In <1480926979.8195705.1387049432028.javamail.r...@comcast.net>, on 12/14/2013 at 07:30 PM, DASDBILL2 <dasdbi...@comcast.net> said:
>The SMF EXCP counting code counts all EXCPs but not necessarily >all I/O requests. If your wayward job is using the STARTIO >"access method" or the Media Manager to do its output I/O to tape, Isn't MM strictly DASD? >BSAM, QSAM, BPAM, and BDAM all use EXCP BPAM, BSAM and QSAM for DASD have used EXCPVR since SAM-E. >so all their I/Os are counted by SMF. Non sequitor. Even before SAM-E there was chained scheduling; the access methods update the SMF data to reflect multiple blocks written under a single EXCP[VR]. >I don't know about VSAM. The same as with BPAM, BSAM and QSAM; the access method is responsible for updating the counts. For VSAM, of course, there are no EXCPs, just I/O through the MM. -- Shmuel (Seymour J.) Metz, SysProg and JOAT ISO position; see <http://patriot.net/~shmuel/resume/brief.html> We don't care. We don't have to care, we're Congress. (S877: The Shut up and Eat Your spam act of 2003) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN