Re: RLS implementation for CDS's in DFHSM

Our top recommendation for improving DFSMShsm throughput is to use RLS for the HSM CDSes. In nonRLS mode, each HSM locks access to the CDSes while it performs its queued up I/O requests. While that host has the CDSes locked, all other HSM hosts are queueing up their I/O. When a host gets

Re: RLS implementation for CDS's in DFHSM

. -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Lizette Koehler Sent: 08 December, 2015 14:03 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: RLS implementation for CDS's in DFHSM So we just converted to RLS. We are not too worried about a CF

Re: RLS implementation for CDS's in DFHSM

- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of R.S. Sent: 08 December, 2015 17:09 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: RLS implementation for CDS's in DFHSM RLS does require CF (coupling facility). Not everyone has CF. Assuming one get internal CF fo

RLS implementation for CDS's in DFHSM

Thank you to all that have responded to my inquiry. Sincerely; Kenneth J. Kripke Kenneth J. Kripke k.kri...@comcast.net -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to

RLS implementation for CDS's in DFHSM

This is an inquiry to see if there are shops that have implemented Record Level Sharing for their CDS's in DFHSM. 1. Concerns are how frequent have other shops experienced failures in the SMSVSAM asid. 2. Do you have multiple ARCMDxx members to cover in the event of an SMSVSAM

Re: RLS implementation for CDS's in DFHSM

Of Vernooij, CP (ITOPT1) - KLM Sent: Tuesday, December 08, 2015 7:57 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: RLS implementation for CDS's in DFHSM Is RLS really so few used or so scary? I remember a quote from a z/OS course where RLS for Catalogs was introduced. The Catalog people asked

Re: RLS implementation for CDS's in DFHSM

December, 2015 9:38 To: IBM-MAIN@LISTSERV.UA.EDU Subject: RLS implementation for CDS's in DFHSM This is an inquiry to see if there are shops that have implemented Record Level Sharing for their CDS's in DFHSM. 1. Concerns are how frequent have other shops experienced failures in the SMSVSAM

Re: RLS implementation for CDS's in DFHSM

Fingers crossed but we have been using it for quite a while with no issues. Dan On Tuesday, 8 December 2015, Kenneth J. Kripke wrote: > This is an inquiry to see if there are shops that have implemented Record > Level Sharing for their CDS's in DFHSM. > > 1.

Re: RLS implementation for CDS's in DFHSM

. Lizette > -Original Message- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > Behalf Of Kenneth J. Kripke > Sent: Tuesday, December 08, 2015 1:38 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: RLS implementation for CDS's in DFHSM > > T

Re: RLS implementation for CDS's in DFHSM

or jo.skip.robin...@gmail.com -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of R.S. Sent: Tuesday, December 08, 2015 8:09 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: (External):Re: RLS implementation for CDS's in DFHSM RLS does require CF

Re: RLS implementation for CDS's in DFHSM

: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Kenneth J. Kripke Sent: 08 December, 2015 9:38 To: IBM-MAIN@LISTSERV.UA.EDU Subject: RLS implementation for CDS's in DFHSM This is an inquiry to see if there are shops that have implemented Record Level Sharing

Re: RLS implementation for CDS's in DFHSM

R.S. wrote: Q: What is the performance gain from having Catalog in RLS? Well, that's a performance question, so the answer is "It depends." In my opinion, any catalog contention you have for update activity is likely to evaporate when it's accessed with RLS. The catalog-level lock