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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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Lollipop inconsistent CPU usage on Galaxy S4

I'm developing a game for Android and am primarily testing it on the Samsung Galaxy S4. However, I'm finding that since I've installed Lollipop (5.0.1) on it that my game is now occasionally freezing for approx. 200ms every so often, causing it to…
user2170842
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How do I prevent task/process name from being trimmed in Systrace or atrace kernel log output?

How do I ensure the task name/process name in kernel log outputs from Systrace/atrace don't get trimmed or cut off? I want to see the whole name of the task/process name without it get shortened. Below is an example of Systrace output without the…
Zythyr
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Analyzing latency from systrace tool

Below attached image of systrace analysis of application (dialer) of mobile phone. Is it possible to measure latency of dialer or any other apps from this tool. i.e. I want to measure time taken by device to execute and completely opening of…
Gaurang Rokad
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Read trace file from android APP

I am trying to read content of /sys/kernel/debug/tracing/trace file from my code but i am unable to do so.I have tried mounting using mount -o rw,remount -t debugfs nodev /sys/kernel/debug and have also done chmod -R 777 /sys/kernel/debug …
Anonymous
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Android systrace/atrace is missing events, impossible states in traces

I'm currently using atrace on Android to record and analyze the state of the OS during a video workload. Specifically, I'm monitoring the system's BufferQueue sizes throughout the execution. atrace logs the sizes of these buffers as they are…
Shookit
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systrace output html only has cpu row

following picture is my systrace output, there is only one row. Comparing the html with some sample file, it seems in my file, there is no lines like SurfaceFlinger-220 [001] 227112.684875: 0: B|129|onMessageReceived\n\ SurfaceFlinger-220 …
bright
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On Android, is there anyway to route logcat API output into systrace?

I am using the Android systrace to study the dynamic behavior of the ExoPlayer opensource app. I am writing up the study notes as a PPT here! Anyway, I love to see a way to automatically add LogCat API's log msg as event to the systrace, that way,…
tony-p-lee
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where's the SurfaceFlinger process in systrace resulting html file?

according to the documentation, there should be a SurfaceFlinger process in the graph so I can use it to find the cause of missing frames. I used to see it, but now a bunch of package names become ..., see below. So how could I address my…
suitianshi
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Where is atrace.c located?

I am trying to write a script to get frame rate data using systrace. I know that systrace calls atrace. But I can't find out where atrace.c is located. Is it within the sdk or within the kernel? Either way it does not exist in msm kernel or the…
Isuru Daulagala
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What does "SurfaceView" represent in systrace result?

When investigating an game play stuttering issue, I found that bewteen eglSwapBuffer() from the game and postFramebuffer() in surfaceflinger, there is always a delay in "SurfaceView" lasts from 0.5ms to 10ms which seems pretty random and irrelevant…
xiay
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Can't run systrace as root

I'm trying to get systrace to provide disk output. I've rooted my device and I'm able to switch to superuser in adb shell just fine. python systrace.py -d -o ~/systrace1.html produces 'error: tracing disk activity requires root privileges' If I…
joates
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Can I use performTraversals to measure FPS on Android?

I'd like to calculate FPS to detect performance issue of an application based on existing Android profiling tool . I noted that on Systrace, it can record the length of performTraversals. As far as I know, performTraversals performs measure, layout…
Wei Yang
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systrace export as log formats like csv or text file instead of html

can we export systrace output as CSV file, so that i can parse and generate report.
Lava Sangeetham
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How to increase Android FTrace precision to microseconds?

I'm trying to generate FTrace files inside an Android environment, using: root@adroid:# echo 1 > /sys/kernel/debug/tracing/events/sched/sched_switch/enable root@adroid:# echo 1 > /sys/kernel/debug/tracing/tracing_on root@adroid:# cat…
Rodmar Conde
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UnityMain not showing in Systrace

I ran a Systrace and opened 2 Unity apps. I configured atrace to use these 2 categories: "am", and "view". However, when I go to view it in the trace viewer I see the Unity apps but I don't see UnityMain. I tried using 2 additional categories:…
FestiveHydra235
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