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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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Double buffering slows frame rendering | systrace analysis

Im working at a simple 2D Game with Custom View canvas drawing (postInvalidate()) and HardwareAcceleration. After weeks of performance analysis i decided to sync my update and drawing operations with the VSYNC pulse over the Interface…
methusa
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Systrace shows performTraversals and getDisplayList take a long time

I have a gridView with 20 custom components shown on screen at a time (as the grid view items). Scrolling the view is very choppy, and I'm trying to determine why. My systrace (shown below) shows a huge amount of time spent in performTraversals…
rsteckler
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Cpu clock Frequence can be 0?

I am tracing my Android system in sleep mode (screen off) by using Systrace in Ddms. In systrace's graph, i saw sometime CPU frequency is 0. So, I want to ask, Can CPU frequency is 0?
Toan Tran Van
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OSError: [Errno 2] No such file or directory when running systrace.py

I'm currently trying to run the systrace python script that is included in the platform-tools folder and I'm getting the following error: File "systrace.py", line 274, in main() File "systrace.py", line 60, in main device_sdk_version =…
Kunashu
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override mkdir with LD_PRELOAD

I'm trying to modify the syscall mkdir(), to filter some users who i don't want them to create directories, maybe this is not the most elegant way to do it, but i want to know why it's not working. The mkdir() replacement code is: #define…
acvF
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Running Android systrace on device

I'm unable to run the Android SDK tool called systrace.pl because I get errors like: error opening /sys/kernel/debug/tracing/options/overwrite: No such file or directory And indeed the /sys/kernel/debug/tracing directory doesn't even exist. A…
saimonjingai
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Android: systrace in cygwin does not write to output file, plus generates garbage

I'm getting below error with systrace tool provided by android Jelly bean SDK on windows 2003 PC with python 2.7 executing below command in cygwin editor python systrace.py --time=10 -o mynewtrace.html ▒GS{▒&▒izAr…
user1891164
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Adding a custom systrace with React Native

According to the React Native documentation https://reactnative.dev/docs/systrace there is support for Systrace. However when adding a trace to my project I do not see the added event in the recorded trace. Following the example posted in…
Nazgul
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Whats this bindApplication method in Android running on main tread?

I'm using systrace to find and solve my frozen frame issues. and I see this methood, It seem like it called by android framework while initialising.
Vikas Pandey
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Is it required/recommended to remove Trace.beginSection endSection API from release variant?

I just found that using Trace.beginSection can help troubleshoot performance issues while using systrace tool. The documentation states "This tracing mechanism is independent of the method tracing mechanism offered by Debug#startMethodTracing" But…
Amit
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systrace only records subset of time requested

for example when I record a systrace using the following command line: python systrace.py -o mytrace.html -a my.app.package.name -t 45 instead of showing data for the entire 45 seconds it only shows 5.6 seconds. I have a similar issue when i trigger…
Thalatta
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Systrace of android sdk does not support multiple devices?

When I use -e option to sepecify a device, errer happen. raise device_errors.MultipleDevicesError(devices) devil.android.device_errors.MultipleDevicesError: More than one device available. Use -d/--device to select a device by serial.
Victor Choy
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Running android systrace inside application

I am trying to develop an app that allows the user to record system traces using systrace, i want to be able to run this inside a regular Android application, without the need of a PC or ROOT access to use the ADB. From Android 9, there is an option…
axebau24
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Modifying Android systrace for capturing CPU Frequency even where is no change

I am currently running systrace with the category "freq" to capture cpu frequency with my device and I noticed that it only outputs something during a change in the freq. So if there was no change during the capture, the html output that systrace…
rominoushana
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Android systrace not showing my app's custom sections

Trying to profile lags when scrolling in RecyclerView using systrace: python systrace.py -o ~/tmp/newtrace.html -app= But there is no entry for custom trace sections. I'm tracing using following code override fun…
Konstantin Berkov
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