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Status Not under consideration
Categories Runtime
Created by Guest
Created on Oct 18, 2016

OTE, Threadsafe and Concurrency Statistics

As part of our threadsafe project, post execution, we review the changes to the programs' PPT definitions, after defining them as Concurrency: Threadsafe. We use: DFH0STAT, SMF 110 performance data and SYSVIEW.

We review a number of statistics. Amongst others:

• QR TCB/CPU Dispatch Ratio. (for TCB starvation)
• Transactions per second.
• CPU consumption by transaction.
• Elapse time by transaction.
• Redispatch wait time

We know an open TCB is assigned to a CICS task, for its sole use. And, that multiple OTE TCBs can run concurrently in CICS. And, that for the thread safe programs, each TCB is a thread where a CICS program can run in parallel. And, also that the tasks run concurrently.

But, crucially, there is no obvious way to subsequently determine, what might be termed: true task concurrency. That is, for multiple tasks on the L8 TCB - threading through the same program - in terms of the High Water Mark.

Can you consider an RFE here which might be a report, or a program statistic which shows: L8 TCB Concurrency HWM for Task=>Program. Whether this information can already be derived in an alternative way, using the existing statistical data, is also a valid question. This would then obviate the need for such an RFE.

Idea priority Low
  • Guest
    Reply
    |
    Jan 17, 2017

    We have assessed this requirement. We have no current plans for this to be implemented and so this requirement is being declined at this point. The requirement will be kept in the RFE system and might be reassessed in the future. You also have an opportunity to resubmit in twelve months time if you wish it to be reconsidered then.