Throttling application when in background

[damonkashu]

Does CEF automatically throttle rendering, javascript, or anything at all when it is in the background or minimized?

I'd like to optimize our application's performance when backgrounded/minimized, and I want to ensure CEF or chromium isn't already doing that for me.

If there are other ways I can forcibly throttle my application to throttle to a slower update rate, that would be great.

[damonkashu]

Note, I am not using OSR, though from what I'm reading, it may give me more flexibility over controlling this?

[Czarek]

Set browser window size to 0x0, see https://github.com/cztomczak/phpdesktop/issues/179

[magreenblatt]

What platform are you using?

If the browser is part of a normal window hierarchy then it will reduce resource usage when it receives the platform-specific window hide notification. You can see this in action by watching CPU usage when you load https://webkit.org/blog-files/3d-transf ... ircle.html in cefclient and then minimize the window.

[damonkashu]

I am testing my application on windows 7 and 10. Indeed it is part of the normal window hierarchy.

Is minimizing going to achieve the same effect as setting the window size to 0x0?

[magreenblatt]

I am testing my application on windows 7 and 10. Indeed it is part of the normal window hierarchy.

Is minimizing going to achieve the same effect as setting the window size to 0x0?

It should, yes.

[merceyz]

I'm using an OffScreen instance, is there a "simple" way to turn rendering on/off?

I only require it to render so I can take a screenshot of the page, not while loading etc.

I already tried setting the window size to 0x0 and calling WasHidden(true/false) but neither gave me the result I was after.

I would also like to disable CSS Transitions and Animations (go to 100% instantly and no looping), since it's OffScreen smoothness and animations isn't really necessary.