Go 的 pprof 网络输出中的 dashed/dotted 行是什么?

What are the dashed/dotted lines in Go's pprof web output?

go tool pprof 的网络输出中,dashed/dotted 行是什么?

我发现有人提到它可以表示内联函数,但没有规范的参考。

虚线表示节点通过另一个节点的连接,未在最终输出中呈现。

https://github.com/google/pprof/blob/master/internal/graph/dotgraph.go#L311

if e.residual {
    attr = attr + ` style="dotted"`
}

残差代表

// residual edges connect nodes that were connected through a separate node, which has been removed from the report.

https://github.com/google/pprof/blob/master/internal/graph/graph.go#L243