What impact does the CA IDMS GSISVCX have on performance?

Document ID : KB000124510
Last Modified Date : 22/02/2019
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Introduction:
When the CA IDMS Tools are installed, they include an extension module GSISVCX which updates the SVC. This module updates one of our control blocks, the ERE extension. 
Question:
If the SVC is updated to include the Tools extension module GSISVCX, does the activity of GSISVCX updating the ERE use much CPU? 
Answer:
The tools SVC exit GSISVCX simply moves info from one memory location to another. This activity of GSISVCX updating the ERE will have insignificant CPU overhead.
Additional Information:
This page in our documentation includes more details about how GSISVCX works: 
https://docops.ca.com/ca-idms/19/en/installing/install-and-maintain-z-vse/ca-idms-installation-steps/steps-10-24-caiijmp-jobs/step-11-execute-job-2-from-the-installation-jcl/idmsdb-ca-idms-tools-svc-exit-information