Documentation Home
MySQL 5.6 Reference Manual
Related Documentation Download this Manual
PDF (US Ltr) - 30.6Mb
PDF (A4) - 30.7Mb
PDF (RPM) - 30.1Mb
EPUB - 7.7Mb
HTML Download (TGZ) - 7.5Mb
HTML Download (Zip) - 7.5Mb
HTML Download (RPM) - 6.4Mb
Eclipse Doc Plugin (TGZ) - 8.2Mb
Eclipse Doc Plugin (Zip) - 10.1Mb
Man Pages (TGZ) - 200.2Kb
Man Pages (Zip) - 311.7Kb
Info (Gzip) - 2.9Mb
Info (Zip) - 2.9Mb
Excerpts from this Manual

14.12.1.1 INNODB_CMP and INNODB_CMP_RESET

The INNODB_CMP and INNODB_CMP_RESET tables contain status information about operations related to compressed tables, which are described in Section 14.6, “InnoDB Table Compression”. The PAGE_SIZE column reports the compressed page size.

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

For the table definition, see Section 21.29.1, “The INFORMATION_SCHEMA INNODB_CMP and INNODB_CMP_RESET Tables”.


User Comments
Sign Up Login You must be logged in to post a comment.