So what is the max number of records processed per skip sequential access? However many CI that is, you should set BUFND to be that times 2.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Arun Venkatratnam Sent: Sunday, January 7, 2018 10:22 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: [IBM-MAIN] VSAM Performance - CPU reduction Ron, About 80% of the records qualify from the second file. I tried running the job with BUFND of 2 for the second file. It increased the EXCPs significantly (from strobe report) on the data records for the 2nd file and the CPU time went over the other runs and the elapsed time also increased. The job runs better with higher values of BUFND for the second file. You had mentioned that the job reads 30 CI for every skip-seq access. Could you please tell how did you arrive at that number. LISTCAT shows that for a CISZ of 26KB, there are 30 CI in 1 CA. Thanks Arun ---------------------------------------------------------------------- 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
