It's applied everywhere at IBM Dallas but we are just now starting to test.
Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Roland Fernandez Sent: Friday, August 10, 2018 9:11 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Vulnerability mitigation with OSPROTECT Good Friday Everyone! Has anyone implemented OSPROTECT=SYSTEM or OSPROTECT=1 in IEASYSxx yet? I'm primarily concerned about the overhead and how (or even if) it can be derived from the usual metrics. This is the z/OS portion of the Meltdown mitigation implemented via APAR OA55233. It only works if you have the appropriate MCLs applied. The Init and Tuning Reference was recently update to include this parameter. The guidance for OSPROTECT=1 cites a "...minor impact to system performance and/or workload execution." I presume "minor" could be subjective depending on your workload characteristics. Thanks for your input! Roland Fernandez Pacific Life ---------------------------------------------------------------------- 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
