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Red Hat OpenShift on IBM zSystems – Demystifying the steady state load

The Red Hat OpenShift Container Platform is a highly automated cloud platform providing clients an enterprise class solution for developing and deploying their workloads considering high quality QoS requirements. Such high automation and automatic maintenance of the QoS attributes come with a certain processor capacity demand to keep the system and the workloads up and running.

This presentation explains how much steady state CPU demand can be expected, how different add-ons affect it, and what benefits customers receive in return.

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Red Hat OpenShift on IBM zSystems – Demystifying the steady state load

Creation date
June 2023

EDB Postgres Advanced Server on IBM zSystems - Performance Tuning Guide

You can use EDB Postgres on Linux on IBM Z and IBM LinuxONE for database consolidation and application modernization. Learn about the key findings and recommendations of a performance study that was carried out specifically for running EDB Postgres Advanced Server on Linux on IBM Z. The recommendations given in this report can significantly boost the performance of such EDB Postgres environments.

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EDB on IBM zSystems - Tuning Guide

Creation date
May 2023

Improving Transactional Database Workloads in KVM Guests on IBM zSystems using Huge Pages

This study describes how huge pages can improve a setup with KVM where the guest runs a transactional database workload. It also gives advice on how to set up huge pages and what needs to be considered.

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Improving Transactional Database Workloads in KVM Guests on IBM zSystems using Huge Pages

Creation date
December 2022

Red Hat OpenShift on IBM zSystems – A Performance Tuning Case Study on the Example of MongoDB and ODF 4.10

Modern cloud applications require flexible data solutions on scalable cloud platforms. MongoDB is emerging as one of the most popular NoSQL databases. The OpenShift Platform (OCP) for zSystems provides a powerful computation infrastructure with OpenShift Data Foundation (ODF) as a scalable storage solution. Combining MongoDB with OCP on zSystems satisfies the demands of modern cloud applications. Applying general tuning practices can further improve the performance and efficiency of MongoDB on zSystems.

This presentation evaluates the impact of such tuning decisions through a case study with OCP 4.10 and MongoDB 4.2.

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Red Hat OpenShift on IBM zSystems – A Performance Tuning Case Study on the Example of MongoDB and ODF 4.10

Creation date
November 2022

Upgrade OSA-Express6S to OSA-Express7S: Performance Analysis

IBM Z installations often use 10GbE OSA adapters for LAN connections. IBM z15™ server hardware can be fitted with the most recent OSA-Express7S adapter, or with earlier adapters, such as OSA-Express6S. This paper shows that for some workloads patterns on IBM z15, OSA-Express7S can, at the same link speed, offer performance advantages over OSA-Express6S.

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Upgrade OSA-Express6S to OSA-Express7S: Performance Analysis

Creation date
September 2022

Unleashing the Network of Red Hat OpenShift Container Platform on z/VM and RHEL KVM for IBM Z & LinuxONE

Red Hat OpenShift Container Platform, as a highly automated hybrid cloud platform, supports both traditional and micro-service applications in the cloud. In such systems, the network is one of the critical resources, especially when performance of the overall application is critical. Having a network that efficiently and quickly exchanges data between services, external systems, and customers allows short application response times and efficient data processing.

With Multus CNI on IBM Z and IBM LinuxONE, RHOCP 4.10 supports a number of additional network plug-ins that bring along different quality attributes. This chart deck introduces the basics of these plug-ins and highlights their advantages and drawbacks. For different scenarios and conditions, learn which plug-in and further tuning can help to optimize the network performance of RHOCP on IBM Z and LinuxONE.

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Unleashing the Network of Red Hat OpenShift Container Platform on z/VM and RHEL KVM for IBM Z & LinuxONE

Creation date
July 2022

Apache Kafka on IBM zSystems - Performance Experiences, Hints and Tips

Apache Kafka is among the most popular open-source distributed event streaming platforms worldwide. It supports more than 1000 use cases, which include traditional applications like messaging and website activity tracking, but also highly sophisticated implementation scenarios around near real-time analytics and fraud detection, for example. Kafka is used by thousands of companies, including over 80% of the Fortune 100.

This presentation summarizes the key findings and recommendations of a performance study that was carried out specifically for running Apache Kafka on Linux on IBM Z. The recommendations given in this report can significantly boost the performance of Kafka environments.

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Apache Kafka on IBM zSystems - Performance Experiences, Hints and Tips

Creation date
June 2022

Red Hat OpenShift Container Platform on Z & LinuxONE - Capacity Planning: Five Checkmarks You Don't Want to Miss

Capacity panning is an essential step for implementing any OpenShift on IBM Z solution to avoid possible pitfalls during the proof-of-concept or production stage. For your estimates, you must factor in resource sharing, virtualization, overcommitment, LPAR weights, entitlements, polarization, and relative shares.

This presentation explores LPAR performance concepts and walks you through z/VM and KVM virtualization best practices - always keeping a sharp focus on OpenShift on IBM Z as the solution platform. The "Five Checkmarks" address some of the most common misconceptions in OpenShift on IBM Z capacity planning.

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Red Hat OpenShift Container Platform on Z & LinuxONE - Capacity Planning: Five Checkmarks You Don't Want to Miss

Creation date
February 2022

Exploring the performance of network adapters for Linux on IBM Z

With OSA-Express and RoCE Express, IBM provides two types of physical network adapters for Linux standard networking usage on IBM Z. In this presentation, the performance of the most recent OSA-Express, OSA-Express7S 25 GbE, is compared to its predecessor, OSA-Express6S 10 GbE, and additionally to the 25 GbE RoCE Express2.1 on an IBM z15. It is shown that the OSA-Express7S 25 GbE significantly improves performance compared to its predecessor, while still hitting some limitations. Furthermore, the strengths and weaknesses of the 25 GbE RoCE Express2.1 are highlighted. The presentation concludes describing benefits and downsides of configuring receive packet steering (RPS), a Linux networking feature, with OSA-Express7S and RoCE Express2.1.

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Exploring the performance of network adapters for Linux on IBM Z

Creation date
December 2021

Red Hat OpenShift Container Platform on Z - Performance, Quality & Best Practices

Red Hat OpenShift Container Platform as a highly automated hybrid cloud platform supports both traditional and micro-service applications in the cloud. Learn what OCP does to maintain a high service quality and how the quality attributes interact. This presentation examines the OCP quality attributes with a focus on performance when running on IBM Z. Also, find tips for tuning OCP on IBM Z for best performance.

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Red Hat OpenShift Container Platform on Z - Performance, Quality & Best Practices

Creation date
October 2021

Elasticsearch on IBM Z - Performance Experiences, Hints and Tips

Elasticsearch is the most popular enterprise search engine according to db-engines.com. The number of use cases is huge, the community is extremely active, and new releases are made available frequently. Elasticsearch can be embedded into many software stacks, for example Red Hat OpenShift. This presentation summarizes tuning hints and tips that can improve the performance of Elasticsearch significantly when running on Linux on IBM Z.

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Elasticsearch on IBM Z - Performance Experiences, Hints and Tips

Creation date
May 2021

Red Hat OpenShift Container Platform on Z Networking Performance

Cloud-native applications can use high-performance network connections to achieve high throughput and low latency. This presentation analyzes the performance of the network stack of Red Hat OpenShift on IBM Z in detail and uses this knowledge as a basis for performance tuning of hybrid cloud platforms.

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Red Hat OpenShift Container Platform on Z Networking Performance

Creation date
November 2020

Red Hat OpenShift on IBM Z - Performance Experiences, Hints and Tips

Red Hat OpenShift enables Hybrid Cloud solutions on the IBM Mainframe. This presentation summarizes the experiences of the Linux on IBM Z performance team when evaluating OpenShift on IBM Z. It also provides hints and tips for improving the performance of an OpenShift cluster for typical cloud-native applications.

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Red Hat OpenShift on IBM Z - Performance Experiences, Hints and Tips

Creation date
October 2020