perfetto | Performance instrumentation and tracing for Android , Linux | Monitoring library

This question is related to my other question - How to open a chrome trace file with ui.perfetto.dev non interactively?

I am attempting to open the trace events by navigating to the following url:

I have the most trivial local http server which is wired to serve a single file from localhost. I can navigate to the resource from the browser just fine, but I need to be able to fetch the resource using the fetch web api from the browser console and that just does not work unless the console is from exactly the same origin.

Please, observe:

The resource is live:

I generate chrome trace files and with to open them non interactively from a script. However, I do not want to use the default chrome://tracing page, instead I use https://ui.perfetto.dev which I find much more convenient.

The only problem is that it is an interactive process - I need to open the file dialog and select the trace file from there, then the traces in that file are displayed. There is no network traffic here, purely Javascript.

But maybe there is another way to open trace files in https://ui.perfetto.dev that can be scripted? Or maybe there is another site that gives the same kind of GUI, but also satisfies my requirement?

By scripting I mean I want to run a script with a trace file and as a result the default browser opens with the tracing page.

My application uses background thread to initialize some of the stuff required by main thread to load the hero activity. It has bunch of locks for synchronization. I am looking for a quick way to plot possible stack traces where main thread was waiting for lock held by background thread during app startup. I checked Thread Status Monitor. How do I debug this? What's causing it? but this is talking about point to time thread state where as I am looking for all such events that occurred during startup without knowing where those occured.

I do see that this information can be found by manually inspecting startup android profile trace and looking at various thread stacks to find these occurrences, but there is lot of data to go through. It would be great if the tool can just show me # of times main thread waited for lock held by other threads, total amount of time spent and places where it held those locks.

Q1) Do we know whether Android profiler can show this? I checked https://developer.android.com/studio/profile/cpu-profiler but couldn't find it.

Q2) If not, is there any other tool that can parse profiler exported trace and print this info?

Q3) If not, do you have any pointers on how to read exported trace file. It seems to be binary. I am going through https://github.com/JetBrains/android to figure it out. It seems to be using perfetto now, but I haven't been able to write any utility to read that data yet.

Update: I discovered that CPU profiling/Systrace option shows that my main thread does remain idle or waits for some resources, however it doesn't have information around what does it wait for or what methods run after it was idle for some time. Any pointers to how to marry java method traces and sys trace view?

I begin by saying that I have a web page in which there are text areas in which I enter data. There is also a button, and through it I should write the data entered in a table of the DB, and display the same data on a table in another web page. Now, the first part, that is to write the data on the DB I was able to complete it, the second one however not. Would anyone be able to help me? below I leave you the HTML, JavaScript and C # server side they can be useful.

HTML

I have been following the instructions (https://github.com/android-rpi/device_arpi_rpi4/blob/arpi-11/README) for building Android 11 for Raspberry Pi 4 and have been running into problems with the make execution. For the world of me I cannot figure out what I am missing or doing wrong. What is the actual error that I am trying to resolve? My assumption is that there is a missing dependency.

I have a problem, I created an index with a multi-step contact form. The only problem is that when I load the page from mobile it opens directly on the contact form and does not normally open at the top. thank you all.

I hope I have correctly attached the code. If you need some other file or different code, let me know, thank you very much!