This is like -eis , but tells you what is being done. MYM Explanations for the types of information myisamchk produces are given below. Isam-version Version of ISAM format. Currently always 2. Creation time When the data file was created.
Data records How many records are in the table.
Deleted blocks How many deleted blocks still have reserved space. You can optimize your table to minimize this space. See section 16.4.3 Table Optimization . Parts For dynamic record format, this indicates how many data blocks there are. For an optimized table without fragmented records, this is the same as Data records .