extent
A group of pages within a tablespace totaling 1 megabyte. With the default page size of 16KB, an extent contains 64 pages. In MariaDB 5.6, the page size can also be 4KB or 8KB, in which case an extent contains more pages, still adding up to 1MB.
InnoDB features such as segments, read-ahead requests and the doublewrite buffer use I/O operations that read, write, allocate, or free data one extent at a time.
See also doublewrite buffer.
See also neighbor page.
See also page.
See also page size.
See also read-ahead.
See also segment.
See also tablespace.