[root@localhost ~]# lscpu
CPU(s): 96
Model name: Inter(R) Xeon(R) Platinum 8255C CPU @ 2.5GHz
[root@localhost ~]# mysql -hlocalhost -uroot -p
mysql> select version();
+-------------+
| version() |
+-------------+
|MySQL 8.0.23 |
+-------------+
[root@localhost ~]# sysbench /usr/share/sysbench/oltp_point_select.lua --mysql-user=mysql --mysql-password=1111aaA_ --mysql-socker=/tmp/mysql.sock --time=180000 --mysql-db=mysqlslap --tables=8 --tables_size=10000000 --report-interval=1 --threads=64 run
QPS:21W
通过perf命令查看当前调用最多函数有哪些：
[root@localhost ~]# perf top -G -p `pidof mysqld`
通过查看当前引发自选锁等待调用最多的函数是trans_begin和plugin_lock。
[root@localhost ~]# mysql -hlocalhost -uroot -p
mysql> show variables like 'replication_optimize_for_static_plugin_config';
[root@localhost ~]# sysbench /usr/share/sysbench/oltp_point_select.lua --mysql-user=mysql --mysql-password=1111aaA_ --mysql-socker=/tmp/mysql.sock --time=180000 --mysql-db=mysqlslap --tables=8 --tables_size=10000000 --report-interval=1 --threads=64 run
QPS:21W
[root@localhost ~]# mysql -hlocalhost -uroot -p
mysql> set global replication_optimize_for_static_plugin_config=on;
[root@localhost ~]# sysbench /usr/share/sysbench/oltp_point_select.lua --mysql-user=mysql --mysql-password=1111aaA_ --mysql-socker=/tmp/mysql.sock --time=180000 --mysql-db=mysqlslap --tables=8 --tables_size=10000000 --report-interval=1 --threads=64 run
QPS：140W
[root@localhost ~]# top
通过调用Memcache插件使MySQL 8.0性能达到220万QPS
[root@localhost ~]# mysql -hlocalhost -uroot -p
mysql> install plugin daemon_memcached soname 'libmemcached.so';
mysql> use innodb_memcached;
mysql> select * from containers\G;
mysql> use mysqlslap
mysql> select * from sbtest1 where id = 1;
[root@localhost ~]# netstat -tnaulp
[root@localhost ~]# telnet 127.0.0.1 11211
get 1
[root@localhost ~]# LD_PRELOAD=/usr/lib64/libjemalloc.so.1 ./my_test 64 1 my_test 1.0
QPS：220W
[root@localhost ~]# perf top -G -p `pidof mysqld`
MySQL 5.7.33 QPS:120W
此文件属于性能调优视频笔记，原视频来源于姜承尧老师的抖音公从号。