是優於mysql8.0.15的
隨着並行數的增長,性能表現不會也跟着增長,還會出現降低
本次測試結果是在配置很低的狀況下進行的,不表明絕對
注意
sysbench 須要設置--db-ps-mode=disable 禁用預編譯語句,否則併發測試線程多時會報下面的錯誤
FATAL: mysql_stmt_prepare() failed FATAL: MySQL error: 1461 "Can't create more than max_prepared_stmt_count statements (current value: 16382)" FATAL: mysql_stmt_prepare() failed FATAL: MySQL error: 1461 "Can't create more than max_prepared_stmt_count statements (current value: 16382)" FATAL: thread_init' function failed: /usr/local/share/sysbench/oltp_common.lua:288: SQL API error FATAL: mysql_stmt_prepare() failed FATAL: MySQL error: 1461 "Can't create more than max_prepared_stmt_count statements (current value: 16382)" FATAL:thread_init' function failed: /usr/local/share/sysbench/oltp_common.lua:288: SQL API error FATAL: mysql_stmt_prepare() failed
使用腳本
cat sysbench_test_mysql5.7_8.0_tps_qps.sh #!/bin/bash #用於sysbench 測試在讀寫模式、只讀模式、只寫模式下 mysql5.7和mysql8.0 的tps,qps #nohup bash $0 >/tmp/sysbench_test 2>& 1 & # user=admin passwd=admin ports="8015 57222" host=127.0.0.1 sysbench_test_mode="oltp_read_write oltp_read_only oltp_write_only" sysbench_test_info_path=/tmp/sysbench-test function red_echo () { local what="$*" echo -e "$(date +%F-%T) \e[1;31m ${what} \e[0m" } function check_las_comm(){ if [ $1 -ne 0 ];then red_echo $2 exit 1 fi } function restart_mysqld(){ service mysqld${1} restart sleep 2 } function purge_binlog(){ port=$1 mysql -u$user -p$passwd -P$port -h$host<<EOF purge binary logs before now(); EOF } function clean_os_cache(){ echo 3 > /proc/sys/vm/drop_caches } function sysbench_with_diff_thread(){ thread_num=$1 port=$2 order=$3 test_mode=$4 sysbench /usr/local/share/sysbench/${test_mode}.lua --mysql_storage_engine=innodb --table-size=100000 --tables=20 --mysql-db=test_1 --mysql-user=$user --mysql-password=$passwd --mysql-port=$port --mysql-host=$host --threads=$thread_num --time=60 --report-interval=2 --db-ps-mode=disable --events=0 --db-driver=mysql $order } function main(){ for test_mode in $sysbench_test_mode;do for port in $ports;do for thread_num in {5,10,20,30,40,80,120,200};do restart_mysqld "$port" check_las_comm "$?" "restart mysqld${port} failed " clean_os_cache purge_binlog "$port" red_echo "sysbench $thread_num threads cleanup mysqld${port}" sysbench_with_diff_thread "$thread_num" "$port" "cleanup" "$test_mode">/dev/null red_echo "sysbench $thread_num threads prepare mysqld${port}" sysbench_with_diff_thread "$thread_num" "$port" "prepare" "$test_mode">/dev/null mkdir -p $sysbench_test_info_path red_echo "sysbench $thread_num threads run mysqld${port} $test_mode" sysbench_with_diff_thread "$thread_num" "$port" "run" "$test_mode" > $sysbench_test_info_path/${test_mode}_${thread_num}_$port # service mysqld{port} stop done done done } main
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