Java Virtual Machine

Modifying a Zabbix Template for WildFly JVM Monitoring

Zabbix provides templates easy to setup which do not require any external scripts. As an example, you can check one of my previous blog post on the subject where I monitored a WildFly server. These(…)

My JVM Memory Analyzes Toolkit

One of the most common errors while running an application is “out of memory”. And Java is no different besides errors being named exceptions. The exact exception name you might have encountered is: java.lang.OutOfMemoryError And, in most cases,(…)

Defining Custom Monitoring Metric in Zabbix

In this blog, we will see how to add custom monitoring metric into Zabbix and, more precisely, get Java Virtual Machine (JVM) garbage collector heap statics. jstat OpenJDK includes an interesting tool to monitor a JVM: jstat.

Java Mission Control 5.2 (7u40) deserves your attention

Recently, some new versions of java were made available. Most people think Java updates are boring and only security-oriented. But one of the last updates (7u40) includes a feature which deserves attention. I mean Java Mission Control 5.2. Hotspot incoming(…)

Understanding JVM Java memory leaks

Lots of people think that Java is free of memory management as the JVM uses a Garbage Collector. The goal of this collector is to free objects that are no longer used in the program without the developer being(…)

A comparison of Java Virtual Machines: Hotspot JVM vs JRockit JVM

You might know that there are many JVMs available today, but do you know the difference between them? In this blog I will not state all JVMs as it will take too much time 🙂 But I will talk about(…)

Ceylon: a new language inspired from Java

On 26 February I went to the University of Bern with my colleague Arnaud Berbier to follow an introductory conference on Ceylon, a new language inspired from Java. Unfortunately not presented by Gavin King, the leading developer of Ceylon(…)