Analysis of sampling pid 400 during 10 secs 5000 samples Call graph: 1000 Thread_0 1000 start 1000 _start 1000 main 1000 NSApplicationMain 1000 -[NSApplication run] 1000 -[NSApplication sendEvent:] 1000 -[NSWindow sendEvent:] 1000 -[KeyDownView keyDown:] 1000 -[ChatWindow returnHit] 1000 -[ChatWindow send:] 1000 -[CommunicationController sendIMToUser:attributedMessage:] 1000 -[MSNCommunicationController sendIMToUser:attributedMessage:] 1000 MSN_SendMessage 1000 RequestSwitchboardSession 1000 MSN_Read 1000 read 1000 read [STACK TOP] 1000 Thread_1 1000 _pthread_body 1000 CAPThread::Entry(CAPThread *) 1000 XIOAudioDeviceManager::NotificationThread(XIOAudioDeviceManager *) 1000 CFRunLoopRunInMode 1000 CFRunLoopRunSpecific 1000 __CFRunLoopRun 1000 mach_msg 1000 mach_msg_overwrite_trap 1000 mach_msg_overwrite_trap [STACK TOP] 1000 Thread_2 1000 _pthread_body 1000 TimerThread 1000 TSWaitOnSemaphoreCommon 1000 TSWaitOnCondition 1000 _pthread_cond_wait 1000 semaphore_wait_signal_trap 1000 semaphore_wait_signal_trap [STACK TOP] 1000 Thread_3 1000 _pthread_body 1000 forkThreadForFunction 1000 -[NSUIHeartBeat _heartBeatThread:] 1000 -[NSConditionLock lockWhenCondition:] 1000 _pthread_cond_wait 1000 semaphore_wait_signal_trap 1000 semaphore_wait_signal_trap [STACK TOP] 1000 Thread_4 1000 _pthread_body 1000 pthread_exit 1000 _pthread_become_available 1000 mach_msg 1000 mach_msg_overwrite_trap 1000 mach_msg_overwrite_trap [STACK TOP] Total number in stack (recursive counted multiple, when >=5): Sort by top of stack, same collapsed (when >= 5): mach_msg_overwrite_trap [STACK TOP] 2000 semaphore_wait_signal_trap [STACK TOP] 2000 read [STACK TOP] 1000