Why You Should Tune Code Before Your Garbage Collector

A benchmark-driven analysis showing that optimizing Java code (specifically removing redundant SLF4J logging) has a far greater impact on latency than tuning the garbage collector. Using JLBH to test Chronicle-FIX at 50K messages/second, the results show that eliminating one log line per message reduces p99.99 latency by three orders of magnitude — from ~20ms down to single-digit microseconds. Crucially, this code change also flips the preferred GC: Shenandoah performs best with logging enabled but worst without it, while Parallel GC becomes the top choice in the optimized scenario. The key takeaway is to optimize your workload before tuning GC settings, since the workload itself determines which GC is optimal.

Nguồn: http://blog.vanillajava.blog/2026/06/why-you-should-tun-code-before-your.html. 8sync News chỉ tóm tắt và dẫn link; bản quyền nội dung thuộc tác giả và nguồn gốc.

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