List/Grid Tag Archives: Monitoring

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Dealing With Slow Resource Leaks

Finding resource leaks using Java-monitor Finding slow resource leaks is key to keeping your application servers up and running for very long times. Here I explain how I use Java-monitor to spot slow resource leaks and how to veri ...
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IBM AIX: Java process size monitoring

This article will provide you with a quick reference guide on how to calculate the Java process size memory footprint for Java VM processes running on IBM AIX 5.3+ OS. This is a complementary post to my original article on this s ...
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Health Checks, Run-time Asserts and Monkey Armies

After going live, we started building health checks into the system – run-time checks on operational dependencies and status to ensure that the system is setup and running correctly. Over time we have continued to add more run-t ...
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VisualVM: Monitoring Remote JVM Over SSH (JMX Or Not)

VisualVM is a great tool for monitoring JVM (5.0+) regarding memory usage, threads, GC, MBeans etc. Let’s see how to use it over SSH to monitor (or even profile, using its sampler) a remote JVM either with JMX or without it. Thi ...
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Monitoring Sucks. But Monitoring as Testing Sucks a Lot More

At Devopsdays I listened to a lot of smart people saying smart things. And to some people saying things that sounded smart, but really weren’t. It was especially confusing when you heard both of these kinds of things from the s ...
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Introduction to BTrace for Java applications

The aim of this article is to learn how to dynamically trace/observe running Java applications (JDK 6+) using BTrace without changing the code and configuration params of the applications. What is BTrace? BTrace is an open source ...
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Monitoring : Making sense of the buzz word jungle

Nowadays we are constantly reminded of the virtues of being proactive or more colloquially put “Being one step ahead of the game” when it comes to handling our businesses whether it be a SME or a multi-national cooperation. Qu ...
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Monitoring OpenJDK from the CLI

Currently I do quite a bit of work in and around the Java virtual machine (JVM), most of the time on Linux. When things go awry and I am trying to establish why, I reach for the Java performance analysis tools. These tools come in ...
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