VM370 Rel 6 Data Areas and Control Block Logic (Mar79)
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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
!ORCO! !ONCO! provides the control link for CP's monitoring activity, the user, and the tape drive. o 8 10 18 20 28 30 70 BO B8 CO C8 DO D8 EO E8 FO F8 100 i !ONARDB i 0*1 i 0*2 nONDVNUn i -----------------------------------------------------1 MONDVLST 1/////////!OBRSV1///////////1 ---------------------------------------------------1 MOIIIOB !ONITRB 1 -----------------------------------------------------1 MONCLOCK 1 -----------------------------------------------------1 MONSUSCK 1 -----------------------------------------------------1 MONSUSCT 1/////////!OBRSVD1//////////1 MONSAVE1 !ONSAVE2 MONUSER ftORSPLCT !OBS-FB !OBCURV MOBBXTV !OBCURR l'IONIUTR MOBDASA MONDASB MONDAS M*3 M*4 MOBBUFBO MOBCURBF MOBCRSLT MOBIOBF MORIOSLT MOBSKLST MOBSACT MOBCBPTR MOBUTRB l'IORBUF1 MORBUF1V (Variable nu.her of buffers) (Last address field) 56 IBM VM/370 Data Areas and Control Block Logic