pages_hashed
はsys.innodb_buffer_stats_by_table
に何人か説明できますか?sys.innodb_buffer_stats_by_tableのpages_hashedは何ですか?
mysql> select * from sys.innodb_buffer_stats_by_table;
+---------------+---------------------------+------------+-----------+-------+--------------+-----------+-------------+
| object_schema | object_name | allocated | data | pages | pages_hashed | pages_old | rows_cached |
+---------------+---------------------------+------------+-----------+-------+--------------+-----------+-------------+
| sbtest | sbtest1 | 107.25 MiB | 98.86 MiB | 6864 | 0 | 2597 | 721229 |
| InnoDB System | SYS_TABLES | 3.36 MiB | 3.03 MiB | 215 | 0 | 0 | 18889 |
| mysql | help_keyword | 112.00 KiB | 73.24 KiB | 7 | 0 | 0 | 472 |
| mysql | help_topic | 96.00 KiB | 53.27 KiB | 6 | 0 | 0 | 206 |
| mysql | help_category | 32.00 KiB | 6.29 KiB | 2 | 0 | 0 | 40 |
| mysql | engine_cost | 16.00 KiB | 112 bytes | 1 | 0 | 0 | 2 |
| mysql | gtid_executed | 16.00 KiB | 0 bytes | 1 | 0 | 0 | 0 |
どのバージョンのMySQL? –