Which can reduce noise in your measurements and prevent measurement inaccuracy. When possible, consider using a testing framework like
This isn't recommended for user-experience focused tests (such asĪpp launch, DoU testing, and jank testing), but can be essential for cutting Disable little cores configure the GPU.Among other things, these scripts do the following: Significant variations in performance, even across the same device type.įor micro benchmarks. RunĪ/B comparisons across the same device and same OS version. Note that Macrobenchmark allows you to directly specify compilationįor low-level and high fidelity measurements, calibrate your devices. The profiles are located here: /data/misc/profiles/ref//primary.prof Profiles consistently and correctly, so if you decide to use them, confirm theyĪre collecting what you expect. 'speed-profile' mode will compile the app according to a profile of the utilizedĬode paths that is collected during app usage. The 'speed' compilation mode will compile the app completely the To do this is: adb shell cmd package compile -m speed -f
Macro point layouteditor apk#
Will hit it often if you are reinstalling the APK between test runs. Your application on-device to a known state (generally speed or speed-profile).īackground JIT activity can have a significant performance overhead, and you Remove tracepoints, so consider removing those rules for the configuration Have a substantial impact on performance. Depending on the resources your application uses, this can In their manifest to enable profiling in release builds.Ĭonfiguration. Devices runningĪndroid 10 (API Level 29) and higher can use
APK considerationsĭebug variants can be helpful for troubleshooting and symbolizing stack samples,īut they have severe non-linear impacts on performance. You should aim for these two startup goals in your apps:Ĭold start 0.1ms) can give significant insights into bottlenecks. Startup latency is the amount of time it takes between tapping on theĪpp icon, notification, or other entry point and the user's data being.Time, enable an overlay using Developer Options > Show refresh To see what refresh rate a device is using at a given.Interactions like scrolling, and some devices support even higher rates, Traditional rendering rates haveīeen 60Hz, but many newer devices operate in 90Hz mode during user Apps should target 90Hz refresh rates.More frames as the app takes longer to render content than the duration Is most apparent when scrolling, when what should be a smoothly animatedįlow has hiccups, where the movement pauses along the way for one or The system is not able to build and provide frames in time for them toīe drawn to the screen at the requested cadence (60hz, or higher). "Jank" is the term used to describe the visual hiccup that occurs when.Here are some of the common situations to look out for in your app:
There are many problems that can contribute to bad performance in an app, but This topic helps you to identify and fix key performance issues in your app.
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