Felipe Maschio

Software engineer from Curitiba, Brazil, focused on JVM performance and thread-dump analysis. He is the founder of ThreadMine, a JVM thread dump analyzer. Experienced in Project Loom and virtual thread pinning and the quiet ways it caps throughput in production.

2 articles

1,062 views

Felipe Maschio Sep 9, 2026 1 views

Masking a JVM thread dump without breaking the analysis

A few weeks ago I posted on r/java about detecting virtual thread pinning from a plain thread dump. The technical discussion was fine. The …

Java Java Core

Felipe Maschio Jul 16, 2026 1,061 views

Your Loom App Quietly Became a Thread Pool Again: A Field Guide to Virtual Thread Pinning

The incident that taught me to respect pinning looked like nothing. A service freshly migrated to virtual threads, a load test that …

Java Java Core

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