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Profiling Rust Async Tasks Until They Stopped Misbehaving (Flamegraphs Inside): Revision history

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22 November 2025

  • curprev 06:4806:48, 22 November 2025 PC talk contribs 18,720 bytes +18,720 Created page with "500px Profiling async Rust code requires detective work to uncover hidden performance bottlenecks in concurrent task execution Our production API was… dying, slowly. Not like a big crash, but a slow suffocation. Response times that used to be 50ms? Now creeping past 2 seconds. And the annoying part? All the dashboards lied to me. CPU looked fine, memory wasn’t ballooning, database queries were snappy. Everything looked norm..."
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