Data set I/O statistics section

Note: I/O response and service time components are recorded in multiples of 128 micro-seconds.

Offsets		Name	Length	Format	Description
0	0	S42DSIOR	4	binary	Average response time.
4	4	S42DSIOC	4	binary	Average I/O connect time. There is one SMF subtype 6 record per data set, and each record has its own S42DSIOC field.
8	8	S42DSIOP	4	binary	Average I/O pending time.
12	C	S42DSIOD	4	binary	Average I/O disconnect time.
16	10	S42DSIOQ	4	binary	Average control unit queue time.
20	14	S42DSION	4	binary	Total number of I/Os. There is one SMF subtype 6 record per data set, and each record has its own S42DSION field.
24	18	S42DSCND	4	binary	Number of cache candidates.
28	1C	S42DSSHTS	4	binary	Number of cache hits.
32	20	S42DSWCN	4	binary	Number of write candidates.
36	24	S42DSWHI	4	binary	Number of write hits.
40	28	S42DSSEQ	4	binary	Number of sequential I/O operations. Operations counted here are not accumulated in S42DSCND and S42DSWCN.
44	2C	S42DSRLC	4	binary	Number of record level cache I/O operations.
48	30	S42DSICL	4	binary	Number of inhibit cache load I/O operations.
52	34	S42DSDA0	4	binary	Average I/O device-active-only time.
56	38	S42DSMXR	4	binary	Maximum data set I/O response time.
60	3C	S42DSMXS	4	binary	Maximum data set service time.
64	40	S42DSRDD	4	binary	Average disconnect time for reads.
68	44	S42DSRDT	4	binary	Total number of read operations.
72	48	S42DSHRD	4	binary	Number of zHPF read operations.
76	4C	S42DSHWR	4	binary	Number of zHPF write operations.
80	50	S42DSR1U	4	binary	Average response time (one microsecond).
84	54	S42DSC1U	4	binary	Average I/O connect time (one microsecond). There is one SMF subtype 6 record per data set, and each record has its own S42DSIOC field.
88	58	S42DSP1U	4	binary	Average I/O pending time (one microsecond).
92	5C	S42DSD1U	4	binary	Average I/O disconnect time (one microsecond).
96	60	S42DSQ1U	4	binary	Average control unit queue time (one microsecond).
100	64	S42DSA1U	4	binary	Average I/O device-active-only time (one microsecond).
104	68	S42DST1U	4	binary	Average disconnect time for reads (one microsecond).
108	6C	S42DSB1U	4	binary	Average device busy time (one microsecond).
112	70	S42DSM1U	4	binary	Average initial command response time (one microsecond).
116	74	S42DSIOS	4	binary	Total number of read/write operations to Metro Mirror secondary. Note: I/O operations to the Metro Mirror secondary volume are included in the Data Set I/O reporting fields.