Home » Author Archives: Wojciech Kudla

Author Archives: Wojciech Kudla

Wojciech Kudla
Wojciech is a low latency Java developer with 10 years of professional experience. His interests revolve around high performance computing, JVM internals and Linux kernel tuning. Recently focusing also on ultra-low latency networking and high precision time protocols. He gained most of his experience working for LMAX and few other high frequency trading shops.

Want to get faster with AtomicLong? Make it wait.

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I often hear that Java atomic types (java.util.concurrent.atomic) are super-fast and play nicely with highly concurrent code. Most of the time, atomics do their job in a robust and efficient manner. However, there are scenarios in which the hidden cost of unmanaged contention on atomic types becomes a serious performance issue. Let’s take a look at how  java.util.concurrent.atomic.Atomic* types are ...

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How to serialize an array of doubles with a byte (binary delta encoding for low-varianced monotonic sets of floating point data)

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Low latency systems require high performance message processing and passing. As in most cases data has to be transfered over the wire or serialised for persistence, encoding and decoding messages become a crucial part of the processing pipeline. The best results in high performance data encoding usually involve applying knowledge of application data specifics. The technique presented in this article ...

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