Anthony, I notice similar results on our 1.13 system. When I used Initial view of 1. VOLUME, a 29,000 list takes 20 seconds. When I used 2. SPACE it takes 700 seconds. When monitoring my TSO session, it was using around 20% CPU with an EXCP rate of 100/second.
Regards, John K From: Anthony Fletcher <flet...@nz1.ibm.com> To: IBM-MAIN@listserv.ua.edu Date: 04/22/2013 10:34 PM Subject: ISPF 3.4 Performance degradation on z/OS 1.13 Sent by: IBM Mainframe Discussion List <IBM-MAIN@listserv.ua.edu> We have a customer running on a z800 in a capped LPAR. We just converted them from z/OS 1.12 to z/OS 1.13 and have found that performance has degraded. They are looking at a list of data sets - approx 98,000 under a HLQ, say ABCD with the Initial view set to 2. SPACE On z/OS 1.12 this list was retrieved in under 10 seconds On z/OS 1.13 this list took 20 Minutes to return. If the Initial View is changed to 1. Volumes then the performance is much the same. The view is paged right to get the space values, on the 1.12 system it comes back in seconds on the 1.13 system it takes minutes to come back. Many of the 98,000 data sets are on TAPE or migrated. Anyone recognise a feature that came with z/OS 1.13 that might cause this change in behaviour? ---------------------------------------------------------------------- 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
