Hi, We are working on Android boot time reduction.
We use OMAP3430 Board as our Hardware. Android version is 1.6 Donut.
We used bootchart to visualize boot pattern. From it, we found that
following things take bulk of time.
1.Zygote process. It actually do the proloading of java classes that
takes @23 secs for its completion.
2. Package manager service.
In logcat output, we can see that Package manager scans 4 dirs,
/system/app,
/system/framework,
/data/app,
/data/app-private.
And it takes nearly 11-12 sec to scan packages as shown below from
logcat output.
I/PackageManager( 827): Got library android.test.runner in /system/
framework/android.test.runner.jar
I/PackageManager( 827): Got library com.android.im.plugin in /system/
framework/com.android.im.plugin.jar
W/PackageManager( 827): Running ENG build: no pre-dexopt!
D/dalvikvm( 827): GC freed 6111 objects / 272568 bytes in 72ms
D/PackageManager( 827): Scanning app dir /system/framework
V/PackageParser( 827): android:backupAgent =
com.android.internal.backup.SystemBackupAgent from android
+com.android.internal.backup.SystemBackupAgent
D/PackageManager( 827): Scanning app dir /system/app
V/PackageParser( 827): android:backupAgent =
com.android.providers.settings.SettingsBackupAgent from
com.android.providers.settings+SettingsBackupAgent
D/dalvikvm( 827): GC freed 3717 objects / 212000 bytes in 67ms
V/PackageParser( 827): android:backupAgent =
com.android.inputmethod.latin.LatinIMEBackupAgent from
com.android.inputmethod.latin+LatinIMEBackupAgent
E/PackageManager( 827): Package com.svox.pico has mismatched uid:
10014 on disk, 10015 in settings; read messages:
E/PackageManager( 827): Read completed successfully: 35 packages, 5
shared uids
E/PackageManager( 827): Package android.tts has mismatched uid: 10015
on disk, 10016 in settings
I/PackageManager( 827): /system/app/SubscribedFeedsProvider.apk
changed; collecting certs
E/PackageManager( 827): Package com.android.providers.subscribedfeeds
requires unavailable shared library com.google.android.gtalkservice;
ignoring!
W/PackageParser( 827): Intent filter for activity
ActivityIntentInfo{439d7c88 com.android.camera.ReviewImage} defines no
actions
D/PackageManager( 827): Scanning app dir /data/app
D/dalvikvm( 827): GC freed 5647 objects / 350752 bytes in 73ms
I/PackageParser( 827): Impliciting adding
android.permission.WRITE_EXTERNAL_STORAGE to old pkg
com.avaw.luklukpro
I/PackageParser( 827): Impliciting adding
android.permission.WRITE_EXTERNAL_STORAGE to old pkg org.iii.ro.iiivpa
I/PackageParser( 827): Impliciting adding
android.permission.READ_PHONE_STATE to old pkg org.iii.ro.iiivpa
E/PackageManager( 827): Package org.iii.ro.iiivpa has mismatched uid:
10016 on disk, 10014 in settings
D/PackageManager( 827): Scanning app dir /data/app-private
I/PackageManager( 827): Time to scan packages: 11.632 seconds
My question is
1. How can we reduce this scan time?
2. Is there any other way/approach to reduce android boot time? I
don't want to reduce android kernel boot time, it is short anyway.
If this is not the right forum to ask this , please redirect me to
correct place.
Thanks in Advance.
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