MN802 I • Header Reccrd MN802HDR provides the number of device block counters.
r--------------------------------------------------------"
o MN802NUM MN802CNT I Hexadecimal Field
Displacement Name Field Description, Contents, !eaning o MN802NUM DS 1H Number of dev1ce block counters
that follow
2 MN802CNT DS IL4 Device I/O count MN802DLN RQU *-MN802CTR Length of the header I. System Profile Data MN802CTR provides, via CP MONITOR command, additional system profile data. The monitor
data includes: the I/O activity for each device, the number of logged en users, number cf page read/writes, and the total system I/O, page wait, and proble. state times. ,
o MN802NIU MN8C2PGR 8 MN802PGW MN8C2NPP 10 MN802WID 18 MN802WPG 20 MN802WIO 28 MN802PRE Hexadecimal Field
Displacement Name Field Description, Contents, Meaning ------------ -------------------------------------- 0 MN802NAU DS 1F No. of logged on users
4 MN802PGR DS 1F Total system page reads
8 MN802PGW DS 1F Total system page writes
C MN802NPP DS 1F No. cf system pageable pages 10 MN802WID DS 118 Total system idle wait time
18 MN802WPG DS XL8 Total system page wait time 20 MN802WIO DS 118 Total system I/O wait time
28 MN802PRB DS IL8 Total system problem time MN802CLN EQU *-MN802CTR Length of each data entry
54 IBM VM/370 Data Areas and Control Block Logic

MNDEVLST MNDEVLST prevides information on device activity. Pointed to by MCNDVLST, it (MNDEVLST) contains a list of RDEVBLOK addresses to be used ty class 6 (DASTAP) data collection, together with bins: for each device, in which the high frequency sampler (tMKENTTI) can
accumulate centrol unit and device busy counts during each monitor interval. Note that
channel busy counts are accumulated in a separate area pointed to by MONCBPTR, 5
deublewords and 2 bytes per entry. Hexadecimal Lisplacement o
4
6
o MNRDEVB Field Naiie MNRDEBV DS MNCUBSY DS MNDVBSY DS MNDEVLEN BQU 1F
1B
1B *-MNDEVLST MNCUESY MNDVBSY Field Description, contents. !eaning
Address of RDEVBLOK Control unit busy count
Device busy count
Device entry size in doutlewcrds (1'01') Section 1. CP Data Areas and Centrol Blocks 55