MySQL 5.7 vs 8.0，性能PK

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复制代码

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复制代码

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复制代码

sysbench -V
sysbench 1.1.0 (using bundled LuaJIT 2.1.0-beta3)复制代码

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   |
+--------------------------------+-------+复制代码

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复制代码

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_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复制代码