google/pprof

New flame graph appears to reset the profile state in an unexpected way

aalexand opened this issue · 1 comments

aalexand commented

Steps to reproduce:

  • Run a command like

    go run pprof.go -http $HOSTNAME:8080 internal/report/testdata/sample.bin internal/report/testdata/sample.cpu

    Any profile can be used.

  • Visit the printed URL to get to the web UI. The graph view will display as expected.

  • Then navigate to View -> Flame Graph (which is the new d3-less implementation of the flame graph view).
    The flame graph will display as expected.

  • Now navigate back to the graph view. It will not display this time and "Focus expression matched no samples" message shows.

  • Old flame graph view also doesn't work at this point. The new one still displays correctly.

@ghemawat FYI

ghemawat commented

I will send a PR with a fix. Thanks for the report.