Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
SCMBK
Control Block Contents
SCMBK DSECT
Cross Reference (Contains links to field and bit definitions)
SCMBK Prolog
NAME : HCPSCMBK DESCRIPTION: SUBCHANNEL MEASUREMENT BLOCK DSECT : SCMBK FUNCTION : THE MEASUREMENT BLOCK IS AN ARCHITECTUALLY DEFINED 32 BYTE AREA THAT CONTAINS THE ACCUMULATED VALUES OF THE MEASURED PARAMETERS FOR EACH SUBCHANNEL. LOCATED BY : HCPRIOSM IS THE ANCHOR FIELD FOR THE SUBCHANNEL MEASUREMENT BLOCKS (MEASUREMENT BLOCK ORIGIN ADDRESS) HCPRIOSM ---> |-----| | | MEASUREMENT BLOCK 0000 |-----| | | MEASUREMENT BLOCK 0001 |-----| | | MEASUREMENT BLOCK 0002 |-----| . RDEVMBLK FIELD OF RDEVBK - MEASUREMENT BLK ADDRESS CREATED BY : SCMBK'S ARE STATIC AND CREATED BY THE SYSGEN PROCESS. DELETED BY : SCMBK'S ARE PART OF THE SYSTEM NUCLEUS AND NEVER DELETED. RELOCATION CONSIDERATIONS : None
SCMBK Control Block Content
SCMBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure SCMBK SUBCHANNEL MEASUREMENT BLOCK 0000 0 Signed 2 SCMSSCH CYCLIC COUNT OF SSCH AND RSCH 0002 2 Signed 2 SCMCOUNT SAMPLE COUNT 0004 4 Signed 4 SCMCNTIM DEVICE-CONNECT TIME 0008 8 Signed 4 SCMFPTIM FUNCTION-PENDING TIME 000C 12 Signed 4 SCMDDTIM DEVICE-DISCONNECT TIME 0010 16 Signed 4 SCMCQTIM CONTROL UNIT QUEUEING TIME 0014 20 Signed 4 SCMDATIM Device-Active-Only-Time 0018 24 Signed 4 SCMDBTIM Device-Busy Time 001C 28 Signed 4 SCMIRTIM Initial-Command-Response Time 00000020 SCMSIZEB (*-SCMBK) LENGTH OF SCMBK IN BYTES 00000004 SCMSIZE (*-SCMBK+7)/8 LENGTH OF SCMBK IN DOUBLE-WORDS
SCMBK Storage Layout
*** SCMBK - SUBCHANNEL MEASUREMENT BLOCK * * +-------------+-------------+---------------------------+ * 0 | SCMSSCH | SCMCOUNT | SCMCNTIM | * +-------------+-------------+---------------------------+ * 8 | SCMFPTIM | SCMDDTIM | * +---------------------------+---------------------------+ * 10 | SCMCQTIM | SCMDATIM | * +---------------------------+---------------------------+ * 18 | SCMDBTIM | SCMIRTIM | * +---------------------------+---------------------------+ * 20 * *** SCMBK - SUBCHANNEL MEASUREMENT BLOCK
SCMBK Cross Reference
Symbol Dspl Value -------------- ---- ----- SCMCNTIM 0004 SCMCOUNT 0002 SCMCQTIM 0010 SCMDATIM 0014 SCMDBTIM 0018 SCMDDTIM 000C SCMFPTIM 0008 SCMIRTIM 001C SCMSIZE 001C 00000004 SCMSIZEB 001C 00000020 SCMSSCH 0000
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