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Last active Mar 2, 2019

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go sync package benchmarks: mbp 2013 vs mbp 2017

Benchmarks done with go 1.12 version.

mbp 2017 results

  • CPU: Intel Core i7-7820HQ @ 2.90GHz
  • RAM: 16 GB 2133 MHz LPDDR3
goos: darwin
goarch: amd64
pkg: sync
BenchmarkCond1-8                   	10000000	       236 ns/op	       0 B/op	       0 allocs/op
BenchmarkCond2-8                   	 1000000	      1484 ns/op	       0 B/op	       0 allocs/op
BenchmarkCond4-8                   	  500000	      2616 ns/op	       0 B/op	       0 allocs/op
BenchmarkCond8-8                   	  300000	      4242 ns/op	       0 B/op	       0 allocs/op
BenchmarkCond16-8                  	  200000	      6137 ns/op	       0 B/op	       0 allocs/op
BenchmarkCond32-8                  	  100000	     13184 ns/op	       0 B/op	       0 allocs/op
BenchmarkLoadMostlyHits/*sync_test.DeepCopyMap-8         	100000000	        13.8 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadMostlyHits/*sync_test.RWMutexMap-8          	30000000	        51.7 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadMostlyHits/*sync.Map-8                      	100000000	        15.8 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadMostlyMisses/*sync_test.DeepCopyMap-8       	100000000	        11.9 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadMostlyMisses/*sync_test.RWMutexMap-8        	30000000	        50.9 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadMostlyMisses/*sync.Map-8                    	100000000	        10.6 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadOrStoreBalanced/*sync_test.RWMutexMap-8     	 5000000	       377 ns/op	      80 B/op	       2 allocs/op
BenchmarkLoadOrStoreBalanced/*sync.Map-8                 	 5000000	       495 ns/op	      77 B/op	       3 allocs/op
BenchmarkLoadOrStoreUnique/*sync_test.RWMutexMap-8       	 3000000	       529 ns/op	     127 B/op	       2 allocs/op
BenchmarkLoadOrStoreUnique/*sync.Map-8                   	 2000000	       748 ns/op	     163 B/op	       4 allocs/op
BenchmarkLoadOrStoreCollision/*sync_test.DeepCopyMap-8   	200000000	         7.17 ns/op	       0 B/op	       0 allocs/op
BenchmarkLoadOrStoreCollision/*sync_test.RWMutexMap-8    	20000000	       103 ns/op	       0 B/op	       0 allocs/op
BenchmarkLoadOrStoreCollision/*sync.Map-8                	200000000	         7.98 ns/op	       0 B/op	       0 allocs/op
BenchmarkRange/*sync_test.DeepCopyMap-8                  	  500000	      3797 ns/op	       0 B/op	       0 allocs/op
BenchmarkRange/*sync_test.RWMutexMap-8                   	   30000	     54853 ns/op	   16384 B/op	       1 allocs/op
BenchmarkRange/*sync.Map-8                               	  300000	      4148 ns/op	       0 B/op	       0 allocs/op
BenchmarkAdversarialAlloc/*sync_test.DeepCopyMap-8       	 2000000	       719 ns/op	     534 B/op	       1 allocs/op
BenchmarkAdversarialAlloc/*sync_test.RWMutexMap-8        	20000000	        67.6 ns/op	       8 B/op	       1 allocs/op
BenchmarkAdversarialAlloc/*sync.Map-8                    	 5000000	       254 ns/op	      51 B/op	       1 allocs/op
BenchmarkAdversarialDelete/*sync_test.DeepCopyMap-8      	10000000	       190 ns/op	     168 B/op	       1 allocs/op
BenchmarkAdversarialDelete/*sync_test.RWMutexMap-8       	20000000	        76.4 ns/op	      25 B/op	       1 allocs/op
BenchmarkAdversarialDelete/*sync.Map-8                   	20000000	        61.2 ns/op	      18 B/op	       1 allocs/op
BenchmarkUncontendedSemaphore-8                          	100000000	        19.3 ns/op	       0 B/op	       0 allocs/op
BenchmarkContendedSemaphore-8                            	50000000	        27.5 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexUncontended-8                              	500000000	         3.42 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutex-8                                         	30000000	        56.2 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexSlack-8                                    	20000000	        68.4 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexWork-8                                     	20000000	        84.4 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexWorkSlack-8                                	20000000	       106 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexNoSpin-8                                   	10000000	       203 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexSpin-8                                     	 2000000	       736 ns/op	       0 B/op	       0 allocs/op
BenchmarkOnce-8                                          	2000000000	         0.95 ns/op	       0 B/op	       0 allocs/op
BenchmarkPool-8                                          	300000000	         4.67 ns/op	       0 B/op	       0 allocs/op
BenchmarkPoolOverflow-8                                  	 2000000	       902 ns/op	       0 B/op	       0 allocs/op
BenchmarkSemaUncontended-8                               	500000000	         3.94 ns/op	       0 B/op	       0 allocs/op
BenchmarkSemaSyntNonblock-8                              	20000000	       118 ns/op	       0 B/op	       0 allocs/op
BenchmarkSemaSyntBlock-8                                 	20000000	        86.2 ns/op	       0 B/op	       0 allocs/op
BenchmarkSemaWorkNonblock-8                              	20000000	       115 ns/op	       0 B/op	       0 allocs/op
BenchmarkSemaWorkBlock-8                                 	20000000	       103 ns/op	       0 B/op	       0 allocs/op
BenchmarkRWMutexUncontended-8                            	100000000	        12.7 ns/op	       0 B/op	       0 allocs/op
BenchmarkRWMutexWrite100-8                               	20000000	        75.7 ns/op	       0 B/op	       0 allocs/op
BenchmarkRWMutexWrite10-8                                	50000000	        37.3 ns/op	       0 B/op	       0 allocs/op
BenchmarkRWMutexWorkWrite100-8                           	10000000	       137 ns/op	       0 B/op	       0 allocs/op
BenchmarkRWMutexWorkWrite10-8                            	10000000	       203 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupUncontended-8                          	300000000	         4.28 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupAddDone-8                              	30000000	        52.2 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupAddDoneWork-8                          	30000000	        53.1 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupWait-8                                 	2000000000	         0.80 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupWaitWork-8                             	100000000	        10.2 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupActuallyWait-8                         	20000000	       106 ns/op	      16 B/op	       1 allocs/op
PASS
ok  	sync	105.167s

mbp 2013 results

  • CPU: Intel Core i7-4850HQ @ 2.30GHz
  • RAM: 16 GB 1600 MHz DDR3
goos: darwin
goarch: amd64
pkg: sync
BenchmarkCond1-8                   	 5000000	       250 ns/op	       0 B/op	       0 allocs/op
BenchmarkCond2-8                   	 1000000	      1701 ns/op	       0 B/op	       0 allocs/op
BenchmarkCond4-8                   	  500000	      3772 ns/op	       0 B/op	       0 allocs/op
BenchmarkCond8-8                   	  300000	      4372 ns/op	       0 B/op	       0 allocs/op
BenchmarkCond16-8                  	  200000	      7380 ns/op	       0 B/op	       0 allocs/op
BenchmarkCond32-8                  	  100000	     16179 ns/op	       0 B/op	       0 allocs/op
BenchmarkLoadMostlyHits/*sync_test.DeepCopyMap-8         	100000000	        15.2 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadMostlyHits/*sync_test.RWMutexMap-8          	30000000	        59.5 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadMostlyHits/*sync.Map-8                      	100000000	        16.3 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadMostlyMisses/*sync_test.DeepCopyMap-8       	100000000	        10.2 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadMostlyMisses/*sync_test.RWMutexMap-8        	20000000	        66.6 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadMostlyMisses/*sync.Map-8                    	100000000	        10.6 ns/op	       7 B/op	       0 allocs/op
BenchmarkLoadOrStoreBalanced/*sync_test.RWMutexMap-8     	 3000000	       499 ns/op	      71 B/op	       2 allocs/op
BenchmarkLoadOrStoreBalanced/*sync.Map-8                 	 3000000	       408 ns/op	      70 B/op	       3 allocs/op
BenchmarkLoadOrStoreUnique/*sync_test.RWMutexMap-8       	 2000000	       829 ns/op	     178 B/op	       2 allocs/op
BenchmarkLoadOrStoreUnique/*sync.Map-8                   	 2000000	       845 ns/op	     163 B/op	       4 allocs/op
BenchmarkLoadOrStoreCollision/*sync_test.DeepCopyMap-8   	200000000	         6.71 ns/op	       0 B/op	       0 allocs/op
BenchmarkLoadOrStoreCollision/*sync_test.RWMutexMap-8    	10000000	       174 ns/op	       0 B/op	       0 allocs/op
BenchmarkLoadOrStoreCollision/*sync.Map-8                	200000000	         8.20 ns/op	       0 B/op	       0 allocs/op
BenchmarkRange/*sync_test.DeepCopyMap-8                  	  500000	      3766 ns/op	       0 B/op	       0 allocs/op
BenchmarkRange/*sync_test.RWMutexMap-8                   	   20000	     65936 ns/op	   16384 B/op	       1 allocs/op
BenchmarkRange/*sync.Map-8                               	  300000	      3979 ns/op	       0 B/op	       0 allocs/op
BenchmarkAdversarialAlloc/*sync_test.DeepCopyMap-8       	 2000000	       839 ns/op	     534 B/op	       1 allocs/op
BenchmarkAdversarialAlloc/*sync_test.RWMutexMap-8        	20000000	        69.1 ns/op	       8 B/op	       1 allocs/op
BenchmarkAdversarialAlloc/*sync.Map-8                    	 5000000	       372 ns/op	      50 B/op	       1 allocs/op
BenchmarkAdversarialDelete/*sync_test.DeepCopyMap-8      	10000000	       211 ns/op	     168 B/op	       1 allocs/op
BenchmarkAdversarialDelete/*sync_test.RWMutexMap-8       	20000000	        81.9 ns/op	      25 B/op	       1 allocs/op
BenchmarkAdversarialDelete/*sync.Map-8                   	20000000	        67.1 ns/op	      15 B/op	       1 allocs/op
BenchmarkUncontendedSemaphore-8                          	100000000	        20.9 ns/op	       0 B/op	       0 allocs/op
BenchmarkContendedSemaphore-8                            	20000000	        86.8 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexUncontended-8                              	500000000	         3.45 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutex-8                                         	20000000	        85.0 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexSlack-8                                    	20000000	        81.3 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexWork-8                                     	10000000	       122 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexWorkSlack-8                                	10000000	       121 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexNoSpin-8                                   	 5000000	       245 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexSpin-8                                     	 1000000	      1051 ns/op	       0 B/op	       0 allocs/op
BenchmarkOnce-8                                          	2000000000	         1.08 ns/op	       0 B/op	       0 allocs/op
BenchmarkPool-8                                          	300000000	         4.52 ns/op	       0 B/op	       0 allocs/op
BenchmarkPoolOverflow-8                                  	 2000000	       961 ns/op	       0 B/op	       0 allocs/op
BenchmarkSemaUncontended-8                               	300000000	         4.16 ns/op	       0 B/op	       0 allocs/op
BenchmarkSemaSyntNonblock-8                              	10000000	       175 ns/op	       0 B/op	       0 allocs/op
BenchmarkSemaSyntBlock-8                                 	10000000	       156 ns/op	       0 B/op	       0 allocs/op
BenchmarkSemaWorkNonblock-8                              	10000000	       156 ns/op	       0 B/op	       0 allocs/op
BenchmarkSemaWorkBlock-8                                 	10000000	       150 ns/op	       0 B/op	       0 allocs/op
BenchmarkRWMutexUncontended-8                            	100000000	        13.1 ns/op	       0 B/op	       0 allocs/op
BenchmarkRWMutexWrite100-8                               	20000000	       109 ns/op	       0 B/op	       0 allocs/op
BenchmarkRWMutexWrite10-8                                	20000000	        63.0 ns/op	       0 B/op	       0 allocs/op
BenchmarkRWMutexWorkWrite100-8                           	10000000	       215 ns/op	       0 B/op	       0 allocs/op
BenchmarkRWMutexWorkWrite10-8                            	 5000000	       268 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupUncontended-8                          	300000000	         4.60 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupAddDone-8                              	20000000	        76.9 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupAddDoneWork-8                          	20000000	        68.1 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupWait-8                                 	2000000000	         0.77 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupWaitWork-8                             	200000000	         9.38 ns/op	       0 B/op	       0 allocs/op
BenchmarkWaitGroupActuallyWait-8                         	20000000	       102 ns/op	      16 B/op	       1 allocs/op
PASS
ok  	sync	102.326s
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