Exploring JITServer on the new Linux on IBM z16 Platform

With the recent 0.32 release of Eclipse OpenJ9, the JITServer technology was officially released and made available for the Linux on IBM z System/LinuxONE platforms. This release also coincides with the recently launched IBM z16 technology. This blog will provide an overview of the JITServer technology and demonstrate some of its key benefits using the…

Innovations for Java running in containers

This blog is co-authored by Hang Shao, Marius Pirvu, Tobi Ajila and Vijay Sundaresan. 1.     Introduction Over a decade ago, the common form of deployment was large monolithic applications that handled all the business logic. In this model applications typically had long deployment windows and they were typically deployed on large on-prem server farms. Since…

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Comparing Jenkins startup in Docker

Containers are increasingly becoming the preferred way of deploying applications. They facilitate consistency between development and operations, allow for an easy way to build layers for reuse, and make it very easy for users to try out an application without having to deal with setting up all the prerequisites. However, just because applications have moved…

Leveraging Docker for Eclipse OpenJ9

This post adds on to Dockerfile for Building and Testing OpenJ9. At Eclipse OpenJ9 we want to be able to compile & test code on different architecture and operating system combinations. However we are constrained by the number of machines we have access to, so we use Docker containers to supplement them. Docker containers are…

Gather Diagnostic Data from your Containerized Java Application on the fly

Ever tried to debug Java issues in Docker containers? How does one go about doing it? This article talks about one mechanism in Eclipse OpenJ9 that makes it a lot easier to obtain debug information from Java applications running inside Docker containers. A running OpenJ9 JVM includes mechanisms for producing different types of diagnostic data when events of interest occur. In general, the…