Show HN: Await-Tree – Visualize Async Rust Task Execution in Real-Time

2 comments

• $sitkack 17 hours ago

  For someone looking for the visualization, here it is.

      // foo [1.006s]
      //   bar [1.006s]
      //     baz in bar [1.006s]
      //       working in baz 3 [1.006s]
      //   baz [1.006s]
      //     working in baz 2 [1.006s]
      println!("{tree}");
  

  Would it be possible to render the tree using a flamegraph?
  [-]
  • $yoshuaw 15 hours ago

    `await-tree` seems to be able to output to JSON. As long as all keys are unique, it should be straightforward to convert it into the Collapsed Stack Format most flame graph tools natively ingest.

    As a reference: I wrote a Dhat-JSON to Flamegraph conversion tool a while ago for fun. Adapting this to instead convert from the await-tree JSON format probably shouldn't take long:

    https://github.com/yoshuawuyts/dhat-to-flamegraph/blob/main/...