The counters in the ASCB will give you the metric for all I/Os done in the address space (all that are measurable by SMF, i.e.). If you want the I/O metric for an individual DDname, then you need to find a different control block pointed to by a TCB. And the comment in the ASCB's DSECT does not state whether or not the counter is reset at the end of each step or even at the end of each job. E.g., an Initiator address space may run thousands of jobs, each of whose I/O counts will be accumulated in the ASCBIOSx fields as well as in the counter's for the TCBs pertaining to each job. But at the instant you look at one of the two ASCBIOSx counters, the contents will be correct (FSVO "correct"). Two successive samples might be more revealing.
Bill Fairchild Programmer Rocket Software 408 Chamberlain Park Lane * Franklin, TN 37069-2526 * USA t: +1.617.614.4503 * e: bfairch...@rocketsoftware.com * w: www.rocketsoftware.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Mark Zelden Sent: Tuesday, May 15, 2012 1:49 PM To: IBM-MAIN@bama.ua.edu Subject: Re: EXCP count like SDSF On Tue, 15 May 2012 11:42:56 -0700, Edward Jaffe <edja...@phoenixsoftware.com> wrote: >On 5/15/2012 11:37 AM, Rob Scott wrote: >> Look at ASCBIOSX and ASCBIOSC in the ASCB (IHAASCB) > >ASCBIOSX DS D - I/O service measure extended. @0AC >* This is like ASCBIOSC but it is @0AA >* extended to 8 bytes, so its @0AA >* value continuestto grow past the@0AA >* 4GB ASCBIOSC maximum capacity. @0AA >* Serialization - CSG. @0AA > >Oops. I forgot to mention the newer 8-byte IOSX field. Thanks, Rob! > And I assumed the OP wanted data after the fact. Thanks to both of you. Although the actual requirement ("live" vs. "after the job runs") still isn't clear. Mark -- Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS mailto:m...@mzelden.com Mark's MVS Utilities: http://www.mzelden.com/mvsutil.html Systems Programming expert at http://expertanswercenter.techtarget.com/ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
