Documentation Home
MySQL 5.6 Reference Manual
Related Documentation Download this Manual
PDF (US Ltr) - 31.4Mb
PDF (A4) - 31.5Mb
PDF (RPM) - 29.8Mb
HTML Download (TGZ) - 7.5Mb
HTML Download (Zip) - 7.5Mb
HTML Download (RPM) - 6.5Mb
Man Pages (TGZ) - 177.2Kb
Man Pages (Zip) - 287.6Kb
Info (Gzip) - 3.0Mb
Info (Zip) - 3.0Mb
Excerpts from this Manual

14.15.1.1 INNODB_CMP and INNODB_CMP_RESET

The INNODB_CMP and INNODB_CMP_RESET tables provide status information about operations related to compressed tables, which are described in Section 14.9, “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 cumulative statistics since InnoDB was started.

For the table definition, see Section 21.30.4, “The INFORMATION_SCHEMA INNODB_CMP and INNODB_CMP_RESET Tables”.


User Comments
User comments in this section are, as the name implies, provided by MySQL users. The MySQL documentation team is not responsible for, nor do they endorse, any of the information provided here.
Sign Up Login You must be logged in to post a comment.