Thanks for your reply.
Is it possible that faster CPUs do not have the timeout issue,
so they might not encounter a problem like this? 

Glenn Kasten於 2012年3月25日星期日UTC+8下午11時05分50秒寫道:
>
> My recollection is that, at least for the component I'm familiar with 
> (audio/media), Android didn't become SMP safe until 3.0 and later 
> versions. But that's just for media ... the problem you're seeing is 
> before mediaserver process starts up, and I'm not familiar with  early 
> system bootup. AFAIK, SMP safety is not really about CPU speed, it's 
> primarily about having the memory barriers at the right places. 
>
> On Mar 24, 8:12 am, Yan-Pai Chen <[email protected]> wrote: 
> > Hi all, 
> > 
> > I am working with a dual-core processor (ARM) which is running at very 
> low 
> > speed (33MHz). 
> > The boot process stuck at "ANDROID" animation sometimes. 
> > It looks like that if Launcher failed to attach, the boot process just 
> > stuck (please see the message below). 
> > But sometimes the Launcher may restart again and the boot process is 
> then 
> > finished. 
> > 
> > 1) Is this a possible path (to be stuck) in the design of Android 2.3.x 
> SMP 
> > ? 
> > 2) How can I ensure the restart of Launcher always happen when it is 
> failed 
> > to attach? 
> > 
> > By the way, I have tried to workaround this by increasing the 
> > PROC_START_TIMEOUT to 20 seconds. 
> > It seems to work because Launcher has enough time to attach. 
> > 
> > 3) So is my processor really too slow to run Android SMP? 
> > 
> > Any suggestion is welcome... :) 
> > 
> > I/ActivityManager(  101): System now ready 
> > I/ActivityManager(  101): Config changed: { scale=1.0 imsi=0/0 loc=en_US 
> > touch=3 keys=1/1/2 nav=1/1 orien=2 layout=268435491 uiMode=0 seq=1} 
> > I/SystemServer(  101): Making services ready 
> > I/StatusBarManagerService(  101): Starting service: 
> > 
> ComponentInfo{com.android.systemui/com.android.systemui.statusbar.StatusBar 
> Service} 
> > I/Zygote  (  101): Process: zygote socket opened 
> > I/ActivityManager(  101): Start proc com.android.systemui for service 
> > com.android.systemui/.statusbar.StatusBarService: pid=159 uid=1000 
> > gids={3002, 3001, 3003} 
> > I/ActivityManager(  101): Config changed: { scale=1.0 imsi=0/0 loc=en_US 
> > touch=3 keys=1/1/2 nav=1/1 orien=2 layout=268435491 uiMode=17 seq=2} 
> > W/RecognitionManagerService(  101): no available voice recognition 
> services 
> > found 
> > D/dalvikvm(  101): GC_EXTERNAL_ALLOC freed 127K, 40% free 3938K/6535K, 
> > external 1035K/1038K, paused 2074ms 
> > W/ActivityManager(  101): Process ProcessRecord{407475b8 
> > 159:com.android.systemui/1000} failed to attach 
> > W/ActivityManager(  101): Forcing bringing down service: 
> > ServiceRecord{40746fe8 com.android.systemui/.statusbar.StatusBarService} 
> > I/Process (  101): Sending signal. PID: 159 SIG: 9 
> > I/Process (  101): Sending signal. PID: 159 SIG: 9 
> > W/ActivityManager(  101): No pending application record for pid 159 
> > (IApplicationThread android.app.ApplicationThreadProxy@4074e360); 
> dropping 
> > process 
> > W/ActivityManager(  101): Timeout of broadcast BroadcastRecord{40762668 
> > android.intent.action.TIME_TICK} - 
> > 
> receiver=android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@406c60c8, 
> > started 10010ms ago 
> > W/ActivityManager(  101): Receiver during timeout: 
> BroadcastFilter{406d8600 
> > ReceiverList{406becf0 101 system/1000 local:406c60c8}} 
> > I/ActivityManager(  101): Start proc com.android.inputmethod.latin for 
> > service com.android.inputmethod.latin/.LatinIME: pid=170 uid=10012 
> gids={} 
> > D/NetworkManagmentService(  101): Registering observer 
> > E/ThrottleService(  101): Could not open GPS configuration file 
> > /etc/gps.conf 
> > I/ActivityManager(  101): Start proc com.android.phone for added 
> > application com.android.phone: pid=173 uid=1001 gids={3002, 3001, 3003, 
> > 1015} 
> > I/ActivityManager(  101): Start proc com.android.systemui for added 
> > application com.android.systemui: pid=174 uid=1000 gids={3002, 3001, 
> 3003} 
> > I/ActivityManager(  101): Starting: Intent { 
> act=android.intent.action.MAIN 
> > cat=[android.intent.category.HOME] flg=0x10000000 
> > cmp=com.android.launcher/com.android.launcher2.Launcher } from pid 0 
> > I/ActivityManager(  101): Start proc com.android.launcher for activity 
> > com.android.launcher/com.android.launcher2.Launcher: pid=177 uid=10018 
> > gids={} 
> > I/SystemServer(  101): Enabled StrictMode for system server main thread. 
> > W/ActivityManager(  101): Timeout of broadcast BroadcastRecord{40762668 
> > android.intent.action.TIME_TICK} - 
> > 
> receiver=android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@40706ce8, 
> > started 10025ms ago 
> > W/ActivityManager(  101): Receiver during timeout: 
> BroadcastFilter{4072b8d8 
> > ReceiverList{4072b860 101 system/1000 local:40706ce8}} 
> > W/ActivityManager(  101): Unable to start service Intent { act=@0 }: not 
> > found 
> > W/ActivityManager(  101): Process ProcessRecord{4061b3d8 
> > 170:com.android.inputmethod.latin/10012} failed to attach 
> > W/ActivityManager(  101): Forcing bringing down service: 
> > ServiceRecord{4074e958 com.android.inputmethod.latin/.LatinIME} 
> > I/Process (  101): Sending signal. PID: 170 SIG: 9 
> > W/ActivityManager(  101): Process ProcessRecord{407458a8 
> > 173:com.android.phone/1001} failed to attach 
> > I/Process (  101): Sending signal. PID: 173 SIG: 9 
> > W/ActivityManager(  101): Process ProcessRecord{4075c938 
> > 174:com.android.systemui/1000} failed to attach 
> > I/Process (  101): Sending signal. PID: 174 SIG: 9 
> > W/ActivityManager(  101): Unable to start service Intent { act=@0 }: not 
> > found 
> > W/ActivityManager(  101): finishReceiver called but no pending 
> broadcasts 
> > W/ActivityManager(  101): finishReceiver called but no pending 
> broadcasts 
> > W/ActivityManager(  101): Process ProcessRecord{40732d18 
> > 177:com.android.launcher/10018} failed to attach 
> > I/Process (  101): Sending signal. PID: 177 SIG: 9 
> > I//system/bin/tc(   75): Cannot find device "rmnet0" 
> > I/logwrapper(   75): /system/bin/tc terminated by exit(1) 
> > W/ProcessStats(  101): Skipping unknown process pid 184 
> > W/ProcessStats(  101): Skipping unknown process pid 188 
> > W/ProcessStats(  101): Skipping unknown process pid 189 
> > I//system/bin/tc(   75): Cannot find device "rmnet0" 
> > I/logwrapper(   75): /system/bin/tc terminated by exit(1) 
> > D/dalvikvm(  101): GC_CONCURRENT freed 254K, 40% free 4085K/6791K, 
> external 
> > 1324K/1567K, paused 923ms+289ms 
> > D/dalvikvm(  101): GC_EXTERNAL_ALLOC freed 36K, 41% free 4048K/6791K, 
> > external 1324K/1567K, paused 2573ms 
> > I//system/bin/tc(   75): Cannot find device "ifb0" 
> > I/logwrapper(   75): /system/bin/tc terminated by exit(1) 
> > D/dalvikvm(  101): GC_EXTERNAL_ALLOC freed 81K, 39% free 4197K/6791K, 
> > external 2465K/3078K, paused 1772ms 
> > D/dalvikvm(  101): GC_CONCURRENT freed 423K, 40% free 4316K/7175K, 
> external 
> > 3334K/3965K, paused 344ms+182ms 
> > I/dalvikvm(  101): Jit: resizing JitTable from 512 to 1024 
> > D/dalvikvm(  101): GC_CONCURRENT freed 739K, 40% free 4811K/8007K, 
> external 
> > 3345K/3965K, paused 182ms+308ms 
> > W/SharedBufferStack(  111): dequeue: tail=1, head=0, avail=2, queued=0

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