查看innodb_buffer_pool_size
大小,字节显示
SHOW VARIABLES LIKE 'innodb_buffer_pool_size';
要将 innodb_buffer_pool_size
的值从字节转换为 MB,可以使用以下 SQL 查询:
SELECT CONCAT(ROUND((@@innodb_buffer_pool_size / (1024*1024)), 2), 'MB') AS innodb_buffer_pool_size_MB;
查看buffer_pool_unused使用率
SELECT
CONCAT(ROUND((1 - SUM(IF(free_page_clock > 0, 1, 0)) / COUNT(*)) * 100, 2), '%') AS buffer_pool_used,
CONCAT(ROUND(SUM(free_page_clock) / 1000000, 2), 'MB') AS buffer_pool_unused
FROM
INFORMATION_SCHEMA.INNODB_BUFFER_PAGE_LRU;