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Update Log

This document is refreshed as additional z/VM performance information becomes available. These updates are listed below:

Date

Action

14 Sep 2023

Warning-Track Interruption Facility

12 Sep 2023

Support for Guests Greater Than One Terabyte

16 Sep 2022

z/VM 7.3

26 May 2022

z/VM 7.2
Added z/VM 7.2 section "Host Exploitation of Crypto Interruptions"

06 Aug 2021

z/VM 7.2
Added z/VM 7.2 section "Dynamic Memory Downgrade"

03 Mar 2021

z/VM 7.2
Added z/VM 7.2 section "SSL OCSP Support"

26 Feb 2021

z/VM 7.2
Added z/VM 7.2 section "Guest Instruction Simulation Improvements"

26 Feb 2021

z/VM 7.2
Added z/VM 7.2 section "4 TB Exploitation"

26 Feb 2021

z/VM 7.2
Added z/VM 7.2 section "z/HPF I/O For Dumps"

19 Nov 2020

z/VM 7.2
Added z/VM 7.2 section "Dedicated OSA vs. VSwitch Update"

15 Sep 2020

z/VM 7.2

07 Jan 2020

z/VM 7.1
Added z/VM 7.1 section "Fast Minidisk Erase"

01 Aug 2019

z/VM 7.1
Added z/VM 7.1 section "Eighty Logical Processors"

23 May 2019

z/VM 7.1
Added z/VM 7.1 section "Vswitch Priority Queueing"

14 Feb 2019

z/VM 7.1
Added z/VM 7.1 section "TLS/SSL Server Elliptic Curve Support"

03 Dec 2018

z/VM 6.4
Added z/VM 6.4 section "Pause-Reduced Garbage Collection for Java"

21 Sep 2018

z/VM 6.4
Added z/VM 6.4 section "Unparking"

15 Dec 2017

Added section "Encrypted Paging"

09 Jun 2017

Added section "Dump Channel Program Changes"

20 Apr 2017

Refreshed section "TLS/SSL Server Changes"

04 Apr 2017

Added section "Concurrent I/O Support for XIV"

11 Nov 2016

z/VM 6.4

27 Mar 2015

z/VM for z13

12 Jun 2014

Added section "CPU Pooling"

09 Aug 2013

z/VM 6.3

11 May 2012

Added section "High Performance FICON"

02 Dec 2011

z/VM 6.2

16 Dec 2008

Added section "CMS-Based SSL Server"

19 Sep 2008

z/VM 5.4

19 Feb 2008

Added section "Memory Management: VMRM-CMM and CMMA"

08 Nov 2007

Added section "Virtual Switch Link Aggregation"

01 Nov 2007

Added section "Diagnose X'9C' Support"

29 Jun 2007

z/VM 5.3

07 Aug 2006

Added section "z/VM PAV Exploitation"

01 Feb 2006

Added section "QDIO Enhanced Buffer State Management"

12 Jan 2006

Added section "Layer 3 and Layer 2 Comparisons"

16 Dec 2005

z/VM 5.2

05 Jan 2005

Added section "Virtual Switch Layer 2 Support"

24 Sep 2004

z/VM 5.1

23 Feb 2004

"Queued I/O Assist" and "TCP/IP Device Layer MP Support" sections added

15 Aug 2003

z/VM 4.4

18 Jun 2002

"Enhanced Timer Management" and "VM Guest LAN: QDIO Simulation" sections added

31 May 2002

z/VM 4.3

03 May 2002

Added section "Guest Support for FICON CTCA"

27 Mar 2002

z/VM 4.2

22 Jun 2001

z/VM 4.1

16 Mar 2001

Added section "Linux Guest IUCV Driver"

22 Feb 2001

z/VM 3.1 (base document)

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