RFR: 8112: Flamegraph model creation performance improvements

[Alex Macdonald]

On Fri, 30 Jun 2023 10:20:51 GMT, Vincent Alexander Beelte <duke at openjdk.org> wrote:

> merged it and "clean verify" seems to work. now the ui tests show some other strange behavior even on master which all of the following comments are about. 

Unfortunately the uitests are finicky on a good day, it might be better to run using `-fae` so they'll proceed even if they fail. Might give a better picture at which ones are the culprit.

> I am currently stuck at an issue where some test opens an "import connections" dialog and then inputs something like "7tmp7testExportImport2835912463012025242.xml" where the expected/asserted input is something like "/tmp/testExportImport2835912463012025242.xml". Which looks like the test driver forgot to hold shift when typing the slashes :)

Honestly could be something similar. A lot of times I see something where it lags for a second while typing, so if it's looking for a string like "localhost" it might have actually entered "localhooooooooost". The sad thing is that the failures seem to cascade, so if it times out looking for a dialog it can impact the subsequent tests. If you also happen to be using Wayland it might end up clicking in the wrong spots too. Good times.

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PR Comment: https://git.openjdk.org/jmc/pull/502#issuecomment-1614650071