An in-depth analysis of a critical Java performance issue where unprotected concurrent TreeMap modifications led to 3,200% CPU utilization. The investigation revealed how thread interleaving can create infinite loops in red-black trees, with experiments across multiple programming languages demonstrating similar vulnerabilities.

https://josephmate.github.io/2025-02-26-3200p-cpu-util/

#java #concurrency #performance #debugging #datastructures