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atrace -a com.jeoe.ebox gfx wm am sched view app res ss

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atrace -a com.jeoe.ebox gfx wm am sched view app res ss -o /sdcard/a.trace

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python systrace.py --from-file ~/a.trace -o ~/a.htm

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usage: atrace [options] [categories...]

options include:

-a appname      enable app-level tracing for a comma separated list of cmdlines

-b N            use a trace buffer size of N KB

-c              trace into a circular buffer

-f filename     use the categories written in a file as space-separated

values in a line

-k fname,...    trace the listed kernel functions

-n              ignore signals

-s N            sleep for N seconds before tracing [default 0]

-t N            trace for N seconds [default 5]

-z              compress the trace dump

--async_start   start circular trace and return immediately

--async_dump    dump the current contents of circular trace buffer

--async_stop    stop tracing and dump the current contents of circular

trace buffer

--stream        stream trace to stdout as it enters the trace buffer

Note: this can take significant CPU time, and is best

used for measuring things that are not affected by

CPU performance, like pagecache usage.

--list_categories

list the available tracing categories

-o filename      write the trace to the specified file instead

of stdout.

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atrace --list_categories

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gfx - Graphics

input - Input

view - View System

webview - WebView

wm - Window Manager

am - Activity Manager

sm - Sync Manager

audio - Audio

video - Video

camera - Camera

hal - Hardware Modules

app - Application

res - Resource Loading

dalvik - Dalvik VM

rs - RenderScript

bionic - Bionic C Library

power - Power Management

pm - Package Manager

ss - System Server

database - Database

network - Network

adb - ADB

pdx - PDX services

sched - CPU Scheduling

irq - IRQ Events

i2c - I2C Events

freq - CPU Frequency

idle - CPU Idle

disk - Disk I/O

mmc - eMMC commands

workq - Kernel Workqueues

regulators - Voltage and Current Regulators

binder_driver - Binder Kernel driver

binder_lock - Binder global lock trace

pagecache - Page cache

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import android.content.Intent

import android.os.Build

import androidx.appcompat.app.AppCompatActivity

import android.os.Bundle

import android.os.Trace

class MainActivity : AppCompatActivity() {

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContentView(R.layout.activity_main)

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {

Trace.beginSection("aaabbbcccddd")

};

　　　　　//*************您的代码

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {

Trace.endSection();

};

}

}