Sampling process 216 for 3 seconds with 1 millisecond of run time between samples
Sampling completed, processing symbols...
Analysis of sampling Nisus Writer Pro (pid 216) every 1 millisecond
Call graph:
    2401 Thread_1672   DispatchQueue_1: com.apple.main-thread  (serial)
      2401 start
        2401 _start
          2401 NSApplicationMain
            2401 -[NSApplication run]
              2401 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:]
                2401 _DPSNextEvent
                  2401 BlockUntilNextEventMatchingListInMode
                    2401 ReceiveNextEventCommon
                      2401 RunCurrentEventLoopInMode
                        2401 CFRunLoopRunInMode
                          2401 CFRunLoopRunSpecific
                            2401 __CFRunLoopRun
                              2401 mach_msg
                                2401 mach_msg_trap
    2401 Thread_1679   DispatchQueue_2: com.apple.libdispatch-manager  (serial)
      2401 start_wqthread
        2401 _pthread_wqthread
          2401 _dispatch_worker_thread2
            2401 _dispatch_queue_invoke
              2401 _dispatch_mgr_invoke
                2401 kevent
    2401 Thread_1685
      2401 thread_start
        2401 _pthread_start
          2401 __NSThread__main__
            2401 -[NSThread main]
              2401 +[NTSpellCheckerMultiplexer spellCheckMain:]
                2401 -[NSConditionLock lockWhenCondition:]
                  2401 -[NSConditionLock lockWhenCondition:beforeDate:]
                    2401 -[NSCondition waitUntilDate:]
                      2401 pthread_cond_timedwait_relative_np
                        2401 _pthread_cond_wait
                          2401 semaphore_timedwait_signal_trap
    2401 Thread_1686
      2401 thread_start
        2401 _pthread_start
          2401 __NSThread__main__
            2401 -[NSThread main]
              2401 +[NWDocumentStatsThread documentStatsMain:]
                2401 -[NSConditionLock lockWhenCondition:]
                  2401 -[NSConditionLock lockWhenCondition:beforeDate:]
                    2401 -[NSCondition waitUntilDate:]
                      2401 pthread_cond_timedwait_relative_np
                        2401 _pthread_cond_wait
                          2401 semaphore_timedwait_signal_trap
    2401 Thread_1750
      2401 thread_start
        2401 _pthread_start
          2401 __NSThread__main__
            2401 -[NSThread main]
              2401 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:]
                2401 CFRunLoopRunInMode
                  2401 CFRunLoopRunSpecific
                    2401 __CFRunLoopRun
                      2401 mach_msg
                        2401 mach_msg_trap
    2401 Thread_1753: com.apple.CFSocket.private
      2401 thread_start
        2401 _pthread_start
          2401 __CFSocketManager
            2401 select$DARWIN_EXTSN
    2401 Thread_3033
      2401 thread_start
        2401 _pthread_start
          2401 PrivateMPEntryPoint
            2401 TSystemNotificationTask::SystemNotificationTaskProc(void*)
              2401 CFRunLoopRun
                2401 CFRunLoopRunSpecific
                  2401 __CFRunLoopRun
                    2401 mach_msg
                      2401 mach_msg_trap
    2400 Thread_27529
      2400 start_wqthread
        2400 _pthread_wqthread
          2400 __workq_kernreturn
    2399 Thread_27550
      2399 start_wqthread
        2399 _pthread_wqthread
          2399 __workq_kernreturn
    2 Thread_27550   DispatchQueue_76: TFSVolumeInfo::GetSizingGCDQueue  (serial)
      2 start_wqthread
        2 _pthread_wqthread
          2 _dispatch_worker_thread2
            2 _dispatch_queue_invoke
              2 _dispatch_queue_drain
                2 _dispatch_queue_invoke
                  2 _dispatch_source_invoke
                    2 _dispatch_source_latch_and_call
                      2 __dispatch_source_mig_create_block_invoke_1
                        2 dispatch_mig_server
                          2 dispatch_rcv_msg
                            2 FSEventsD2F_server
                              2 _Xcallback_rpc
                                2 implementation_callback_rpc
                                  2 TSystemNotificationTask::HandleFileChanged(__FSEventStream const*, void*, unsigned long, void*, unsigned long const*, unsigned long long const*)
                                    2 TNode::HandleChange(char*, unsigned long, TCountedPtr<TVolumeSyncThread> const&)
                                      1 TNode::FindChildButDontSynchronize(TUString const&) const
                                        1 TChildrenList::Find(TUString const&)
                                          1 TDSMutex::Acquire()
                                            1 pthread_mutex_lock
                                              1 restore_sem_to_pool
                                      1 _FSGetVolumeForMountpoint
                                        1 GetVRefNumByExactMountPointName
                                          1 FSMount::FSMount(char const*, FSMountStringType, long*)
                                            1 FileIDTreeGetVRefNumFromMountPath
                                              1 FileIDTreeGetVRefNumForMountPathBridge
                                                1 FileIDTree_GetVRefNumForMountPath_rpc
                                                  1 mach_msg
                                                    1 mach_msg_trap
    1 Thread_27529   DispatchQueue_82: TFSVolumeInfo::GetSizingGCDQueue  (serial)
      1 start_wqthread
        1 _pthread_wqthread
          1 _dispatch_worker_thread2
            1 _dispatch_queue_invoke
              1 _dispatch_queue_drain
                1 _dispatch_call_block_and_release
                  1 __PostFolderSizingTaskRequest_block_invoke_5
                    1 TNode::HandleFolderSizingRequests(TNodeTask*, TFolderSizingThread*)
                      1 TNode::SetTimerToDispatchResizeRequest(TNodeTask*, double)
                        1 TNode::GetVolumeInfo() const
                          1 TDSMutex::Acquire()
                            1 pthread_mutex_lock
                              1 semaphore_wait_signal_trap

Total number in stack (recursive counted multiple, when >=5):
        5       _pthread_start
        5       _pthread_wqthread
        5       start_wqthread
        5       thread_start

Sort by top of stack, same collapsed (when >= 5):
        mach_msg_trap        7204
        semaphore_timedwait_signal_trap        4802
        __workq_kernreturn        4799
        kevent        2401
        select$DARWIN_EXTSN        2401
Sample analysis of process 216 written to file /dev/stdout