systrace

1.Android studio systrace a. 安装 b. 终端进入这个文件夹 c. 使用USB连接要测试的手机，并打开USB调试开关 d. systrace只支持 Python2 所以需要把Python版本切换到2.7版本 e. 运行下面这行代码 然后开始操作手机执行用例 f. 执行完成后 点击enter stop录制 g. 拷贝结果的路径 用Chrome打开 分析结果 需要重点关注的参数 Frames Alerts 快捷键 1.Android studio systrace a. 安装 在android studio中，Tools -> Android -> SDK Manager -> SDK Tools,点击Android SDK platform-Tools并安装，安装完成后，进入/platform-tools/systrace中，systrace脚本便位于这里。 b. 终端进入这个文件夹 c. 使用USB连接要测试的手机，并打开USB调试开关 d. systrace只支持 Python2 所以需要把Python版本切换到2.7版本 e. 运行下面这行代码 然后开始操作手机执行用例 python systrace.py -o mynewtrace.html sched freq idle am wm gfx view \ binder_driver hal

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Here's the error message D:\Programming\Tools\ADT_bundle\sdk\platform-tools\systrace>python systrace.py Traceback (most recent call last): File "systrace.py", line 315, in <module> main() File "systrace.py", line 64, in main os.execv(legacy_script, sys.argv) OSError: [Errno 2] No such file or directory I look into systrace.py, it seems that the legacy_script "systrace-legacy.py" is missing on the file system. I have read several related posts on stackoverflow, and I've already put directory containing adb in the %PATH%. The problem still

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I ran systrace on my android studio project in order to find some performance bugs but after the end of the tracing process, i get the following error and if i open the trace.html output file in chrome, the trace view is empty: Starting tracing (10 seconds) Tracing completed. Collecting output... Exception in thread Thread-13: Traceback (most recent call last): File "C:\Python27\lib\threading.py", line 801, in __bootstrap_inner self.run() File "C:\Python27\lib\threading.py", line 754, in run self.__target(*self.__args, **self.__kwargs) File

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am trying to run systrace on a non-rooted device. It always gives the following error if any of the trace events is selected: Unable to find trace start marker 'TRACE:': error opening /sys/kernel/debug/tracing/events/cpufreq_interactive/enable: No such file or directory If no trace event is selected, it works, but the trace is not very usweful. Does systrace requires root access? Note that I am running systrace directly from Eclipse (DDMS) on Windows-7. 回答1: According to systrace.py --help , the following traces require root

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Android systrace tool, calls atrace tool via ADB. However, I don't understand very well the format of the traces file. Apparently it is very similar to linux ftrace tool with some differences. The main difference is that is doesn't uses a System.Map file but it includes all that information into the trace file. Also, there are new B|E entries that are android specific. There is some information about this format in Android Source Code at: http://androidxref.com/4.1.1/xref/external/chromium-trace/src/tracing/linux_perf_importer.js However, in

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Android systrace tool, calls atrace tool via ADB. However, I don't understand very well the format of the traces file. Apparently it is very similar to linux ftrace tool with some differences. The main difference is that is doesn't uses a System.Map file but it includes all that information into the trace file. Also, there are new B|E entries that are android specific. There is some information about this format in Android Source Code at: http://androidxref.com/4.1.1/xref/external/chromium-trace/src/tracing/linux_perf_importer.js However, in

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: When I run python systrace.py --time=10 -o mynewtrace.html gfx The following error occurs Starting tracing (10 seconds) Tracing completed. Collecting output... <br> Exception in thread Thread-11: Traceback (most recent call last): File "C:\Python27\lib\threading.py", line 801, in __bootstrap_inner self.run()<br> File "C:\Python27\lib\threading.py", line 754, in run self.__target(*self.__args, self.__kwargs)<br> File "C:\Users\rajnish.r\AppData\Local\Android\Sdk\platform-tools\systrace\cat apult\systrace\systrace\tracing_agents\atrace_agent

Android App 反应卡顿，从技术上将就是UI 渲染慢。 UI渲染 是从您的应用程序生成一个框架并将其显示在屏幕上的行为。 为了确保用户与您的应用程序的交互顺利，您的应用程序应该在 16ms 内渲染帧数达到 每秒60帧（为什么60fps？） 。 如果您的应用程序因UI渲染速度缓慢而受到影响，那么系统将被迫跳过帧，用户将感觉到您的应用程序中出现卡顿。 我们把这个叫做 jank 。 本篇文章主要介绍 Android 开发中的部分知识点，通过阅读本篇文章，您将收获以下内容: 1.UI 渲染简介 2.识别Jank 3.Fix Jank 4.引起Jank 通用问题举例 欢迎关注微信公众号:程序员Android 公众号ID：ProgramAndroid 获取更多信息 微信公众号：ProgramAndroid 我们不是牛逼的程序员，我们只是程序开发中的垫脚石。 我们不发送红包，我们只是红包的搬运工。 1.UI 渲染简介 为了帮助您提高应用程序质量， Android 会自动监视您的应用程序是否有空，并在 Android 生命危险仪表板中显示信息。 有关如何收集数据的信息，请参阅 Play Console 文档。 如果您的应用程序出现问题，本页提供诊断和解决问题的指导。 Android 生命危险仪表板和 Android 系统会跟踪使用 UI Toolkit 的应用程序的渲染时间统计信息

I'm currently developing an Android app and trying to improve the start time. In order to do so, I'm using the Systrace tool. The first time I run the app (right after installed), it takes ~40 seconds to start, and I get this trace: As you can see, there is a 30 seconds light purple tag with title bindApplication . After this, I close the app (swiped away from recent activities) and reopen it. This time the bindApplication tag is just 4 seconds long: Does anybody know if it's normal for the first run to take so long ? What can I do to improve it ? My guess here is that bindApplication is

When I run python systrace.py --time=10 -o mynewtrace.html gfx The following error occurs Starting tracing (10 seconds) Tracing completed. Collecting output... <br> Exception in thread Thread-11: Traceback (most recent call last): File "C:\Python27\lib\threading.py", line 801, in __bootstrap_inner self.run()<br> File "C:\Python27\lib\threading.py", line 754, in run self.__target(*self.__args, self.__kwargs)<br> File "C:\Users\rajnish.r\AppData\Local\Android\Sdk\platform-tools\systrace\cat apult\systrace\systrace\tracing_agents\atrace_agent.py", line 194, in _collect_a nd_preprocess self._trace