Owners of budget smartphones like the Xiaomi Redmi 9A often face the need to diagnose the system in depth when there are lags, graphic artifacts or interface performance problems. Winscope Tracking is a powerful tool built into the Android operating system that allows you to analyze in detail the work of the window manager and the SurfaceFlinger graphics subsystem. For developers and advanced users, this is the key to understanding how the processor and GPU handle frame rendering.
Unlike standard logs that only record system events, Winscope focuses on visuals: animations, transitions between applications, and layer rendering. On devices with a MIUI shell installed on the Redmi 9A, this tool can be hidden or require activation through special commands, as the manufacturer seeks to simplify the user experience by hiding complex engineering menus.
Using this diagnostic method requires caution, since interfering with system debugging processes can lead to temporary instability of the interface. However, if your goal is to identify the cause of the brakes or understand what process is loading the graphics chip, then studying Winscope logs will be an indispensable step in troubleshooting.
What is Winscope and why is it necessary for Redmi 9A?
Winscope is a tracer tool that collects data about how Android manages app windows and how they are displayed on the screen. In the context of the Xiaomi Redmi 9A, which runs on the MediaTek Helio G25 processor, understanding the graphics subsystem is critical. The device is in the initial segment, and resources are limited, so any extra frame or unoptimized animation can significantly affect the smoothness of the work.
The main purpose of this tool is to capture events related to SurfaceFlinger and WindowManager. When you fold an application, open a notification curtain or scroll through the tape, the system generates many events. Winscope writes them into a log file that can then be analyzed, which allows you to see how long it took to draw a particular frame and whether there were delays on the part of the system.
⚠️ Attention: Activating advanced debugging features, including tracing, can increase the CPU load and lead to faster battery discharge during diagnosis.
For the average Redmi 9A user, knowing that Winscope exists is useful because it gives access to hidden animation and rendering settings that sometimes refresh the experience of the interface. While this won’t directly speed up the hardware, optimizing software settings based on the data obtained can improve responsiveness.
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Use tracer only when problems occur, so as not to overflow the device memory with logs and not reduce the overall performance of the system.
Activation of the developer mode and debugging via USB
Before running any tracing on the Xiaomi Redmi 9A, you need to access hidden system functions. The standard MIUI interface hides these capabilities from the eyes of the average user. The first step is to activate the developer mode, which opens access to ADB (Android Debug Bridge) and other engineering tools.
The activation process is standard for all Android devices, but the MIUI shell has its own features. You need to go to the Settings → About Phone menu and find the MIUI version. You need to quickly click on this item 7-10 times in a row until you notice that you have become a developer, and then a new section will appear in the additional settings menu.
Inside the developer section, you need to find and activate the USB Debugging Switch. Without this option, the computer will not be able to send a command to start the tracing. It is also recommended to enable the option “Debug over USB (security settings)” if available, although on Redmi 9A with certain versions of Android it may be called differently or not.
☑️ Redmi Preparation 9A debug
It’s important to understand that enabling these features makes a device more vulnerable to outside interference if it’s connected to an untrusted computer.Always check for permission requests that appear on your smartphone screen when you connect to a PC.
Methods of running Winscope tracer
Winscope on Xiaomi Redmi 9A is not run through a regular app on the menu, as it happens with screenshots or voice recorder. It is a console utility that requires interaction through ADB or specialized terminal applications installed directly on the smartphone. There are several ways to obtain the necessary logs.
The first and most reliable way is to use a computer and command line, and you'll need to install ADB drivers on your PC and connect your phone with a cable, and the command to run the trace record is as follows:
adb shell cmd appops set --uid com.android.shell RUN_IN_BACKGROUND allowHowever, for direct capture of graphical events, the dumpsys command or specialized scripts running the SurfaceTracer service are used. On newer versions of Android, which can be available on Redmi 9A after updates, the command can look like this:
adb shell am start-activity --ez debug_layers true com.android.wm.shell.debug/.DebugActivityThe second way is to use terminal applications like Termux right on your phone, which allows you to do diagnostics without being tied to your computer, which is convenient in the field, but Termux also requires root rights or the special Wireless Debugging setup available on Android 11 and higher.
Note that some versions of MIUI may restrict access to trace commands software, in which case standard commands may not give results or require additional permissions through appops.
Analysis of the obtained logs and performance metrics
Once the tracing is running and played back a script with a problem (such as a lag when opening a camera), you need to save and analyze the data. Winscope logs are complex text or binary files containing time tags and event codes. For Redmi 9A, the key metrics will be FPS (frames per second) and rendering time.
When analyzing, pay attention to moments when frame time is greater than 16.6 ms (for 60 Hz) or 33.3 ms (for 30 Hz), exceeding these values indicates a frame gap, which is visually perceived as a delay. In logs, this is often marked with JANK or SLOW flags.
| Parameter | Normal value. | Critical significance | Description |
|---|---|---|---|
| Frame Time | < 16 ms | > 50 ms | Time to draw one frame |
| Input Latency | < 50 ms | > 200 ms | The delay between touch and reaction |
| GPU Usage | < 70% | 90-100% | Downloading the graphics processor |
| Buffer Queue | 1-2 | > 3 | Frame buffer queue |
Data interpretation requires careful attention, for example, a high load of the GPU on the Redmi 9A with a simple interface may indicate a bloated launcher or heavy live wallpaper. If the problem is only seen in games, then the analysis shifts towards optimizing the specific application.
Secret codes for diagnosis
Typical GUI problems on MIUI
The MIUI shell installed on the Xiaomi Redmi 9A is known for its functionality but also for its tendency to overload the interface.This often leads to situations where Winscope tracing reveals an excessive number of rendering layers. The system tries to render shadows, blurs and animations that the budget MediaTek processor does not always have time to process in real time.
One of the common problems is the "leakage" of window resources, when a closed application continues to take up space in the memory of the graphic buffer. In logs, this manifests as a growing number of active layers of SurfaceFlinger for no apparent reason. Rebooting the device usually resets this counter, but finding the culprit in the logs helps to identify the specific infringing application.
⚠️ Note: If you see persistent errors in the logs associated with hwc (Hardware Composer), this may indicate a conflict between the display drivers and the current firmware version.
Also worth mentioning is the problem of desynchronizing touchscreen and image. Winscope helps you determine where the delay occurs: during the process of touching the system or during the rendering of the response by the interface, this knowledge allows you to choose the right optimization strategy – to turn off unnecessary services or reduce the frequency of the sensor survey (if such an option is available).
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The main reason for the lags on Redmi 9A in Winscope logs is the overload of frame queues due to heavy MIUI animations, not a lack of RAM.
Optimization of the system based on trace data
Once you know what's slowing down, you can start optimizing. For Xiaomi Redmi 9A, the most effective method is to reduce the load on the GUI. In the developer menu, find the section related to drawing and rescale the animation. Setting 0.5x instead of the standard 1x will visually speed up the interface.
If the tracing showed that a particular application creates an excess load, try turning off hardware acceleration for it (if such an option is available in the settings of the application itself) or prohibit background activity. In the Settings menu → Applications → Application Management, you can limit background activity for heavy services.
Sometimes it helps to disable MIUI Optimization from the developer menu.This puts the system in a mode closer to the stock Android, which often positively affects the SurfaceFlinger. However, keep in mind that after that, some MIUI features, such as themes or double tapping to turn on the screen, may stop working correctly.
⚠️ Attention: Disabling optimization MIUI Before doing this, make sure to create a full backup of the data, as returning to the original state may require resetting to the factory settings.
Regularly cleaning the graphics cache can also help. While Android does this automatically, in some cases manually resetting through the Recovery Mode menu gives you performance gains by eliminating accumulated graphics debris.