Sampling process 12259 for 3 seconds with 1 millisecond of run time between samples Sampling completed, processing symbols... Analysis of sampling Transmission (pid 12259) every 1 millisecond Call graph: 1555 Thread_2503 1555 start 1555 _start 1555 main 1555 NSApplicationMain 1555 -[NSApplication run] 1555 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] 1555 _DPSNextEvent 1555 BlockUntilNextEventMatchingListInMode 1555 ReceiveNextEventCommon 1555 RunCurrentEventLoopInMode 1555 CFRunLoopRunSpecific 1555 __NSFireTimer 1555 -[Controller updateUI] 1555 -[NSArray makeObjectsPerformSelector:] 1555 -[Torrent update] 1555 tr_torrentStat 1555 tr_torrentLock 1555 tr_globalLock 1555 tr_lockLock 1555 pthread_mutex_lock 1555 semaphore_wait_signal_trap 1555 semaphore_wait_signal_trap 1555 Thread_2603 1555 _pthread_start 1555 ThreadFunc 1555 libeventThreadFunc 1555 event_dispatch 1555 event_loop 1555 event_base_loop 1555 event_process_active 1555 timerCallback 1555 refillPulse 1555 tr_peerMsgsAddRequest 1555 reqIsValid 1555 fprintf$LDBL128 1555 vfprintf_l$LDBL128 1553 __vfprintf$LDBL128 1552 __sflush 1552 _swrite 1551 write$NOCANCEL$UNIX2003 1551 write$NOCANCEL$UNIX2003 1 _swrite 1 __vfprintf$LDBL128 1 __sfvwrite 1 __sfvwrite 2 dyld_stub_pthread_mutex_unlock 2 dyld_stub_pthread_mutex_unlock 1555 Thread_2703 1555 _backgroundActivity 1555 accept$UNIX2003 1555 accept$UNIX2003 1555 Thread_2803 1555 _pthread_start 1555 __NSThread__main__ 1555 -[UKKQueue watcherThread:] 1555 kevent 1555 kevent 1555 Thread_2903 1555 _pthread_start 1555 __NSThread__main__ 1555 -[NSUIHeartBeat _heartBeatThread:] 1555 -[NSConditionLock lockWhenCondition:beforeDate:] 1555 -[NSCondition waitUntilDate:] 1555 _pthread_cond_wait 1555 semaphore_timedwait_signal_trap 1555 semaphore_timedwait_signal_trap 1555 Thread_2a03 1555 _pthread_start 1555 CAPThread::Entry(CAPThread*) 1555 HALRunLoop::OwnThread(void*) 1555 CFRunLoopRunSpecific 1555 mach_msg 1555 mach_msg_trap 1555 mach_msg_trap 1555 Thread_2b03 1555 _pthread_start 1555 __NSThread__main__ 1555 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] 1555 CFRunLoopRunSpecific 1555 mach_msg 1555 mach_msg_trap 1555 mach_msg_trap 1555 Thread_2c03 1555 __CFSocketManager 1555 select$DARWIN_EXTSN 1555 select$DARWIN_EXTSN 1555 Thread_2d03 1555 _pthread_start 1555 CFURLCacheWorkerThread(void*) 1555 CFRunLoopRunSpecific 1555 mach_msg 1555 mach_msg_trap 1555 mach_msg_trap 1555 Thread_2e03 1555 _pthread_start 1555 PrivateMPEntryPoint 1555 TSystemNotificationTask::SystemNotificationTaskProc(void*) 1555 CFRunLoopRun 1555 CFRunLoopRunSpecific 1555 mach_msg 1555 mach_msg_trap 1555 mach_msg_trap 1555 Thread_2f03 1555 _pthread_start 1555 PrivateMPEntryPoint 1555 TFSEventsNotificationTask::FSEventsNotificationTaskProc(void*) 1555 CFRunLoopRun 1555 CFRunLoopRunSpecific 1555 mach_msg 1555 mach_msg_trap 1555 mach_msg_trap 1555 Thread_3003 1555 _pthread_start 1555 PrivateMPEntryPoint 1555 TNodeSyncTask::SyncTaskProc(void*) 1555 MPWaitOnQueue 1555 TSWaitOnConditionTimedRelative 1555 TSWaitOnCondition 1555 _pthread_cond_wait 1555 __semwait_signal 1555 __semwait_signal 1555 Thread_3103 1555 __monitor_file_descriptor__ 1555 kevent 1555 kevent 1555 Thread_3203 1555 _pthread_start 1555 PrivateMPEntryPoint 1555 TFolderSizeTask::FolderSizeTaskProc(void*) 1555 MPWaitOnQueue 1555 TSWaitOnConditionTimedRelative 1555 _pthread_cond_wait 1555 semaphore_timedwait_signal_trap 1555 semaphore_timedwait_signal_trap Total number in stack (recursive counted multiple, when >=5): 10 _pthread_start 6 CFRunLoopRunSpecific 5 mach_msg 5 mach_msg_trap Sort by top of stack, same collapsed (when >= 5): mach_msg_trap 7775 kevent 3110 semaphore_timedwait_signal_trap 3110 __semwait_signal 1555 accept$UNIX2003 1555 select$DARWIN_EXTSN 1555 semaphore_wait_signal_trap 1555 write$NOCANCEL$UNIX2003 1551 Sample analysis of process 12259 written to file /dev/stdout