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Re:A 40-line fix eliminated a 400x performance gap by sllabres on Wednesday January 14, 2026 @01:01AM (#46612847)
Yes, they are made with: http://www.brendangregg.com/flamegraphs.html and

https://github.com/brendangregg/FlameGraph

Useful site if you are on to perf/eBPF/performance things with many examples and descriptions even for other uses as e.g. memory usage, disk usage (prefer heatmaps here but they are nice if you want to send someone a interactive view of their directory tree ...).

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