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bamlab / flashlight

📱⚡️ Lighthouse for Mobile - audits your app and gives a performance score to your Android apps (native, React Native, Flutter..). Measure performance on CLI, E2E tests, CI...
https://docs.flashlight.dev
MIT License
1.22k stars 29 forks source link

Q: What does "Process id has changed" error mean? #180

Closed Nodonisko closed 11 months ago

Nodonisko commented 12 months ago

Hi, I sometimes getting this error:

Screenshot 2023-12-08 at 16 24 19

I tried restart app, restart flashlight but it did not help and then it suddently start to work and work for a while and then again this error.

What does this error mean?

Thanks.

Almouro commented 11 months ago

Hi @Nodonisko!

It's supposed to mean that Flashlight detected that the app has a different process id than before. This usually happens if the app is restarted (or has crashed) for instance

(Technically it happens when Flashlight doesn't find a file for the app process https://github.com/bamlab/flashlight/blob/main/packages/platforms/android/cpp-profiler/src/main.cpp#L49)

But it's quite weird that it happens so often 🤔 Does it happen for every app or just this one?

KamakshiOjha commented 11 months ago

The 'Process id has changed' error indicates a disruption in the tracking process of the Lighthouse for Mobile app. This error commonly occurs when there is a sudden change or interruption in the application's execution environment, leading to a mismatch in process identification. To address this, first, analyze the error message context and check the project documentation for any specific information about this error. Investigate the codebase for potential causes, considering recent changes or updates that might have triggered the issue.

Nodonisko commented 11 months ago

Thanks for explanation @Almouro I did tried Flashlight only with this one app. I will close issue now and reopen it if I encounter it again.