Open topic with navigation

ibi™ Open Data Hub for Mainframe Connectors 1.0.8

# Evaluating zIIP Usage

In order to evaluate server zIIP processing in a session, you can query three Dialogue Manager variables that accumulate statistics about CPU processing:

- &FOCCPU accumulates the time spent on a central processor. This is an existing variable that precedes zIIP enablement.
- &FOCZIIPCPU accumulates the time actually spent on the zIIP processor (in SRB mode). This is the normalized CPU value using the same scale as &FOCCPU.
- &FOCZIIPONCP accumulates the time that processing could have been offloaded to the zIIP processor but was diverted to the central processor by the system.
  Note:
  - &FOCCPU includes the value of &FOCZIIPONCP.
  - The sum of &FOCZIIPCPU and &FOCCPU represents the total CPU utilized by the server agent.
  - If you set ZIIP=OFF, the zIIP variables do not accumulate further but are not reset to zero. If you later set ZIIP=ON, they resume accumulating statistics.

The RM (Resource Manager) that monitors server usage also captures zIIP statistics.

Did you find this helpful?

Yes No
Great!
Thanks for taking the time to give us some feedback.
Sorry about that

Why wasn't this helpful? (check all that apply)

Could not find what I was looking for
Instructions confusing or unclear
Instructions did not work

Want to tell us more?

Please select at least one option or provide details about the issue!!

Error occurred while submitting feedback.

Error2 occurred while submitting feedback.

ibi™ Open Data Hub for Mainframe Connectors

Copyright © 2021-2025. Cloud Software Group, Inc. All Rights Reserved.