Topic: profiling
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Reading a flame graph: width is samples, the x-axis is not time
A flame graph stacks sampled call stacks so that frame width is the share of samples and height is stack depth; the x-axis is sorted alphabetically, not by time. Read wide plateaus at the top as on-CPU hot spots, wide frames with many thin children as callers to call less often, and remember that a CPU flame graph cannot show waiting.
Machine-readable: JSON