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Programming Interface Information:
The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM. |
MRSCLSTP
PrologControl Block Contents
Cross Reference
MRSCLSTP Prolog
DSECT NAME - SCLSTP
FUNCTION - Map a Monitor record.
LOCATED BY -
Through the Monitor Control Area
REFERENCED CONTROL BLOCKS -
MRRECHDR Monitor Record Header
NAME - MRSCLSTP
DESCRIPTIVE NAME - Monitor Event Record
Domain 2 - Scheduler Domain
Record 8 - System Timer Pop
DESCRIPTION - Record of changes to "smoothed" (i.e. averaged
over time) scheduler data. Generated at every
system-designated time interval. This data is
critical to scheduling algorithms.
NOTE : The time interval, designated by CP, is currently set at
30 seconds but may be subject to change in the future.
MRSCLSTP Control Block Contents
Offsets
Dec Hex Type Len Name (Dim) Description
0 0 Structure 80 SCLSTP Start of monitor record
0 0 Character 0 SCLSTP_MRHDR Record header. See MRRECHDR
for details.
0 0 Character 20 MRHDR
0 0 Unsigned 2 MRHDRLEN record length in bytes
2 2 Unsigned 2 MRHDRZER field of zeros
4 4 Unsigned 1 MRHDRDM domain identifier
5 5 Unsigned 1 *
6 6 Unsigned 2 MRHDRRC record identifier
8 8 Character 8 MRHDRTOD Time at which this record was
built. In time-of-day (TOD)
clock format. See IBM System
370 XA Principle of Operation
for explanation of format.
16 10 Character 4 *
20 14 Character 0 MRHDR_END End of header
20 14 Character 8 SCLSTP_SRMRSCTM Reset interval size
28 1C Unsigned 2 SCLSTP_SYSPGRAT Pages per second which are
being read in by the system
30 1E Unsigned 2 * Reserved for IBM use
32 20 Unsigned 4 SCLSTP_SRMSTEAL Instantaneous value of the
STEAL parameter reported on the
INDICATE LOAD command
36 24 Character 8 SCLSTP_SRMSTRD Average time to read a page.
Scheduler's estimate of how
long it is taking users to
receive a page once requested.
Measured in elapsed time.
44 2C Unsigned 4 SCLSTP_SRM1AVWS Average WSS of all E1 users
at the end of their Q1 dispatch
list stay. Used by the
scheduler to assign a projected
WSS to E1 users on entry to the
eligible list for a new
transaction.
48 30 Unsigned 4 SCLSTP_SRM1AVPG Average paging rate of all E1
users at the end of their Q1
dispatch list stay. Used by the
scheduler to assign a projected
paging rate to E1 users on
entry to the eligible list for
a new transaction
52 34 Unsigned 4 SCLSTP_SRMSTSRW System resource weight for
storage. This is used by the
scheduler to decide how much of
a bottleneck the storage
resources are.
56 38 Unsigned 4 SCLSTP_SRMAPGDE Average Paging rate of user
in s dispatch and eligible
lists
60 3C Unsigned 4 SCLSTP_SRMAWSDE Average WSS of users in
dispatch and eligible lists
64 40 Unsigned 4 SCLSTP_SRMPGSRW System resource weight for
paging. Used by the scheduler
to decide how much of a
bottleneck the paging resources
are.
68 44 Unsigned 4 SCLSTP_SRMEPNF1 Expansion factor for all E1
users. Represents the ratio of
time it is taking for a short
transaction to complete
compared with the amount of
time it would take if it were
running alone on the system.
72 48 Unsigned 4 SCLSTP_SRMEPNF2 Expansion time for all E2
users. Represents the ratio of
time it is taking for a medium
transaction to complete
compared with the amount of
time it would take if it were
running alone on the system.
76 4C Unsigned 4 SCLSTP_SRMEPNF3 Expansion time for all E2
users. Represents the ratio of
time it is taking for a long
transaction to complete
compared with the amount of
time it would take if it were
running alone on the system.
80 50 Character 0 SCLSTP_END
MRSCLSTP Cross Reference
Hex Hex
Name Offset Length Value
MRHDR 0 20
MRHDR_END 14 0
MRHDRDM 4 1
MRHDRLEN 0 2
MRHDRRC 6 2
MRHDRTOD 8 8
MRHDRZER 2 2
SCLSTP 0 80
SCLSTP_END 50 0
SCLSTP_MRHDR 0 0
SCLSTP_SRMAPGDE 38 4
SCLSTP_SRMAWSDE 3C 4
SCLSTP_SRMEPNF1 44 4
SCLSTP_SRMEPNF2 48 4
SCLSTP_SRMEPNF3 4C 4
SCLSTP_SRMPGSRW 40 4
SCLSTP_SRMRSCTM 14 8
SCLSTP_SRMSTEAL 20 4
SCLSTP_SRMSTRD 24 8
SCLSTP_SRMSTSRW 34 4
SCLSTP_SRM1AVPG 30 4
SCLSTP_SRM1AVWS 2C 4
SCLSTP_SYSPGRAT 1C 2
This information is
based on z/VM V5R1.0.
Last updated on 13 Sep 2004 at 11:25:22.
Copyright IBM Corporation, 1990, 2004