Exploring JVM Optimization with JMH, hsdis, and PerfASM

2023/08/22

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The article explores the optimization of the Java 19 JVM using JMH, hsdis, and PerfASM. It delves into the execution platform, the physical CPU, and discusses the implications of different matrix multiplication algorithms on runtime. The installation of Perf on a Linux machine is explained, along with the importance of setting the 'perf_event_paranoia' parameter. The article then focuses on matrix multiplication as a benchmark for computational throughput and explains the baseline algorithm and its implementation. It also highlights the issue of cache congestion in larger matrix multiplications and how it can be optimized. The article provides insights into low-level benchmarking and offers developers a deeper understanding of JVM optimization techniques.