抓systrace的常用的四种方法

Systrace是分析性能问题的最基本的工具&＃xff0c;那么如何抓取systrace呢&＃xff1f;

1. 手机准备好你要进行抓取的界面 点击开始抓取&＃xff08;命令行的话就是开始执行命令&＃xff09;
2. 手机上开始操作 设定好的时间到了之后&＃xff0c;会将生成 Trace 文件&＃xff0c;
3. 使用 Chrome 将这个文件打开进行分析

下面介绍了四种使用工具抓取 Systrace 的方法&＃xff1a;

一、使用Eclipse/Android Studio/Device Monitor抓取

1. In Eclipse, open an Android application project.
2. Switch to the DDMS perspective, by selecting Window > Perspectives > DDMS.
3. In the Devices tab, select the device on which to run a trace. If no devices are listed, make sure your device is connected via USB cable and that debugging is enabled on the device.
4. Click the Systrace icon at the top of the Devices panel to configure tracing.
5. Set the tracing options and click OK to start the trace

1. In Android Studio, open an Android application project.
2. Open the Device Monitor by selecting Tools > Android > Monitor.
3. In the Devices tab, select the device on which to run a trace. If no devices are listed, make sure your device is connected via USB cable and that debugging is enabled on the device.
4. Click the Systrace icon at the top of the Devices panel to configure tracing.
5. Set the tracing options and click OK to start the trace.

1. Navigate to your SDK tools/ directory.
2. Run the monitor program.
3. In the Devices tab, select the device on which to run a trace. If no devices are listed, make sure your device is connected via USB cable and that debugging is enabled on the device.
4. Click the Systrace icon at the top of the Devices panel to configure tracing.
5. Set the tracing options and click OK to start the trace.

具体步骤见截图&＃xff1a;

二、 使用命令行工具

命令行形式比较灵活&＃xff0c;速度也比较快&＃xff0c;一次性配置好之后&＃xff0c;以后再使用的时候就会很快就出结果.

1. cd android-sdk/platform-tools/systrace
2. python systrace.py --time&＃61;5  -o  mysystrace.html   sched freq gfx input view  webview wm am dalvik idle power

参数解释&＃xff1a;

a.--time后面是你要抓的时间的长度&＃xff0c;--time&＃61;5表示抓的时间长为5s.

b.mysystrace.html是要生成的systrace文件的名称

c. sched以及后面的参数表示&＃xff0c;你要抓的systrace信息&＃xff0c;这个不同手机可能有不同&＃xff0c;你可以通过一下命令查看你手机支持的systrace Tag.

adb shell atrace --list

三、perfdump(这个是高通平台支持的一个工具)

1. am start -n com.qualcomm.qti.perfdump/.MainActivity :打开这个工具
2. systrace.py --from-file trace_output -o output.htm&＃xff1a;把生成的文件转换成systrace文件

用命令1打开工具后可以看到图一&＃xff08;从左到右数&＃xff09;&＃xff0c;在图一选择你要抓的信息&＃xff0c;然后保存&＃xff0c;在图二中选择开始&＃xff0c;当你发现卡顿就可以点击下载的那个图标&＃xff0c;就可以保存之前抓的systrace文件到你手机里面

四、抓离线systrace&＃xff08;高通平台&＃xff09;

1.使用手机连接上wifi

2.确保手机和PC网络可以互通&＃xff08;可以ping相互的ip地址&＃xff09;

3.确保手机usb调试打开&＃xff0c;使用usb连接手机&＃xff0c;然后执行命令&＃xff1a;adb tcpip 5555

4.断开usb连接

5.输入命令&＃xff1a;adb connect 手机ip地址&＃xff08;如 adb connect 192.168.1.111&＃xff09;

6.通过方法一到三中的一种方法来抓