#### 15.15.1.1 INNODB\_CMP and INNODB\_CMP\_RESET

[]()[]()

 The [`INNODB_CMP`](information-schema-innodb-cmp-table.html) and [`INNODB_CMP_RESET`](information-schema-innodb-cmp-table.html) tables provide status information about operations related to compressed tables, which are described in [Section 15.9, “InnoDB Table and Page Compression”](innodb-compression.html). The `PAGE_SIZE` column reports the compressed [page size](glossary.html#glos_page_size).

 These two tables have identical contents, but reading from [`INNODB_CMP_RESET`](information-schema-innodb-cmp-table.html) resets the statistics on compression and uncompression operations. For example, if you archive the output of [`INNODB_CMP_RESET`](information-schema-innodb-cmp-table.html) every 60 minutes, you see the statistics for each hourly period. If you monitor the output of [`INNODB_CMP`](information-schema-innodb-cmp-table.html) (making sure never to read [`INNODB_CMP_RESET`](information-schema-innodb-cmp-table.html)), you see the cumulative statistics since InnoDB was started.

 For the table definition, see [Section 26.4.6, “The INFORMATION\_SCHEMA INNODB\_CMP and INNODB\_CMP\_RESET Tables”](information-schema-innodb-cmp-table.html).

