争议 | MySQL 5.7 vs 8.0,哪个性能更牛一些?

2021-04-26  本文已影响0人  数据与人

背景

测试mysql5.7和mysql8.0 分别在读写、只读、只写模式下不同并发时的性能(tps,qps)

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前提

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环境

机器

<pre data-tool="mdnice编辑器" style="margin: 10px 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; color: rgb(51, 51, 51); font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: 0.544px; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); overflow-wrap: break-word !important;">

cat /etc/redhat-release | xargs echo '版本 ' && dmidecode -s system-product-name | xargs echo '是否虚拟化 ' && cat /proc/cpuinfo |grep "processor"|wc -l | xargs echo 'cpu核数 '
版本 CentOS Linux release 7.5.1804 (Core)
是否虚拟化 KVM
cpu核数 4

</pre>

myql5.7.22

<pre data-tool="mdnice编辑器" style="margin: 10px 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; color: rgb(51, 51, 51); font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: 0.544px; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); overflow-wrap: break-word !important;">

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

</pre>

mysql8.0.15

<pre data-tool="mdnice编辑器" style="margin: 10px 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; color: rgb(51, 51, 51); font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: 0.544px; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); overflow-wrap: break-word !important;">

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

</pre>

sysbench

<pre data-tool="mdnice编辑器" style="margin: 10px 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; color: rgb(51, 51, 51); font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: 0.544px; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); overflow-wrap: break-word !important;">

sysbench -V
sysbench 1.1.0 (using bundled LuaJIT 2.1.0-beta3)

</pre>

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测试

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**双1模式下 **

<pre data-tool="mdnice编辑器" style="margin: 10px 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; color: rgb(51, 51, 51); font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: 0.544px; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); overflow-wrap: break-word !important;">

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 |
+--------------------------------+-------+

</pre>

mysql5.7和mysql8.0 在读写模式下的表现

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mysql5.7和mysql8.0 在只读模式下的表现

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mysql5.7和mysql8.0 在只写模式下的表现

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**0 2 模式下 **

<pre data-tool="mdnice编辑器" style="margin: 10px 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; color: rgb(51, 51, 51); font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: 0.544px; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); overflow-wrap: break-word !important;">

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 |
+--------------------------------+-------+

</pre>

mysql5.7和mysql8.0 在读写模式下的表现

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mysql5.7和mysql8.0 在只读模式下的表现

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mysql5.7和mysql8.0 在只写模式下的表现

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结论

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注意

sysbench 需要设置--db-ps-mode=disable 禁用预编译语句,不然并发测试线程多时会报下面的错误

<pre data-tool="mdnice编辑器" style="margin: 10px 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; color: rgb(51, 51, 51); font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: 0.544px; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); overflow-wrap: break-word !important;">

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

</pre>

使用脚本

<pre data-tool="mdnice编辑器" style="margin: 10px 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; color: rgb(51, 51, 51); font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: 0.544px; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); overflow-wrap: break-word !important;">

cat sysbench_test_mysql5.7_8.0_tps_qps.sh

!/bin/bash

用于sysbench 测试在读写模式、只读模式、只写模式下 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_echo2
exit 1
fi
}

function restart_mysqld(){
service mysqld${1} restart
sleep 2
}

function purge_binlog(){
port=1 mysql -uuser -ppasswd -Pport -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

</pre>

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