1"id","type","depth","name","map_name","count","cumulative_count","size","cumulative_size","alloc_count","cumulative_alloc_count","alloc_size","cumulative_alloc_size","parent_id","source_file","line_number","upid_group" 20,"experimental_flamegraph_nodes",0,"__start_thread","/apex/com.android.runtime/lib64/bionic/libc.so",0,560,0,560,0,0,0,0,"[NULL]","[NULL]","[NULL]","[NULL]" 31,"experimental_flamegraph_nodes",1,"_ZL15__pthread_startPv","/apex/com.android.runtime/lib64/bionic/libc.so",0,560,0,560,0,0,0,0,0,"[NULL]","[NULL]","[NULL]" 42,"experimental_flamegraph_nodes",2,"_ZN3art6Thread14CreateCallbackEPv","/apex/com.android.art/lib64/libart.so",0,301,0,301,0,0,0,0,1,"[NULL]","[NULL]","[NULL]" 53,"experimental_flamegraph_nodes",3,"_ZN3art35InvokeVirtualOrInterfaceWithJValuesIPNS_9ArtMethodEEENS_6JValueERKNS_33ScopedObjectAccessAlreadyRunnableEP8_jobjectT_PK6jvalue","/apex/com.android.art/lib64/libart.so",0,301,0,301,0,0,0,0,2,"[NULL]","[NULL]","[NULL]" 64,"experimental_flamegraph_nodes",4,"_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc","/apex/com.android.art/lib64/libart.so",0,301,0,301,0,0,0,0,3,"[NULL]","[NULL]","[NULL]" 75,"experimental_flamegraph_nodes",5,"art_quick_invoke_stub","/apex/com.android.art/lib64/libart.so",0,301,0,301,0,0,0,0,4,"[NULL]","[NULL]","[NULL]" 86,"experimental_flamegraph_nodes",6,"android.os.HandlerThread.run","/system/framework/arm64/boot-framework.oat",0,43,0,43,0,0,0,0,5,"[NULL]","[NULL]","[NULL]" 97,"experimental_flamegraph_nodes",7,"android.os.Looper.loop","/system/framework/arm64/boot-framework.oat",0,43,0,43,0,0,0,0,6,"[NULL]","[NULL]","[NULL]" 108,"experimental_flamegraph_nodes",8,"android.os.Looper.loopOnce","/system/framework/arm64/boot-framework.oat",1,43,1,43,0,0,0,0,7,"[NULL]","[NULL]","[NULL]" 119,"experimental_flamegraph_nodes",9,"android.os.Handler.dispatchMessage","/system/framework/arm64/boot-framework.oat",0,35,0,35,0,0,0,0,8,"[NULL]","[NULL]","[NULL]" 12