I'm having an issue with my compose app and too much CPU being used. There should be less than 1% of the CPU used but it is up to 20% in some cases and other apps slow down quite a bit. I do not believe this is a problem with compose or coroutines, but it may be a problem with how I am using them. The below links with line numbers show the chain of how I'm using a task that runs in a background coroutine. Does anyone know how I can optimize this? 1. Line 45 of https://github.com/recursiveg87/Grim-Locations/blob/master/src/main/kotlin/io/grimlocations/ui/view/EditorView.kt 2. Line 37 of https://github.com/recursiveg87/Grim-Locations/blob/master/src/main/kotlin/io/grimlocations/ui/viewmodel/event/EditorEvents.kt 3. Line 81 of https://github.com/recursiveg87/Grim-Locations/blob/master/src/main/kotlin/io/grimlocations/ui/viewmodel/reducer/EditorReducers.kt 4. Line 95 of https://github.com/recursiveg87/Grim-Locations/blob/master/src/main/kotlin/io/grimlocations/ui/viewmodel/reducer/EditorReducers.kt 5. LaunchEffect wrapper I used in item 1. https://github.com/recursiveg87/Grim-Locations/blob/master/src/main/kotlin/io/grimlocations/framework/util/LaunchedEffect.kt To give some more background on what I'm trying to do here. I am detecting if an app is running, and if it is I check if a file was changed, if it was then I load the file's contents into the compose app.

Pro tip: you can link to specific lines in GitHub

Hi, thanks for the replies. Passing the vm as the key is a great idea and I'll keep that in mind. But in this case there is only ever one instance of that vm created by my vm manager. So I don't believe that is effecting it. The coroutine scope you mentioned I can get rid of. And no I haven't used a profiler and don't have experience with any. I will take a look around for one.

IDEA got rather cool Async Profiler, see https://www.jetbrains.com/help/idea/async-profiler.html

java flight recorder is also pretty cool and comes with the jdk

@olonho but that's for only ultimate version, right? 😭

@Zach Klippenstein (he/him) [MOD] I'm not sure the underlying mechanics, but your suggestions fixed the issue. It now doesn't go above 2% CPU. Thanks for your help