I believe a modern translation of the acronym is "Estimated eXecutions of the things that replaced Channel Programs". :-)
Seriously, I'd say you are seeing evidence of some aggressive I/O avoidance. That is, you are getting the same (or more) data in fewer operations. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Schwarz, Barry A Sent: Thursday, May 10, 2007 2:06 PM To: [email protected] Subject: DSS EXCP counts Can someone give me a hint why the EXCP count for a full volume dump for an unchanged volume would occasionally vary by ~400 between one execution and the next. I run a set of jobs weekly to dump just my system packs to tape using DFDSS. Several of the packs, such as the DLIB volumes, haven't changed in months/years (2.10 is out of support). Most weeks, the EXCP count is very close to last week's count for each volume. Once in a while, the count will jump up for a one week (or occasionally a few weeks) and then return to normal. When it happens, it seems to happen for all the jobs. Some of the packs are pretty full and the delta is less than 10%. But my SMPPTS dataset is alone on a pack and has been almost empty since my last accept run. Its normal EXCP count is 700 and an increase of 400 is a significant percentage. The times for the jobs do not show a corresponding delta. It doesn't seem to make any practical difference but it has piqued my curiosity. NOTICE: This electronic mail message and any files transmitted with it are intended exclusively for the individual or entity to which it is addressed. The message, together with any attachment, may contain confidential and/or privileged information. Any unauthorized review, use, printing, saving, copying, disclosure or distribution is strictly prohibited. If you have received this message in error, please immediately advise the sender by reply email and delete all copies. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
