That's the way PDS's work. Bigger directory more connect time. Member access is trivial.
-teD Original Message From: Kreiter IBM-Main Sent: Thursday, April 28, 2016 08:33 To: IBM-MAIN@LISTSERV.UA.EDU Reply To: IBM Mainframe Discussion List Subject: PDS I/O Performance Improvement Hello, I'm looking for some suggestions on how to possibly improve I/O performance to a PDS. A user is running a job that is reading a large parmlib (through PROJCL I believe). I think the access is random rather than sequential. The parmlib has ~180,000 members is has an LRECL of 80/BLKSIZE of 27,920. The performance team has reviewed a found ~ 6ms response time to the volume that houses the PDS with most of the time being connect time. Thanks, Chuck ---------------------------------------------------------------------- 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
