NOPE, EXCP counts in SMF 30 records can be the count of records, or blocks, or the number of SSCH (Start Subchannel, was SIO) commands or EXCP commands issued, depending what the Access Method decided to pass into SMF in the IFASMFEX exit that accumulates the type 30 EXCP fields.
And zero is a valid value for an access method to send over, e.g. SORTWORKs. Barry Merrilly yours, Herbert W. Barry Merrill, PhD President-Programmer Merrill Consultants MXG Software 10717 Cromwell Drive technical questions: supp...@mxg.com Dallas, TX 75229 http://www.mxg.com admin questions: ad...@mxg.com tel: 214 351 1966 fax: 214 350 3694 -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Peter Hunkeler Sent: Monday, September 25, 2017 9:16 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: SMF30 EXCP count confusion SMF manual, Chapter 10 "EXCP Count" seems to clearly state that EXCP counts are indeed the number of EXCPs executed. Fields SMF30TEP and SMF30TEX are described as "Total blocks transferred (accumulated EXCP counts). I would assume that these fields still contain the number of EXCPs executed and not the number of blocks transferred. IMHO, the number of blocks is greater or equal to number of EXCPs. So, the number of EXCPs is only a relative measure of the I/O done when comparing multiple runs of the same program using the same I/O attributes (blocksize, bufno, etc. etc). It is not a direct measure of the abount of data really transferred. Am I right, or what am I missing? -- Peter Hunkeler ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
