Squeezing data into the data structure

This story is about a capacity optimization task that we recently carried out at Plumbr. It all started with an innocent-looking…

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Examples of caching backfiring on performance

In 2015 it should not surprise anyone that caching frequently used data is likely to improve the performance of the…

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GC tuning in practice

Tuning Garbage Collection is no different from any other performance-tuning activities. Instead of giving in to temptation for tweaking random…

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What is Garbage Collection?

The following is an example from our Garbage Collection Handbook which will be published in the forthcoming weeks. In the meanwhile, take…

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Logging stop-the-world pauses in JVM

Different events can cause the JVM to pause all the application threads. Such pauses are called Stop-The-World (STW) pauses. The…

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Turning on GC logging at runtime

There is always the next JVM behaving badly. And you know by heart that if you just could have had…

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What is wrong with troubleshooting tools?

“Troubleshooting is a form of problem solving applied to repair failed software. It is a logical, systematic search for the…

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Minor GC vs Major GC vs Full GC

While working with the GC pause detection functionality in Plumbr I was forced to work my way through loads of…

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Why is my JVM having access to less memory than specified via -Xmx?

“Hey, can you drop by and take a look at something weird”. This is how I started to look into…

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