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Questions tagged [systrace]

The systrace tool helps analyze the performance of an Android application.

The systrace tool helps analyze the performance of your application by capturing and displaying execution times of your applications processes and other Android system processes.

The tool combines data from the Android kernel such as the CPU scheduler, disk activity and application threads to generate an HTML report that shows an overall picture of an Android device’s system processes for a given period of time.

More info at the android developers help page.

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Lock contention on thread list lock

During profiling my Android application using Perfetto tool I've found many cases with thread locking with message "Lock contention on thread list lock (owner tid: ...)" Typical Perfetto screenshot: What is the cause of the lock? Which code calls…
papandreus
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Systrace: When I open the systrace, I found that the information of SurfaceFlinger is not full，I just see a few information shown

Android Version:10(Q) The error systrace: enter image description here The normal systrace enter image description here I have check the ftrace config in the code，the CONFIG_TRACING=y is already on my config I can see ATRACE_CALL() on function…
AndroidHuang
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How to select the time frame while navigating system trace in android profiling

I'm more interested in time frame where the traversal work is being done by the main thread, or in other words, I want to select any region in the thread section. Not able to select that region. Anyone knows about this?
Vikas Pandey
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Not able to use record_android_trace command for Perfetto from command line

I've been following Quickstart: Record traces on Android and also watching the demonstration and guide - Android app performance with Perfetto, after running the command record_android_trace I'm getting this error - Has anyone got this error?
Vikas Pandey
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How to record a trace with command line tool - record_android_trace for android

I need to trace system trace and view-analyse using Perfetto saw in this video Android app performance with Perfetto, record_android_trace where it is mentioned that the tool - Recording a trace with command line is downloaded and made into an…
Vikas Pandey
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Can't find Systrace option in Developer option - Debuging in Vivo Android 12 device

I've a Vivo Android 12, on which I want to take a systrace of my app. I just can't find the Systrace option as shown in the developer website - https://developer.android.com/topic/performance/tracing/on-device#set-up-tile Here is a screerecord of me…
Vikas Pandey
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How to see all events on systrace android profiler?

I think, Whoever has worked with the stack trace, can help me? I'm trying to analyze my systrace, to find the causes of frozen frame issues. I see this - https://developer.android.com/studio/profile/inspect-traces#events-table where all call for a…
Vikas Pandey
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How could I find slices' "cpu self time" and "self time" in perfetto UI results like the legacy UI for systrace do?

I'm using perfetto to trace my app. I am not using systrace because I need to trace for long duration. However in the perfetto result below, I can only find slices' "wall duration" not the "self duration" and "cpu self duration" which can be found…
Gerrard8
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CommandFailedError when running systrace on Android 6.0 device

I want to capture a system trace, using the systrace tool. I have this device (not-rooted) : Pixi 4.5 Alcatel Android 6.0 (API 23) And I use Android Studio 4.2.2 and I have installed Python 2.7.18, as required (the version 3+ does not match). Here…
S-DA92
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trace_pipe what are they/ is it file or some kind of channel that I can open and read and write to it | And what are Linux trace

So I have this code So I like to know what is this trace_fd = open(DEBUGFS "trace_pipe", O_RDONLY, 0); it seems like reading trace but what is trace so begin telling me something about trace, and can I read any trace/ how many traces are there. If I…
user786
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In Android performance analysis, cup performs a large number of tasks app_ process32_ x

nexus 5,android 6.0.1 lg devices My list is scrolling It is found that the frame is lost and the dequeuebuffer takes a long time sh dequeuebuffer cpu area： cpu area No app found_ process32_ x
dee13600
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I am doing performance investigation for an android application for its GPU using systrace. What does “GPU completion” thread in systrace means

I see that "GPU completion" thread goes into idle mode after a longer time when app is launched if there is tflite model initialisation at app launch. Does it state a higher usage of GPU in android device? Idle state means that GPU usage is not…
lks
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The powerprofile and systrace outputs are not consistent

I'm generating the PowerProflie file and the Systrace file to get the energy consumption of an Android Application, but I found that the number of cpu cores is different between the two files. I'm using this command line for Systrace: command =…
Sarah Fekih
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How to capture Android Systrace from my automation script

I am trying to capture Android systrace while running my automation tests. Since i dont know the duration of my tests so i cannot use param "-t" . I use below command for tracing - python systrace.py -a com.myapp -o testauto.html Manually to stop…
Rishi
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Custom events traces not showing in systrace

I am using this command to capture systrace from my pixel3 python systrace.py -a "com.my.sampleApp" -o trace.html I am able to see my Application's traces(UIThread, Render Thread ....) in the systrace captured but i am not able to see custom events…
Rishi
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