Linux: 100% CPU when using external-message-pump with Version 84+

[magreenblatt]

Original report by Stephan Engelmann (Bitbucket: Stephan Engelmann).

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This issue is related to Issue #2809. I already reported my findings there, but was unsure if it was the right place, as the ticket was already closed.

We tested the fix using the CEF Automated build cef_binary_84.4.1+gfdc7504+chromium-84.0.4147.105_linux64.tar.bz2.

After building the test applications and starting the cefclient application with the external message pump flag one core is always using 100% CPU.

./cefclient --external-message-loop

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[magreenblatt]

Original changes by Stephan Engelmann (Bitbucket: Stephan Engelmann).

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• edited description

[magreenblatt]

Original changes by Stephan Engelmann (Bitbucket: Stephan Engelmann).

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• edited description

[magreenblatt]

Original comment by Stephan Engelmann (Bitbucket: Stephan Engelmann).

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I removed a lot of possibly not relevant information from the ticket.

[magreenblatt]

Original comment by Salvador Diaz Fau (Bitbucket: salvadordf, GitHub: salvadordf).

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We also detected this issue using CEF4Delphi demos in Linux with CEF 88.1.6

[magreenblatt]

Original comment by Salvador Diaz Fau (Bitbucket: salvadordf, GitHub: salvadordf).

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I just tested this issue with the latest cefclient again (CEF 88.2.8) and I can reproduce it only when I execute this command :

./cefclient --multi-threaded-message-loop

If I remove the multi-threaded-message-loop switch then cefclient works perfectly and no core is used at 100%

Edit: fixed the command that reproduces this issue.