BMF totals section

Offsets		Name	Length	Format	Description
0	0	SMF42TNA	4	binary	Total number of storage classes.
4	4	SMF42TMT	4	binary	Interval length. This is the elapsed time of the measurement period in seconds.
8	8	SMF42TRT	4	binary	Total number of member data page reads.
12	C	SMF42TRH	4	binary	Total number of member data page read hits handled by BMF.
16	10	SMF42TDT	4	binary	Total number of directory data page reads.
20	14	SMF42TDH	4	binary	Total number of directory data page read hits handled by BMF.
24	18	SMF42BUF	4	binary	Total number of active BMF 4K buffers.
28	1C	SMF42BMX	4	binary	High water mark of BMF buffers.
32	20	SMF42LRU	2	binary	BMF LRU interval time.
34	22	SMF42UIC	2	binary	BMF LRU cycles until inactive buffers are cast out.