MyISAM 查询结果太慢,我应该做些什么改变,
如果
内存 16GB 数据库 500GB
mysql> SHOW STATUS LIKE 'key%'
+------------------------+-------------+
| Variable_name | Value |
+------------------------+-------------+
| Key_blocks_not_flushed | 0 |
| Key_blocks_unused | 275029 |
| Key_blocks_used | 3316428 |
| Key_read_requests | 11459264178 |
| Key_reads | 3385967 |
| Key_write_requests | 91281692 |
| Key_writes | 27930218 |
+------------------------+-------------+