Summary of changes for z/OS 2.5

Note: This publication contains information that previously appeared in z/OS Resource Measurement Facility (RMF) Data Gatherer Programmer's Guide, GC27-4935-40, for z/OS® 2.4.

The following content is new, changed, or no longer included in z/OS 2.5.

New

The following content is new.

August 2023 refresh

Monitor II REST services is added. (APAR OA63984)

September 2022 refresh

Accessing data using the z/OS Data Gatherer REST services is added. (APAR OA62081)

June 2022 refresh

New bit values are defined for the CPDCFLG field and new fields are added under "Channel path performance data," and a new "Channel measurements group 2 data - Extended data" section is added in ERBCPDG3 - Channel data table.

May 2022 refresh

New bit values and new fields are added to support CPU topology information in ERBCPCDB - CPC data control block. (APAR OA62064, which also supports z/OS V2R4 and V2R3)

March 2022 refresh

New fields are added in formerly reserved space at offsets 1172 - 1216 in ERBASIG3 - Address space identification table.
New fields are added in support of transaction data for enclaves under "Resource Collection Data - Period Entry" in ERBRCDG3 - Resource collection data. (APAR OA62502, which also applies to z/OS V2R4 and V2R3)

Prior to March refresh

The topic, Obtaining SMF record data from a data set or log stream (GRBSMFR), is added.
Adding Monitor I installation exits is added.
ASIFLAG is added at offset 24 in ERBASIG3 - Address space identification table.
CFIFLAG is added at offset 66 in ERBCATG3 - Cache data information table.
CPC_Flags bits 3 and 4 are now defined in ERBCPCDB - CPC data control block.
Bit 13 in the CFIENFLG field is now defined in ERBCFIG3 - Coupling facility information table.
The topic, ERBCPUDB - CPU data block, is added.
CPUG3_FLAG is added at offset 7 in ERBCPUG3 - Processor data control block.
The topic, ERBDDNG3 - Device data set name list table, is added.
GEIFLG3 is added at offset 25 in ERBGEIG3 - General information table.
The topic, ERBIQDG3 - I/O queuing performance data table, is added.
The topic, ERBLOKG3 - Lock performance data table, is added.
In ERBRCDG3 - Resource collection data:
- RCDMODE bits 2 and 3 are now defined.
- Fields are added at offsets 296 - 308 in the Resource Collection Data - Period Entry.
- New fields are added at offsets 132 - 168 in the Subsystem Work Manager Delays section.
SSHVRIO, SSHIQDO, and SSHLOKO are added at offsets 324, 344, and 352, respectively, in ERBSSHG3 - MINTIME set of samples header.
The topic, ERBVRIG3 - VSAM RLS information data table, is added.
ZFXFlag is added at offset 52 in ERBZFXG3 - zFS performance data table.

Changed

The following content is changed.

February 2023 refresh

Reserved fields are documented at the end of the "Home LPAR section" in ERBCPCDB - CPC data control block.
The name and description of the field at offset 60, as well as the name and description of the field at offset 6 under "CPU extension for each processor," are updated in ERBCPUDB - CPU data block.
The length of the reserved field at offset 164 (A4) and the descriptions of the CPUG3_PARK_IFA and CPUG3_PARK_SUP fields are updated in ERBCPUG3 - Processor data control block.
The descriptions of the RCDIFAT and RCDIFCT fields are updated in ERBRCDG3 - Resource collection data.

August 2022 refresh

Bit 10 in the CPUG3_STATUS field is now defined in ERBCPUG3 - Processor data control block. (APAR OA63190, which also applies to z/OS 2.4.)

June 2022 refresh

The description of the IQDLMCUs field is updated in ERBIQDG3 - I/O queuing performance data table.

May 2022 refresh

Bits 8 and 10 in the ASIMSTS field are updated in ERBASIG3 - Address space identification table. (APAR OA60660, which also applies to z/OS V2R4)
The lists of values are updated in the descriptions of the APType and MapType fields in ERBCRYG3 - Cryptographic hardware data table. (APAR OA59874, which also applies to z/OS V2R4 and V2R3)
Additional flag values are defined for the CPUFLAGS field in ERBCPUDB - CPU data block. (APAR OA62064, which also supports z/OS V2R4 and V2R3)

Prior to May 2022 refresh

The terms RMF Data Gatherer and RMF data gathering have been updated to z/OS Data Gatherer and z/OS data gathering throughout the text.
The list of measurement tables or records is updated in Data set content.
The meaning of return code 16, reason code 92 is updated in Return codes and reason codes.
Obsolete fields at decimal offsets 44, 48, 128, and 194 have been changed to "reserved" in ERBASIG3 - Address space identification table.
Obsolete fields at decimal offsets 96, 104, 112, 348, 352, 356, and 360 have been changed to "reserved" in ERBGEIG3 - General information table.

Deleted

The following content was deleted.

Return codes 116 and 120 are removed from the table in Return codes.
The chapter, "Adding Monitor III user exits," has been removed.