Android 开机加速优化

文章目录

• Android 开机加速优化
  • 关闭BootLoader的企鹅
  • 关闭开机动画Android
  • 关闭锁屏
  • 删除预装APP
    • 查看预装APP
    • 删除编译生成的APK
    • 不编译APK
      • 1. 统一配置
      • 2. 修改单个APK的Android.mk
    • 谷歌APP
    • 高通APP
  • 关闭系统服务
  • 修改LOG打印级别
  • 并发加载class和resource等资源
  • readahead机制预加载
  • 测试
    • 1. 关闭系统服务
    • 2. 显示
    • 3. 删除预装APP
    • 4. 其它

关闭BootLoader的企鹅

# kernel/msm-4.9/arch/arm64/configs/msm8953_defconfig
# kernel/msm-4.9/arch/arm64/configs/msm8953-perf_defconfig

CONFIG_FRAMEBUFFER_CONSOLE、CONFIG_LOGO
第一个编译选项表示内核支持帧缓冲区控制台，它对应的配置菜单项为：
Device Drivers —> Graphics support —> Console display driver support —> Framebuffer Console support。
第二个编译选项表示内核在启动的过程中，需要显示LOGO，它对应的配置菜单项为：
Device Drivers —> Graphics support —> Bootup logo。

内核源码：
/kernel/goldfish/drivers/video/
/kernel/goldfish/drivers/video/logo/

注意：默认没开启企鹅图标

关闭开机动画Android

# system/core/rootdir/init.rc
# cat frameworks/base/cmds/bootanimation/bootanim.rc

service bootanim /system/bin/bootanimation
    class core animation
    user graphics
    group graphics audio
    disabled
    oneshot
    writepid /dev/stune/top-app/tasks

关闭服务
# setprop service.bootanim.exit 0
# start bootanim
注意：没起作用，还是有明暗变化的Android logo

修改：
#  vi frameworks/base/cmds/bootanimation/bootanimation_main.cpp
直接注释main()方法的内容
不显示Android logo，但是没有看到明显的改善

关闭锁屏

# frameworks/base/packages/SettingsProvider/res/values/defaults.xml
<bool name="def_lockscreen_disabled">true</bool>

删除预装APP

查看预装APP

adb shell pm list packages > all.txt

package:com.android.cts.priv.ctsshim
package:com.qualcomm.qti.qms.service.telemetry
package:com.qualcomm.qti.perfdump
package:com.android.internal.display.cutout.emulation.corner
package:com.android.internal.display.cutout.emulation.double
package:com.android.providers.telephony
package:com.verizon.dmclientupdate
package:com.android.providers.calendar
package:com.android.providers.media
package:com.adups.dmc
package:com.qualcomm.qti.modemtestmode
package:com.android.wallpapercropper
package:com.quicinc.cne.CNEService
package:com.android.protips
package:com.android.documentsui
package:com.android.externalstorage
package:com.qualcomm.uimremoteclient
package:com.android.htmlviewer
package:com.qualcomm.qti.uceShimService
package:com.android.companiondevicemanager
package:com.android.mms.service
package:com.qualcomm.qti.qms.service.connectionsecurity
package:com.android.providers.downloads
package:com.qualcomm.qti.callenhancement
package:com.qualcomm.qti.telephonyservice
package:com.qualcomm.qti.auth.fidocryptoservice
package:com.qualcomm.qti.optinoverlay
package:com.android.soundrecorder
package:com.qualcomm.uimremoteserver
package:com.android.defcontainer
package:com.qti.confuridialer
package:com.android.providers.downloads.ui
package:com.android.pacprocessor
package:com.android.simappdialog
package:com.android.settings.overlay.cmcc
package:com.android.internal.display.cutout.emulation.tall
package:com.android.certinstaller
package:com.android.carrierconfig
package:com.android.mms.overlay.cmcc
package:com.qti.qualcomm.datastatusnotification
package:android
package:com.android.contacts
package:org.codeaurora.gallery
package:com.qualcomm.qti.callfeaturessetting
package:com.qualcomm.wfd.service
package:android.ui.overlay.ct
package:com.qti.qualcomm.deviceinfo
package:com.android.egg
package:com.android.mms
package:com.android.mtp
package:com.android.nfc
package:com.android.stk
package:com.android.launcher3
package:com.android.backupconfirm
package:com.qualcomm.qti.server.wigigapp
package:com.android.provision
package:org.codeaurora.ims
package:com.android.statementservice
package:com.android.settings.intelligence
package:com.android.systemui.theme.dark
package:com.qualcomm.qti.dynamicddsservice
package:com.qualcomm.qcrilmsgtunnel
package:com.android.providers.settings
package:com.android.sharedstoragebackup
package:com.android.dreams.basic
package:com.android.webview
package:com.android.se
package:com.android.inputdevices
package:com.android.bips
package:com.qti.dpmserviceapp
package:com.qti.xdivert
package:com.android.systemui.overlay.cmcc
package:com.android.musicfx
package:com.android.cellbroadcastreceiver
package:android.telephony.overlay.cmcc
package:android.ext.shared
package:com.android.onetimeinitializer
package:com.qualcomm.qti.simsettings
package:com.android.server.telecom
package:com.android.backup
package:com.android.keychain
package:com.qualcomm.qti.presenceappSub2
package:com.android.printservice.recommendation
package:com.android.dialer
package:android.ext.services
package:com.qualcomm.qti.qtisystemservice
package:com.android.calllogbackup
package:com.verizon.dmbrowser
package:com.android.packageinstaller
package:com.android.carrierdefaultapp
package:com.dsi.ant.server
package:com.qualcomm.qti.remoteSimlockAuth
package:com.android.proxyhandler
package:com.cyanogenmod.filemanager
package:com.android.inputmethod.latin
package:com.qualcomm.qti.ltedirect
package:com.android.managedprovisioning
package:com.android.dreams.phototable
package:com.qualcomm.qct.dlt
package:com.android.smspush
package:com.android.wallpaper.livepicker
package:com.example.connmgr
package:com.qualcomm.qti.presenceapp
package:com.android.apps.tag
package:com.android.storagemanager
package:com.android.bookmarkprovider
package:com.android.settings
package:com.qualcomm.qti.ims
package:com.qualcomm.qti.lpa
package:com.qualcomm.qti.sva
package:com.qualcomm.qti.uim
package:com.qualcomm.location
package:com.qualcomm.simcontacts
package:com.android.cts.ctsshim
package:com.android.systemui.overlay.ct
package:com.caf.fmradio
package:com.qti.diagservices
package:com.qualcomm.qti.services.secureui
package:com.android.vpndialogs
package:com.qualcomm.location.XT
package:com.android.music
package:com.android.phone
package:com.android.shell
package:com.android.wallpaperbackup
package:com.android.providers.blockednumber
package:org.codeaurora.snapcam
package:com.android.providers.userdictionary
package:com.android.emergency
package:com.android.location.fused
package:com.android.deskclock
package:com.android.systemui
package:com.android.exchange
package:com.android.bluetoothmidiservice
package:com.qualcomm.qti.confdialer
package:com.qualcomm.qti.poweroffalarm
package:com.qualcomm.qti.networksetting
package:com.android.traceur
package:com.qualcomm.qti.qms.service.trustzoneaccess
package:com.android.bluetooth
package:com.qualcomm.timeservice
package:com.qualcomm.atfwd
package:com.qualcomm.embms
package:com.android.providers.contacts
package:com.android.captiveportallogin
package:org.codeaurora.qti.nrNetworkSettingApp

删除编译生成的APK

# test
rm -rf out/target/product/msm8953_64/vendor/app/QSensorTest/QSensorTest.apk
rm -rf out/target/product/msm8953_64/system/app/EmbmsTestApp/EmbmsTestApp.apk
rm -rf out/target/product/msm8953_64/system/app/ModemTestMode/ModemTestMode.apk

# bluetooth
rm -rf out/target/product/msm8953_64/system/app/BluetoothExt/BluetoothExt.apk
rm -rf out/target/product/msm8953_64/system/priv-app/BATestApp/BATestApp.apk
rm -rf out/target/product/msm8953_64/system/app/BTTestApp/BTTestApp.apk
rm -rf out/target/product/msm8953_64/system/app/HidTestApp/HidTestApp.apk

# web
rm -rf out/target/product/msm8953_64/system/app/webview/webview.apk
rm -rf out/target/product/msm8953_64/system/app/HTMLViewer/HTMLViewer.apk

不编译APK

1. 统一配置

去除选项
# build/make/target/product/core.mk
# device/qcom/common/base.mk

2. 修改单个APK的Android.mk

把
LOCAL_MODULE_TAGS := debug # 在debug模式下编译，改成不是debug模式，就不会编译
改成
LOCAL_MODULE_TAGS := samples

# 跳过
LOCAL_OVERRIDES_PACKAGES := APP Name

谷歌APP

# 删除APK
Browser2         # 浏览器
Calendar         # 日历
Email            # 邮件
ExactCalculator  # 精确计算器
PrintSpooler     # 打印
QuickSearchBox   # 谷歌搜索

vi device/qcom/common/base.mk
vi build/make/target/product/core.mk

高通APP

# 查找APK
find out/target/product/msm8953_64/system/app/ -name  "QSensorTest.apk"

# 查找mk文件
find . -type f -name \*.mk | xargs grep TestApp -in
find . -type f -name \*.mk | xargs grep BATestApp -in
find . -type f -name \*.mk | xargs grep QSensorTest -in
find . -type f -name \*.mk | xargs grep EmbmsTestApp -in


# BluetoothExt.apk
cat vendor/qcom/opensource/commonsys/bluetooth/hidtestapp/Android.mk
cat vendor/qcom/opensource/commonsys/bluetooth/bttestapp/Android.mk
cat vendor/qcom/opensource/commonsys/bluetooth_ext/BATestApp/Android.mk

# cat vendor/qcom/proprietary/prebuilt_HY11/target/product/msm8953_64/Android.mk

vendor/qcom/proprietary/sensors/QSensorTest/Android.mk

# vi vendor/qcom/proprietary/common/config/device-vendor.mk
# vi vendor/qcom/proprietary/prebuilt_HY11/target/product/msm8953_64/prebuilt.mk
改成simples

关闭系统服务

# frameworks/base/services/java/com/android/server/SystemServer.java

关闭服务
VibratorService          震动器服务
ClipboardService         粘贴板服务
FingerprintService       指纹

其他服务：
PowerManagerService      电源管理服务
BatteryService           电池服务，当电量不足时发广播
AlarmManagerService      闹钟服务  
WallpaperManagerService  壁纸管理服务
StatusBarManagerService  状态栏管理服务
注意：电源服务无法关闭

修改LOG打印级别

并发加载class和resource等资源

# frameworks/base/core/java/com/android/internal/os/ZygoteInit.java

Thread t1 = new Thread(new Runnable() {
    @Override public void run()
    {
        long startTimeThread = SystemClock.uptimeMillis();

        bootTimingsTraceLog.traceBegin("PreloadResources");
        preloadResources();
        bootTimingsTraceLog.traceEnd(); // PreloadResources

        Log.i(TAG, "thread:" + (SystemClock.uptimeMillis() - startTimeThread) + "ms.");
    }
});

t1.start();

//wait Thread complete.
try
{
    t1.join();
}
catch (InterruptedException e)
{
    e.printStackTrace();
}

注意：

• 失败，不能创建线程，错误提示：java.lang.InternalError: Cannot create threads in zygote
• 这里总共耗时2.5s左右

readahead机制预加载

测试

1. 关闭系统服务

2. 显示

3. 删除预装APP

4. 其它