The Information Schema INNODB_BUFFER_POOL_PAGES_BLOB table is a Percona enchancement, and is only available for XtraDB, not InnoDB (see XtraDB and InnoDB). It contains information about buffer pool blob pages.

It has the following columns:

Column Description
SPACE_ID Tablespace ID.
PAGE_NO Page offset within tablespace.
COMPRESSED 1 if the blob contains compressed data, 0 if not.
PART_LEN Page data length.
NEXT_PAGE_NO Next page number.
LRU_POSITION Page position in the LRU (least-recently-used) list.
FIX_COUNT Page reference count, incremented each time the page is accessed. 0 if the page is not currently being accessed.
FLUSH_TYPE Flush type of the most recent flush.0 (LRU), 2 (flush_list)
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