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
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
One of the FAQs that I get is: where can I get access to Linux on Z? Depending on what you want to do, there are several options:
Oracle 19c (19.3) is now available for Linux on Z (pdf). This is the next long term release of the Oracle database (DB). If you have an Oracle DB license covering this, you can … Read the rest
On October 30th, 2018 Red Hat announced RHEL 7.6 the next regular update to their flag ship operating system. This the successor for RHEL 7.5.
The kernel level for 7.6 is kernel-3.10.0-957.el7. Furthermore the kernel-alt introduced with RHEL 7.5, … Read the rest
PostgreSQL is one of the popular databases on Linux on Z. It’s available in all major distributions. As with every database tuning is important. Marc Beyerle, a colleague of mine, wrote an in depth article about his tuning experiences: “… Read the rest
On June 25th 2018 SUSE announced the new version of their flagship operating system for Linux on Z and LinuxONE. It’s now the 8th major version from SUSE available on the mainframe! All packages and modules have been upgraded to … Read the rest
With the publication of the Spectre and Meltdown vulnerabilities last year the new class of hardware security threads has been discovered. Everyone needs to protect against them. For Linux and System Z the most important best practice is to stay … Read the rest
IBM has announced the new z14 ZR1 / LinuxONE Rockhopper II on April 10, 2018. The key new feature for me of this box is the form factor. Instead of the decades old 24″ rack a standard 19″ rack is … Read the rest
You might have heard IBM talking about “pervasive encryption”. In this post we take a look at what’s behind this. With every encryption scheme there is the problem of access to the keys. … Read the rest