Node.JS + v8 profiling
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| Array = require('gauss').Vector; | |
| var prices = [22.2734, 22.194, 22.0847, 22.1741, 22.184, 22.1344, | |
| 22.2337, 22.4323, 22.2436, 22.2933, 22.1542, 22.3926, | |
| 22.3816, 22.6109, 23.3558, 24.0519, 23.753, 23.8324, | |
| 23.9516, 23.6338, 23.8225, 23.8722, 23.6537, 23.187, | |
| 23.0976, 23.326, 22.6805, 23.0976, 22.4025, 22.1725]; | |
| /* Use Wilder ratio on an exponential moving average period of 10, | |
| 1 million iterations | |
| */ | |
| for (var i = 0; i < 1000000; i++) { | |
| prices.ema({ | |
| period: 10, | |
| ratio: function(n) { | |
| return (1 / n); | |
| } | |
| }); | |
| } |
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| Running: node --prof --log-snapshot-positions --logfile=profile-13264057338989582.log ema.wilder.js | |
| Statistical profiling result from profile-13264057338989582.log, (5343 ticks, 38 unaccounted, 0 excluded). | |
| [Unknown]: | |
| ticks total nonlib name | |
| 38 0.7% | |
| [Shared libraries]: | |
| ticks total nonlib name | |
| 2525 47.3% 0.0% /usr/local/bin/node | |
| [JavaScript]: | |
| ticks total nonlib name | |
| 709 13.3% 25.2% LazyCompile: Array.ema /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:302 | |
| 354 6.6% 12.6% LazyCompile: Join native array.js:100 | |
| 257 4.8% 9.1% KeyedLoadIC: {80} | |
| 167 3.1% 5.9% Stub: NumberToString | |
| 104 1.9% 3.7% Stub: TypeRecordingBinaryOpStub_SUB_Alloc_HeapNumbers | |
| 89 1.7% 3.2% LazyCompile: DefaultNumber native runtime.js:603 | |
| 86 1.6% 3.1% LazyCompile: Array.sum /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:39 | |
| 79 1.5% 2.8% Stub: TypeRecordingBinaryOpStub_MUL_OverwriteRight_HeapNumbers | |
| 71 1.3% 2.5% KeyedStoreIC: {81} | |
| 64 1.2% 2.3% Stub: CEntry | |
| 63 1.2% 2.2% LazyCompile: NonNumberToNumber native runtime.js:514 | |
| 63 1.2% 2.2% Builtin: A builtin from the snapshot | |
| 50 0.9% 1.8% Stub: TypeRecordingBinaryOpStub_ADD_Alloc_HeapNumbers | |
| 47 0.9% 1.7% LazyCompile: options.ratio /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:308 | |
| 46 0.9% 1.6% LazyCompile: DIV native runtime.js:223 | |
| 44 0.8% 1.6% Stub: TypeRecordingBinaryOpStub_ADD_OverwriteLeft_HeapNumbers | |
| 34 0.6% 1.2% LazyCompile: toString native array.js:361 | |
| 30 0.6% 1.1% Stub: TypeRecordingBinaryOpStub_DIV_Alloc_Generic | |
| 26 0.5% 0.9% Stub: FastNewClosure | |
| 21 0.4% 0.7% Stub: TypeRecordingBinaryOpStub_DIV_OverwriteRight_SMI | |
| 21 0.4% 0.7% LazyCompile: <anonymous> /Users/Fredrick/Dropbox/Stackd/services/gauss/sandbox/ema.wilder.js:1 | |
| 20 0.4% 0.7% Stub: CallFunction | |
| 18 0.3% 0.6% LazyCompile: ToNumber native runtime.js:503 | |
| 16 0.3% 0.6% LazyCompile: UseSparseVariant native array.js:92 | |
| 15 0.3% 0.5% Stub: TypeRecordingBinaryOpStub_DIV_Alloc_HeapNumbers | |
| 14 0.3% 0.5% Builtin: A builtin from the snapshot {1} | |
| 10 0.2% 0.4% LazyCompile: ToObject native runtime.js:543 | |
| 8 0.1% 0.3% LazyCompile: IsPrimitive native runtime.js:594 | |
| 8 0.1% 0.3% LazyCompile: <anonymous> /Users/Fredrick/Dropbox/Stackd/services/gauss/sandbox/ema.wilder.js:17 | |
| 7 0.1% 0.2% Stub: FastCloneShallowArray | |
| 6 0.1% 0.2% Stub: TypeRecordingBinaryOpStub_SUB_Alloc_SMI | |
| 6 0.1% 0.2% Stub: CompareIC {1} | |
| 6 0.1% 0.2% Builtin: A builtin from the snapshot {2} | |
| 5 0.1% 0.2% Stub: JSEntry | |
| 4 0.1% 0.1% Stub: CompareIC | |
| 4 0.1% 0.1% Builtin: A builtin from the snapshot {3} | |
| 3 0.1% 0.1% Stub: ToBoolean | |
| 2 0.0% 0.1% Stub: TypeRecordingBinaryOpStub_ADD_Alloc_SMI | |
| 2 0.0% 0.1% LazyCompile: valueOf native v8natives.js:222 | |
| 1 0.0% 0.0% Stub: TypeRecordingBinaryOpStub_BIT_OR_Alloc_Uninitialized | |
| 1 0.0% 0.0% Stub: SubString | |
| 1 0.0% 0.0% Builtin: A builtin from the snapshot {4} | |
| [C++]: | |
| ticks total nonlib name | |
| 100 1.9% 3.5% _chmod | |
| 53 1.0% 1.9% _dbm_open | |
| 52 1.0% 1.8% ___gettimeofday | |
| 5 0.1% 0.2% _proc_listpidspath | |
| 5 0.1% 0.2% _mig_dealloc_reply_port | |
| 2 0.0% 0.1% _semaphore_wait_signal_trap | |
| 2 0.0% 0.1% _mergesort | |
| 2 0.0% 0.1% ___Balloc_D2A | |
| 1 0.0% 0.0% _vm_region_64 | |
| 1 0.0% 0.0% _tiny_free_try_depot_unmap_no_lock | |
| 1 0.0% 0.0% _szone_realloc | |
| 1 0.0% 0.0% _small_malloc_from_free_list | |
| 1 0.0% 0.0% _pthread_workqueue_create_np | |
| 1 0.0% 0.0% _fgets | |
| 1 0.0% 0.0% _fclose | |
| 1 0.0% 0.0% _dbm_fetch | |
| 1 0.0% 0.0% _abort | |
| 1 0.0% 0.0% __pthread_start | |
| 1 0.0% 0.0% __pthread_mutex_init | |
| 1 0.0% 0.0% __asl_server_prune | |
| 1 0.0% 0.0% ___vfprintf | |
| [GC]: | |
| ticks total nonlib name | |
| 72 1.3% | |
| [Bottom up (heavy) profile]: | |
| Note: percentage shows a share of a particular caller in the total | |
| amount of its parent calls. | |
| Callers occupying less than 2.0% are not shown. | |
| ticks parent name | |
| 2525 47.3% /usr/local/bin/node | |
| 1640 65.0% LazyCompile: Join native array.js:100 | |
| 1640 100.0% LazyCompile: toString native array.js:361 | |
| 1640 100.0% LazyCompile: DefaultNumber native runtime.js:603 | |
| 1640 100.0% LazyCompile: NonNumberToNumber native runtime.js:514 | |
| 1640 100.0% LazyCompile: DIV native runtime.js:223 | |
| 314 12.4% LazyCompile: options.ratio /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:308 | |
| 314 100.0% LazyCompile: Array.ema /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:302 | |
| 314 100.0% LazyCompile: <anonymous> /Users/Fredrick/Dropbox/Stackd/services/gauss/sandbox/ema.wilder.js:1 | |
| 314 100.0% Function: Module._compile module.js:349 | |
| 314 100.0% Function: Module._extensions module.js:415 | |
| 290 11.5% LazyCompile: Array.ema /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:302 | |
| 290 100.0% LazyCompile: <anonymous> /Users/Fredrick/Dropbox/Stackd/services/gauss/sandbox/ema.wilder.js:1 | |
| 290 100.0% Function: Module._compile module.js:349 | |
| 290 100.0% Function: Module._extensions module.js:415 | |
| 290 100.0% Function: Module.load module.js:333 | |
| 102 4.0% LazyCompile: ToNumber native runtime.js:503 | |
| 102 100.0% LazyCompile: NonNumberToNumber native runtime.js:514 | |
| 102 100.0% LazyCompile: DIV native runtime.js:223 | |
| 102 100.0% LazyCompile: <anonymous> /Users/Fredrick/Dropbox/Stackd/services/gauss/sandbox/ema.wilder.js:17 | |
| 102 100.0% LazyCompile: Array.ema /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:302 | |
| 709 13.3% LazyCompile: Array.ema /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:302 | |
| 708 99.9% LazyCompile: <anonymous> /Users/Fredrick/Dropbox/Stackd/services/gauss/sandbox/ema.wilder.js:1 | |
| 708 100.0% Function: Module._compile module.js:349 | |
| 708 100.0% Function: Module._extensions module.js:415 | |
| 708 100.0% Function: Module.load module.js:333 | |
| 708 100.0% Function: Module._load module.js:266 | |
| 354 6.6% LazyCompile: Join native array.js:100 | |
| 352 99.4% LazyCompile: toString native array.js:361 | |
| 352 100.0% LazyCompile: DefaultNumber native runtime.js:603 | |
| 352 100.0% LazyCompile: NonNumberToNumber native runtime.js:514 | |
| 352 100.0% LazyCompile: DIV native runtime.js:223 | |
| 352 100.0% LazyCompile: <anonymous> /Users/Fredrick/Dropbox/Stackd/services/gauss/sandbox/ema.wilder.js:17 | |
| 257 4.8% KeyedLoadIC: {80} | |
| 154 59.9% LazyCompile: Array.ema /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:302 | |
| 154 100.0% LazyCompile: <anonymous> /Users/Fredrick/Dropbox/Stackd/services/gauss/sandbox/ema.wilder.js:1 | |
| 154 100.0% Function: Module._compile module.js:349 | |
| 154 100.0% Function: Module._extensions module.js:415 | |
| 154 100.0% Function: Module.load module.js:333 | |
| 65 25.3% LazyCompile: Join native array.js:100 | |
| 65 100.0% LazyCompile: toString native array.js:361 | |
| 65 100.0% LazyCompile: DefaultNumber native runtime.js:603 | |
| 65 100.0% LazyCompile: NonNumberToNumber native runtime.js:514 | |
| 65 100.0% LazyCompile: DIV native runtime.js:223 | |
| 38 14.8% LazyCompile: Array.sum /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:39 | |
| 38 100.0% LazyCompile: Array.ema /Users/Fredrick/Dropbox/Stackd/services/gauss/lib/vector.js:302 | |
| 38 100.0% LazyCompile: <anonymous> /Users/Fredrick/Dropbox/Stackd/services/gauss/sandbox/ema.wilder.js:1 | |
| 38 100.0% Function: Module._compile module.js:349 | |
| 38 100.0% Function: Module._extensions module.js:415 | |
| 167 3.1% Stub: NumberToString | |
| 167 100.0% LazyCompile: Join native array.js:100 | |
| 167 100.0% LazyCompile: toString native array.js:361 | |
| 167 100.0% LazyCompile: DefaultNumber native runtime.js:603 | |
| 167 100.0% LazyCompile: NonNumberToNumber native runtime.js:514 | |
| 167 100.0% LazyCompile: DIV native runtime.js:223 | |
| Successfully deleted temporary: profile-13264057338989582.log |
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