Posts by Francesco Nigro

Posts by Francesco Nigro

Authors Posts by Francesco Nigro

Francesco Nigro

Senior Principal Software Engineer at Red Hat (now IBM!) working on Quarkus performance.

Posts

Harder, Better, Faster, Stronger... Earlier!
June 10, 2026 tags: #performance #jvm
By

Francesco Nigro

Throughput averages hide warmup problems. On 4 cores with 100 connections, C2 compiler threads are starved by platform threads. pidstat and JFR show how.

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Why isn't Quarkus 2x faster than Spring on my machine?
June 08, 2026 tags: #performance #containers
By

Francesco Nigro

Our perf-lab shows Quarkus 2x faster than Spring, but a community member only sees 1.19x locally. The culprit: a userspace TCP proxy hidden inside rootless podman.

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