`@profview` blank in VSCode when profiling Flux

Tooling VS Code
1

I’ve been experiencing a blank window when using @profview while profiling a Flux model.

The editor shows the blue/red bars for time spent in each line properly. But I can’t even save the profile to HTML - I select a save location and click OK, but no file is created and no error is surfaced.

Has anyone encountered this, or know how I can collect more details to file an issue?

Unlike previous mentions of the issue here, it doesn’t show up on second run. And if I do a run that does produce a rendered flamegraph, when I try flipping back to the profile that was blank, the previous flamegraph that did render persists.

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2

I have experienced an empty @profview as well in some different contexts. I’ve never figure out the cause because I go back some days later or have changed my code then it works. I’d like to know what’s going on as well.

What happens for you when you profile from a standalone REPL instead?

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3

Regular Profile.@profile works just fine for me in these cases. I presume it’s something in the rendering path?

4

Maybe try using ProfileCanvas.jl from the REPL and see if the issue persists.

6

Okay after making sure the buffer doesn’t fill up, it does work from ProfileCanvas in the terminal. That never worked in VSCode.

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