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DFHDSDS3 in CICS

I used Strobe to monitor the CICS region performance and I got the result to show as follows, CPU:I/O = 14:86. The environment is CICS TS v1.3 and DB2 v7.1 and OS/390 v2.

   ** ATTRIBUTION OF CPU WAIT
TIME **
-.SVC     SVC 001            WAIT
 ---------------------------WAS INVOKED BY---------------------
-----------------VIA----------------------- WAIT TIME %
 XACTION  MODULE   SECTION    RETURN   LINE   PROCEDURE NAME
MODULE   SECTION  FUNCTION                 PAGE  TOTAL

 .WAIT    .CICS    .USERTSK            USER TASK WAIT
DFHSIP   DFHDSDS3 DS DOM-MAIN DISPTCH LOOP   .00 84.26
Do you have any ideas what the causer is invoked DFHDSDS3? And, what is DFHDSDS3 used in CICS?


DFHDSDS3 is part of the CICS Dispatcher code -- that which decides which CICS Transaction is to run next and how various priorities are managed, all that sort of thing. It also manages the ECBs related to low CICS activity and things like Partition Exit processing.

Robert Harris
Inventor
CICS Technical Strategist -- CICS expert at Search390.com

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Is that a Problem? If the region does not have a work, Z/OS Dispatcher waste CPU for give it control to that region?
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