My application gives ANR popup. To find out the reason I have generated a sample.trace file using this line:
Debug.startMethodTracing("sample");
in onCreate method of my activity, and I have added this line to stop tracing to the onDestroy method of the activity:
Debug.stopMethodTracing();
I get the sample.trace file after I destroy the activity. But when I review the file I do not understand it. As I learn there is an online tool which is Perfetto.
However when I open the file in there, it shows blank page while I am expecting some UI.
As a result I need to understand the file and find out the problems that cause the ANR issue but I do not know how to do.
This is a piece of my sample.trace file :
*version
3
data-file-overflow=true
clock=dual
elapsed-time-usec=165959496
num-method-calls=599184
clock-call-overhead-nsec=3338
vm=art
pid=13695
*threads
14436 RxIoScheduler-2
14460 Okio Watchdog
14589 AsyncTask #5
14612 Timer-0
15013 AsyncTask #6
15014 AsyncTask #7
15015 AsyncTask #8
15049 Timer-4
13695 main
13718 Jit thread pool worker thread 0
13724 Signal Catcher
13726 ADB-JDWP Connection Control Thread
13728 FinalizerDaemon
13729 FinalizerWatchdogDaemon
13727 ReferenceQueueDaemon
13730 HeapTaskDaemon
13732 Binder:13695_1
13733 Binder:13695_2
13736 Binder:13695_3
13895 Profile Saver
13909 Queue
13910 Queue
13911 Queue
13912 Queue
13913 Queue
13914 Queue
13916 Queue
13917 Queue
13915 Queue
13936 Answers Events Handler1
13937 queued-work-looper
13941 Crashlytics Exception Handler1
13950 StethoListener-main
13970 OkHttp ConnectionPool
13977 Binder:13695_4
13978 process reaper
13980 process reaper
14016 RenderThread
14023 Binder:13695_5
14026 Binder:13695_6
14021 Thread-16
14152 Thread-17
14153 Thread-18
14156 Studio:InputCon
14165 magnifier pixel copy result handler
14151 Thread-19
14435 RxIoScheduler-1 (Evictor)
14459 OkHttp ConnectionPool
14476 RealmFinalizingDaemon
14480 pool-3-thread-1
14481 pool-3-thread-2
14482 pool-3-thread-3
14483 pool-3-thread-4
14484 pool-3-thread-5
14487 pool-3-thread-6
14489 pool-3-thread-7
14490 pool-3-thread-8
14491 pool-3-thread-9
14602 glide-disk-cache-thread-0
14604 glide-source-thread-0
14614 Timer-1
14615 IntentService[]
14628 glide-source-thread-1
14630 OkHttp ConnectionPool
14633 glide-active-resources
14780 pool-3-thread-10
14788 Picasso-Stats
14789 Picasso-Dispatcher
14790 Picasso-refQueue
14805 Timer-3
14973 SpotScheduleThread
14974 PlaylistScheduleThread
14980 pool-3-thread-11
15000 pool-3-thread-12
15021 RxComputationScheduler-1
15025 RxComputationScheduler-2
15028 OkHttp ConnectionPool
15050 Timer-5
15052 pool-3-thread-13
15053 pool-3-thread-14
15767 pool-3-thread-15
15771 pool-3-thread-16
15772 pool-3-thread-17
*methods
0x18c8 java.lang.BootClassLoader getInstance ()Ljava/lang/BootClassLoader; ClassLoader.java
0x6ba0 java.lang.BootClassLoader findClass (Ljava/lang/String;)Ljava/lang/Class; ClassLoader.java
0x6b9c java.lang.BootClassLoader loadClass (Ljava/lang/String;Z)Ljava/lang/Class; ClassLoader.java
0x7878 java.lang.ClassLoader <init> (Ljava/lang/ClassLoader;)V ClassLoader.java
0x7880 java.lang.ClassLoader <init> (Ljava/lang/Void;Ljava/lang/ClassLoader;)V ClassLoader.java
Thanks in advance.
As I learned I can use Android Studio to see which process is taking more place on cpu and etc.
The only thing that I need to do is opening Profiler window then click the + button and Load from file. Then it will show the statistics of the .trace file.
Thanks!