Question & Answer
Question
Why is the CPU usage so high in my CICS Transaction Server for z/OS (CICS TS) region? My STROBE reports shows module CEEVGTSI is using 74 to 75% of the CPU. CEEVGTSI is the Language Environment (LE) Stack Increment module.
Answer
The LE STORAGE runtime option was (00,NONE,00,0K). The 3rd STORAGE option for dsa_alloc_value of 00 requests the stack storage be cleared. Setting dsa_alloc_value to 00 is only recommended in a debug environment.
After updating the STORAGE option to (00,NONE,NONE,0k), STROBE reports now show CEEVGTSI using less than 1% CPU. Testing with (00,NONE,CLEAR,0K) shows only 2% CPU usage in CEEVGTSI.
Product Synonym
CICS/TS CICSTS CICS TS CICS Transaction Server
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Document Information
Modified date:
11 March 2016
UID
dwa1256539