mysql> show status like 'key%';
+------------------------+----------+
| Variable_name          | Value    |
+------------------------+----------+
| Key_blocks_not_flushed | 0        |
| Key_blocks_unused      | 26623    |
| Key_blocks_used        | 3152     |
| Key_read_requests      | 20665226 |
| Key_reads              | 7587     |
| Key_write_requests     | 458092   |
| Key_writes             | 5640     |
+------------------------+----------+
7 rows in set (0.00 sec)