https://tsvinc.dev/tags/metaspace/ Recent content in Metaspace on tsvinc Hugo en-us Mon, 06 Jul 2026 00:00:00 +0000 https://tsvinc.dev/posts/quarkus-metaspace-floor-256mb/ Mon, 06 Jul 2026 00:00:00 +0000 https://tsvinc.dev/posts/quarkus-metaspace-floor-256mb/ <p><em>Part 24 of <a href="https://tsvinc.dev/series/micronaut-256mb/">the memory benchmark series</a>. Assumes familiarity with JVM memory regions and container memory limits.</em></p> <h2 id="96-at-idle">96% at Idle</h2> <p>Quarkus JVM, jdbc-synth scenario, 256 MB container (<code>--memory=256m</code>, swap disabled). The app starts. Prometheus reports heap usage: 37 MB used out of a 62 MB cap. Healthy. Normal. Unremarkable.</p> <p>Container RSS at idle: 246 MB.</p> <p>The first k6 ramp hits, allocates a few buffers, and the OOM killer fires. Twenty-six restarts. 42.8 req/s. 53% error rate. FAILED.</p>