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
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
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
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