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IBM Z Hardware and Operating Systems Ideas Portal


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BCP_Supervisor

Showing 14

z/OS IPL simulation

It should be very valuable to test an upcoming IPL in case of z/OS upgrade or other system parameter change. The simulation could consist of various checks for example ipl & catalog volume address verification, IPLPARM LOADxy syntax check, var...
5 days ago in z/OS / BCP_Supervisor 0 Under review

VLF SMF 41 SUBTYPE 3 - MISSING COFPURGE statistics

Currently VLF statistics tracks ADD, DELETES, TRIM activity. One of the most important activity in terms of VLF CPU usage is the PURGE activity (COFPURGE). SMF 41 should track also COFPURGE. The purge activity consumes when the cache has many entr...
about 2 months ago in z/OS / BCP_Supervisor 2 Not under consideration

To be complete, the IPCS SUMMARY COMMAND dispatchablity information needs to go beyond TCBFLGS4 and also include WEB dispatchablity information plus more

From IPCS, the SUMMARY command is widely used to determine the state of a TCB in a given address space. That includes the TCBFLGS4 non-dispatiblity flags. For example, if a TCB was in an RB wait via the Wait service, IPCS would state that 'Top RB ...
9 months ago in z/OS / BCP_Supervisor 1 Future consideration

Add additional filtering keywords to IEASYMxx

If IEASYMxx supported a SYSDEF SYSRES(volser) parameter it would be possible to set other symbols based on the volser of the sysres. This would eliminate the need for the system programmer to change IEASYMxx each time the IPL volume changed. Reduc...
about 2 months ago in z/OS / BCP_Supervisor 0 Under review

Allow programmatic determination if a zIIP engine is online temporarily for System Recovery Boost

We have had several customer requests for determining if a zIIP engine is online due to a System Recovery Boost or not (to prevent accidental activation in an LPAR). Currently the only way of doing this is by issuing a D M=CPU operator command and...
7 months ago in z/OS / BCP_Supervisor 0 Planned for future release

Error message to be produced when LNKLST concatenation datasets experiencing severe performance degradation, especially Sys1.LINKLIB.

This will indicate that there is a problem with LNKLST concatenated datasets, and that LNKLST is is under performance degradation constraints, when datasets were removed and added back to the LNKLST concatenation.Current error messages for LNKLST ...
9 months ago in z/OS / BCP_Supervisor 1 Not under consideration

System Recovery Boost SMF record to know how much CPU used in ZIIP instead of GCP

During System Recovery Boost (SRB) some work, that is not eligible for zIIP, is dispatched on zIIP's in case there isn’t sufficient standard CP capacity available. There is existing SMF to count how much there is zIIP eligible time spent on CP's, ...
4 months ago in z/OS / BCP_Supervisor 2 Not under consideration

Enable use of OS Level Filtering in IEASYMxx member

We'd like the ability within a single IEASYMxx member to assign the value of a symbol based on the level of z/OS the system is IPLed under. SYSOSLVL(Z1020500) SYMDEF (&PRDVER='V1') SYSOSLVL(Z1030100) SYMDEF (&PRDVER='V2') This will aid in ...
4 months ago in z/OS / BCP_Supervisor 1 Future consideration

Request a message informing if LLA is not managing the current LNKLST set as an entity (or that that state has changed from managing to not managing) since it is managing as an entity that allows avoiding some I/O to the dataset.

This will indicate that LNKLST as a whole entity is not being managed by the Library LookAside (LLA)This is when datasets are removed and added back to the LNKLST concatenation.Current error messages for LNKLST did not indicate any problems with L...
5 months ago in z/OS / BCP_Supervisor 1 Not under consideration

RTM fencing storage for CANCEL command per TS014858949

Per TS014858949, we are requesting RTM fencing off a piece of storage to be able to issue the CANCEL command when memory is an issue. This sounds practical and safe to implement, and we could benefit from such an improvement.
10 months ago in z/OS / BCP_Supervisor 1 Not under consideration