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Red Hat Enterprise Linux (RHEL) 8.2 released

April 28, 2020 July 18, 2020 / By Eberhard Pasch / Linux Distributions, Red Hat / Leave a Comment

On April 21st, 2020 Red Hat announced RHEL 8.2 the second service pack for their new enterprise version. With the transition of RHEL 7.8 to Maintenance Mode 2 this is now the premier enterprise distribution. 

The kernel level for 8.2 … Read the rest

Red Hat Enterprise Linux (RHEL) 7.8 released

April 1, 2020 July 18, 2020 / By Eberhard Pasch / Linux Distributions, Red Hat / Leave a Comment

On March 31th, 2020 Red Hat announced RHEL 7.8 the next regular update to their flag ship operating system. This the successor of RHEL 7.7. With this release in August RHEL 7 transitions to Maintenance Support 2 phase. So … Read the rest

compression

zlib acceleration

January 24, 2020 January 5, 2022 / By Eberhard Pasch / Hardware, Linux / Leave a Comment

With the z15 the CPU in System Z has gotten the ability to compress data into the zlib format really fast. The feature is officially called Integrated Accelerator for zEnterprise Data Compression (zEDC). This is know as zlib acceleration. Of … Read the rest

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SUSE Linux Enterprise Server 12 SP5 (SLES12 SP5) released

December 20, 2019 December 20, 2019 / By Eberhard Pasch / Linux Distributions, SUSE / Leave a Comment

On December 9th 2019,  SUSE announced SLES12 SP5 the follow up service pack after SLES 12 SP4.  This release is the last service pack of SLES12. The new features for System Z include:

  • First z15 support in compiler, binutils
… Read the rest

Secure Boot / Secure IPL

December 4, 2019 June 21, 2021 / By Eberhard Pasch / Hardware, Hint and Tips, Linux / Leave a Comment

The new IBM z15 / LinuxONE Emperor III introduced the possibility for an operating system to boot in a secure fashion. The chain of trust is verified from the hardware throughout the whole firmware up into the operating system. Right … Read the rest

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Red Hat Enterprise Linux (RHEL) 8.1 released

November 16, 2019 March 2, 2020 / By Eberhard Pasch / Linux Distributions, Red Hat / 2 Comments

On November 6th, 2019 Red Hat announced RHEL 8.1 the first service pack for their new enterprise version. 

The kernel level for 8.1 is kernel-4.18.0-147.el8. This is a bug fix and feature release. On System Z RHEL 8.1 is better … Read the rest

z15

z15

September 12, 2019 April 1, 2022 / By Eberhard Pasch / Hardware / 3 Comments

Today September 12th 2019 IBM announced the new generation of mainframe called IBM z15. Planned availability date is September 23, 2019. And of course they also announced LinuxONE III. Like the z14 ZR1 this machine now also fits into a … Read the rest

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Red Hat Enterprise Linux (RHEL) 7.7 released

August 6, 2019 July 18, 2020 / By Eberhard Pasch / Linux Distributions, Red Hat / Leave a Comment

On August 6th, 2019 Red Hat announced RHEL 7.7 the next regular update to their flag ship operating system. This the successor of RHEL 7.6.

The kernel level for 7.7 is kernel-3.10.0-1062.el7. Please note that the kernel-alt and the … Read the rest

Hypervisor monitoring with hyptop

August 6, 2019 September 12, 2019 / By Eberhard Pasch / Hardware, Hint and Tips, Linux / Leave a Comment

System Z is designed to efficiently run multiple different workloads at the same time. From Linux you can with proper authorization monitor the other LPARs. The tool for this is hyptop.

Hyptop is documented in the man page (“man … Read the rest

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SUSE Linux Enterprise Server 15 SP1 (SLES15 SP1) released

June 24, 2019 July 23, 2019 / By Eberhard Pasch / Linux Distributions, SUSE / Leave a Comment

On June 24th 2019, one year after the first release, SUSE announced SLES15 SP1 the first service pack for SLES 15.  This release adds many new features for System Z and also for using SLES15 SP1 as a KVM … Read the rest

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Recent Posts

  • CPU Measurement Facility (CPUMF) for Linux on zSystems
  • IBM z16
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  • Red Hat Enterprise Linux (RHEL) 8.5 released
  • SUSE Linux Enterprise Server SLES 15 SP3 released
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  • SUSE Linux Enterprise Server 15 SP2 (SLES15 SP2) released
  • z15 T02 / LinuxONE III LT2

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  1. SUSE Linux Enterprise Server 12 SP5 (SLES12 SP5) released
  2. z/Architecture Principles of Operations
  3. zlib acceleration
  4. z15
  5. SUSE Linux Enterprise Server 15 SP1 (SLES15 SP1) released

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