Since DASD has become so fast, many shops--including ours--long ago dropped VIO processing. A VIO request simply goes to a SYSALLDA volume. In any case, VIO would be very expensive way to improve performance of a very large data set.
. . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-302-7535 Office [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Dana Mitchell Sent: Thursday, April 28, 2016 7:34 AM To: [email protected] Subject: (External):Re: PDS I/O Performance Improvement Wow! flashback from the 80's! We had a CICS region, seriously storage constrained with huge COBOL programs, it would do storage compressions multiple times a minute. A temporary performance boost came from copying the main loadlib into VIO dataset at starup. Dana On Thu, 28 Apr 2016 14:22:37 +0100, Martin Packer <[email protected]> wrote: >If it's a matter of repeated reading why not copy to VIO in Central >Storage and read from there? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
