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Additional Enhancements to z/VM 6.3

The following enhancements to z/VM 6.3 are being delivered via the service stream and were announced as part of the Release for Announcement - zBX and zEnterprise System enhancements

CPU Pooling

With z/VM V6.3 you now have the ability to define new entities called CPU pools. CPU pooling is designed to allow you to define and limit the CPU resources a group of z/VM guests is allowed to consume in aggregate (in terms of physical processor units - general purpose processor (CP) or Integrated Facility for Linux (IFL) speciality engine).
Requirements
  • APARs/PTFs (available June 11, 2014)
    • VM - APAR VM65418 / PTF UM34348

Environment Information Interface

A new interface in z/VM V6.3 has been designed to provide you the ability to obtain CPU resource information and to enable virtual machines to understand the characteristics of the environment in which they are running. Information is provided at many levels - the machine, logical partition, CPU pool, virtual machine.
Requirements
  • APARs/PTFs (available June 11, 2014)
    • VM - APAR VM65419 / PTF UM34348

10GbE RoCE Express Feature

z/OS guests running under z/VM V6.3 may now exploit the 10GbE RoCE Express feature. The term RoCE refers to Remote Direct Memory Access over Converged Ethernet. The 10 Gigabit Ethernet (10GbE) RoCE Express feature is designed to help reduce consumption of CPU resources for applications utilizing the TCP/IP stack (such as WebSphere Applications to understand the Server accessing a DB2 database). Use of the 10GbE RoCE Express feature is designed to help reduce network latency with memory-to-memory transfers utilizing Shared Memory Communications-Remote Direct Memory Access (SMC-R) in z/OS V2.1. It is transparent to applications and can be used for LPAR-to-LPAR communication on a single system or server-to-server communication in a multiple-CPC environment.
Requirements
  • Hardware
    • IBM zEC12 or zBC12, driver 15, bundle 21
  • APARs/PTFs
    • VM CP - APAR VM65417 / PTF UM34343
    • VM CMS - APAR VM65437 / PTF UM34401
    • VM TCP/IP - APAR PI20509 / PTF UI19055
    • VM DVF - APAR VM65572 / PTF UM34342
    • z/OS 2.1 - APAR OA43256 / PTF UA72717
    For more information about enabling and configuring z/VM for guest exploitation of RoCE, click here

zEDC Express Feature

z/OS guests running under z/VM V6.3 may now exploit the zEDC Express feature. IBM zEnterprise Data Compression (zEDC) for z/OS V2.1 and the zEDC Express feature are designed to support a new data compression function to help provide high-performance, low-latency compression without significant CPU overhead. This may help to reduce disk usage, provide optimized cross-platform exchange of data, and provide higher write rates for SMF data.
Requirements
  • Hardware
    • IBM zEC12 or zBC12, driver 15, bundle 21
  • APARs/PTFs
    • VM CP - APAR VM65417 / PTF UM34343
    • VM CMS - APAR VM65437 / PTF UM34401
    • VM TCP/IP - APAR PI20509 / PTF UI19055
    • VM DVF - APAR VM65572 / PTF UM34342
    • z/OS 2.1 - APAR OA44482 / PTF UA73687
    • z/OS 2.1 - APAR OA43256 / PTF UA72717
    For more information about enabling and configuring z/VM for guest exploitation of zEDC, click here