difference between elapsed time and the cpu time

In this Mainframe Forum - You can post your queries on JCL, OS/390 JCL, MVS JCL, z/OS JCL, JES2 & JES3

Moderators: Frank Yaeger, DikDude, Moderator Group

Post Reply
Diya

difference between elapsed time and the cpu time

Post by Diya » Tue Jun 20, 2006 4:18 pm

Can anyone tell me what is difference between elapsed time and CPU time ......plz.......

chris_alex3k
Member
Posts: 3
Joined: Mon Jun 19, 2006 5:23 pm

Hi

Post by chris_alex3k » Tue Jun 20, 2006 5:32 pm

Elapsed Time = Waiting time of the Job + CPU Time

other wise

Elapsed Time = Waiting time of the Job + Execution Time


Correct me If i am wrong!!!!

Juan
Member
Posts: 9
Joined: Thu Jun 29, 2006 3:48 pm

Post by Juan » Thu Jun 29, 2006 3:56 pm

Elapsed time is wall clock time.
Copu time is just the accumulation of measured CPU usage attributed to the job - not the same as the actual total cpu that job consumed due to capture ratios etc.

So A job can run for an hour and use much less cpu time than an hour - waiting for I/O e.g.

Post Reply

FREE TUTORIALS

Tutorials
Free tutorials from mainframegurukul
  • JCL Tutorial
    Covers all important JCL concepts.
  • Cobol Tutorial
    This tutorials covers all Cobol Topics from STRING to COMP-3.
  • DB2 Tutorial
    DB2 Tutorial focuses on DB2 COBOL Programming.
  • SORT Tutorial
    This Tutorial covers all important aspects of DFSORT with examples
  • CICS Tutorial
    This CICS tutorial covers CICS concepts and CICS Basics, CICS COBOL Programming.
Interview
Mainframe Interview questions



Other References
Mainframe Tools and others