两种方法：

网站建设哪家好，找创新互联！专注于网页设计、网站建设、微信开发、重庆小程序开发、集团企业网站建设等服务项目。为回馈新老客户创新互联还提供了黄州免费建站欢迎大家使用！

一、通过show status

MySQL> show status like 'innodb_buffer_pool_pages_data';
+-------------------------------+---------+
| Variable_name                 | Value   |
+-------------------------------+---------+
| Innodb_buffer_pool_pages_data | 3226366 |
+-------------------------------+---------+
1 row in set (0.00 sec)
mysql> show status like 'innodb_buffer_pool_pages_total';
+--------------------------------+---------+
| Variable_name                  | Value   |
+--------------------------------+---------+
| Innodb_buffer_pool_pages_total | 3244032 |
+--------------------------------+---------+
1 row in set (0.00 sec)

val=innodb_buffer_pool_pages_data/innodb_buffer_pool_pages_total x 100%=3226366/3244032 x 100%=99.46%

二、通过SQL查看

mysql> select * from performance_schema.global_status where variable_name in ('innodb_buffer_pool_pages_data','innodb_buffer_pool_pages_total');
+--------------------------------+----------------+
| VARIABLE_NAME                  | VARIABLE_VALUE |
+--------------------------------+----------------+
| Innodb_buffer_pool_pages_data  | 3226437        |
| Innodb_buffer_pool_pages_total | 3244032        |
+--------------------------------+----------------+
2 rows in set (0.00 sec)

val=innodb_buffer_pool_pages_data/innodb_buffer_pool_pages_total x 100%=3226437/3244032 x 100%= 99.46%

本文题目：计算innodb_buffer_pool使用率
网址分享：http://lswzjz.com/article/jsihhd.html