Sampling process 751 for 3 seconds with 1 millisecond of run time between samples Sampling completed, processing symbols... Analysis of sampling vs (pid 751) every 1 millisecond Call graph: 2633 Thread_23504 DispatchQueue_1: com.apple.main-thread (serial) 2633 0x25fd 2633 0x26d6 2633 0x2ef32 2633 0x6f46c7 2478 0x106db 2478 0x6f1b5c 2463 0x6def38 2463 0x6dacc4 2463 select 2463 select$DARWIN_EXTSN$NOCANCEL 13 0x6def7b 13 XtAppPending 11 XEventsQueued 9 _XEventsQueued 5 _X11TransSocketBytesReadable 5 ioctl 2 _XRead 1 _XEventsQueued 1 _XFlushInt 2 XEventsQueued 1 XtAppPending 1 _XtWaitForSomething 1 __memcpy 1 0x6def58 1 0x6def73 155 0x1071c 155 0x6f1c33 155 0x6dd0ca 136 0x6dcf0c 136 0x6f0c7b 136 0xa829c 136 0xb2f35 136 0x1952b5 136 0x51e82 136 0x51c0b 132 0x388a5 25 0x127428 21 0x12724c 18 0x126ace 7 0x12f372 6 0x46211 6 0x5383d 6 0x6fd604 6 0x6fd332 1 0x6fcda4 1 0x6fcdb8 1 0x6fcdbb 1 0x6fcdd9 1 0x6fcdef 1 0x6fcdf4 1 0xfd519 1 0x46223 4 0x12eae2 3 0x46211 3 0x5383d 3 0x6fd604 2 0x6fd332 1 0x6fcd74 1 0x6fcdf4 1 0xfd519 1 0x6fd298 1 0x461fa 2 0x12f367 1 0x12dd13 1 0x12b06b 1 0x123c9b 1 0x12dd5e 1 0x3b6b0 1 0x12dd6c 1 0x45ad7 1 0x5408a 1 0x5401b 1 0x12eac3 1 0x133817 2 0x126a33 1 0xa0fd94 2 0x127174 1 0x6fcbd6 1 0x6fcbe8 2 0x127257 1 0x7f4e2 1 0xa0fd94 24 0x3a074 13 0x39fb5 7 0x3755b 1 0x36e00 1 0x36e99 1 0x36f43 1 0x36f62 1 si_profile_get_start_time() 1 0x36f8d 1 0x37221 1 0x37232 3 0x375ee 2 0x54125 2 0x5408a 1 0x53ff0 1 0x53f84 1 0x6fd516 1 0x6fcfe4 1 0x54019 1 0x54096 1 0x375c2 1 0x37604 1 0x3768b 8 0x39eeb 8 0x397fb 8 0x35ed5 8 0x8af05 6 0x8ad37 6 POMString::POMString(char const*) 3 0x70b5a9 2 0x70b395 1 0x70b07c 1 POMAllocator::getSegmentIndex(unsigned long) const 1 0x70b157 1 0x70afe8 1 POMAllocator::getNextSegmentInBlock(POMAllocator::POMSegmentInfo const*) const 1 0x70b40c 3 POMString::POMString(char const*) 1 0x8ad4c 1 POMHash >::operator[](POMString) 1 POMHash >::hashKey(POMString) const 1 0x70ed3d 1 0x70ecfd 1 0x8ad5a 1 POMString::~POMString() 1 0x70c97b 1 0x70bd61 1 0x70b6be 1 VSGUARD::VSGUARD(VSMUTEX&) 2 0x39f6a 1 0x5c424 1 0x5c483 1 0x5bb15 1 0x39e4f 13 0x1273dd 13 0x47f8f 7 0x47e26 5 0x5ca54 1 0x706293 1 0x70629f 1 0x7062d4 1 0x7062e1 1 0x7062e4 1 0x5ca3f 1 0x5ca61 4 0x47e5f 3 0x5408a 3 0x53ff0 2 0x53f84 2 0x6fd516 1 0x6fce85 1 0x6fd03b 1 0x6fcd09 1 0x53f64 1 0x52e31 1 0x54071 1 0x47cf6 1 0x47e76 7 0x1e644b 6 0x47f8f 3 0x47e5f 3 0x5408a 2 0x54026 1 0x53ff0 1 0x53f84 1 0x6fd516 1 0x6fd03b 1 0x6fccd0 1 0x47d2e 1 0x47e0a 1 0x47e62 1 0x47f75 6 0x1e645f 5 0x47f8f 3 0x47e5f 3 0x5408a 3 0x53ff0 3 0x53f84 3 0x6fd516 1 0x6fce85 1 0x6fd03b 1 0x6fccf2 1 0x6fd096 1 0x47e26 1 0x5c9e4 1 0x47e62 1 0x47f94 6 0x458b5 3 0x5383d 2 0x6fd604 2 0x6fd332 1 0x6fcdf4 1 0xfd4e7 1 0x6fcdfa 1 0x6fd5e9 1 0x53847 1 0x53c50 1 0x53c55 5 0x1273f1 5 0x7064df 1 0x7062fe 1 0x706335 1 0x7063e4 1 0x7063f6 1 0x7064df 5 0x1e5e2b 3 0x5f418 3 0x5f226 1 0x5d9d8 1 0x5d8da 1 0x5daa0 1 vsctUpcaseEqual(char, char) 1 0x5dd40 2 0x5f505 1 0x5f2cf 1 0x5f312 5 0x46cec 4 0x46211 4 0x5383d 2 0x6fd604 1 0x6fd26e 1 0x6fd271 1 0x6fd5e9 1 0x6fd5ef 1 0x4612a 4 0x46d49 3 0x45bc3 3 0x53ff0 2 0x53f84 2 0x6fd516 2 0x6fd03b 1 0x6fccf2 1 0x6fcd1e 1 0xfd4b0 1 0x53f40 1 0xa0fd94 3 0x1343e6 2 0x895b1 1 0x47a03 1 0x47a26 1 0x5c4a0 1 0x895f7 1 0x4611e 3 0x1e6037 2 0xa0fd94 1 0x2e456 3 0x458c3 1 0x44c9d 1 0xa0fd97 1 0x44ccd 1 0x44cd0 2 0x127347 2 0x1e5d31 2 0x3a7b4 1 0x3a626 1 0x3a6e9 1 0x36d2c 1 0x127357 1 0x126956 1 0x1273ec 1 0x1279e9 1 0x3a074 1 0x39e54 1 0x127a2d 1 0x3a074 1 0x39eeb 1 0x38bd4 1 0x1343b5 1 0x1e5bf5 1 0x1e5e7c 1 0x1e5ff1 1 0x1e6072 1 0x1e6435 1 0x457ca 1 0x457cb 1 0x4582d 1 0x45842 1 0x5104b 1 0x79f46 1 0x79e97 1 0x7408d7 1 gmtime 1 __spin_lock 1 0xa0fd94 1 0x38888 1 0x38896 1 0x388a3 1 0x388af 19 0x6dcee7 19 0x6dcd71 19 0xb0e81 19 0xa2970 19 0x15b7c5 19 0x15b533 19 0x388a5 3 0x1273dd 3 0x47f8f 2 0x47e26 1 0x5ca54 1 0x70628d 1 0x5ca64 1 0xa0fd94 3 0x46d49 3 0x45bc6 2 0x127428 1 0x12724c 1 0x126ace 1 0x12dd13 1 0x12b06b 1 0x123cb0 1 0x127257 1 0x7f474 2 0x1e5e2b 1 0x5f441 1 0x5f50d 2 0x3a074 2 0x39fb5 2 0x375ee 2 0x54125 2 0x5408a 1 0x53ff0 1 0x53f84 1 0x6fd516 1 0x6fd03b 1 0x6fcd1e 1 0xfd482 1 0x54019 2 0x46cec 2 0x46211 2 0x537ea 1 0x1343e6 1 0x895f7 1 0xa0fd94 1 0x1e645f 1 0x47f8f 1 0x47e5f 1 0x5408a 1 0x53ff0 1 0x53f84 1 0x6fd516 1 0x6fd03b 1 0x6fccec 1 0x1e6942 1 0x4589e 1 0x458c3 1 0x44c9d 2633 Thread_133367 DispatchQueue_2: com.apple.libdispatch-manager (serial) 2633 start_wqthread 2633 _pthread_wqthread 2633 _dispatch_worker_thread2 2633 _dispatch_queue_invoke 2633 _dispatch_mgr_invoke 2633 kevent 2295 Thread_342296 2295 start_wqthread 2295 _pthread_wqthread 2295 __workq_kernreturn Total number in stack (recursive counted multiple, when >=5): 7 0x53f84 7 0x53ff0 7 0x5408a 7 0x6fd516 7 0xa0fd94 6 0x6fd03b 5 0x47f8f Sort by top of stack, same collapsed (when >= 5): kevent 2633 select$DARWIN_EXTSN$NOCANCEL 2463 __workq_kernreturn 2295 0xa0fd94 8 ioctl 5 Sample analysis of process 751 written to file /dev/stdout