CEF / Chromium render process CPU usage

Question

I have used CEF4Delphi to embed CEF / Chromium in my Delphi XE 10.1 application. I am currently at CEF Version 3.2987.1597.gffc5773 (Chromium Version 57.0.2987.110), 32 bit.

I can see the render process in the Windows Task Manager normally staying at 0% CPU usage when customers are not browsing, but then sometimes the render process seems to get stuck and grabs all the CPU it can get (100% of a single CPU, 16% of total since I have 6 available), even when the user is doing nothing and the browser window is not visible. When stuck it seems to remain stuck until I end the process, several hours has been observed. I have turned on verbose logging but nothing gets logged as long as the user is not doing anything. I do get lots of logging at startup and when the user is actively browsing.

Any tips on how to resolve this? I only see this issue on my Terminal Server and have not been able to reproduce the behaviour myself either on dev machines or the TS. Last time I saw this behaviour was about two hours after start up of the application.

Any help appreciated.

Thanks, Sjur

Answer 1

Sorry for the late answer.

Close your app and clear the cache and cookies directories.