Store undo tablespace in separate set of files
innodb_undo_directoryinnodb_undo_tablespacesinnodb_undo_logs
Page checksum is checked when page is read to buffer pool, and updated when page is flushed to disk. It can be significant overhead when using very fast storage. It can be disabled by:
innodb_checksums=0
Or we can use faster checksums for fast storage:
innodb_checksum_algorithm=crc32
The remains are still being arranged..