Hardware Overview:

Model Name: iMac
Model Identifier: iMac13,2
Processor Name: Intel Core i7
Processor Speed: 3.4 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 16 GB

OS X 10.11

Spinlock:

Thread #1: min latency = 19  
Thread #1: max latency = 2035391  
Thread #1: mean latency = 190.356683, count = 4983621  
Thread #2: min latency = 19  
Thread #2: max latency = 5032372  
Thread #2: mean latency = 190.837564, count = 5016381  
Result - 1.475962

Semaphore:

Thread #1: min latency = 19  
Thread #1: max latency = 2544805  
Thread #1: mean latency = 288.588579, count = 5009820  
Thread #2: min latency = 19  
Thread #2: max latency = 471392  
Thread #2: mean latency = 268.325415, count = 4990182  
Result - 3.833730

Mutex:

Thread #1: min latency = 21  
Thread #1: max latency = 407322  
Thread #1: mean latency = 6370.995614, count = 4997434  
Thread #2: min latency = 21  
Thread #2: max latency = 295866  
Thread #2: mean latency = 6378.456008, count = 5002568  
Result - 42.626932

Adaptive #1:

Thread #1: min latency = 22  
Thread #1: max latency = 9963802  
Thread #1: mean latency = 156.673405, count = 5695288  
Thread #2: min latency = 22  
Thread #2: max latency = 9585169  
Thread #2: mean latency = 253.212717, count = 4304714  
Lock: spins = 83, spins count = 8881969, locks count = 7459  
Result - 1.677453

Adaptive #2:

Thread #1: min latency = 22  
Thread #1: max latency = 9978297  
Thread #1: mean latency = 158.928476, count = 5342999  
Thread #2: min latency = 22  
Thread #2: max latency = 8428217  
Thread #2: mean latency = 221.338897, count = 4657003  
Lock: spins = 110, spins count = 7526288, locks count = 5405  
Result - 1.583836

OS X 10.8

Spinlock:

Thread #1: min latency = 19  
Thread #1: max latency = 1036178  
Thread #1: mean latency = 222.629722, count = 5155813  
Thread #2: min latency = 20  
Thread #2: max latency = 1062551  
Thread #2: mean latency = 245.348301, count = 4844189  
Result - 1.921168

Semaphore:

Thread #1: min latency = 345  
Thread #1: max latency = 1103199  
Thread #1: mean latency = 1017.752916, count = 5183223  
Thread #2: min latency = 345  
Thread #2: max latency = 1157835  
Thread #2: mean latency = 1103.459290, count = 4816779  
Result - 11.697605

Mutex:

Thread #1: min latency = 25  
Thread #1: max latency = 3794281  
Thread #1: mean latency = 47134.946166, count = 4997623  
Thread #2: min latency = 25  
Thread #2: max latency = 6276454  
Thread #2: mean latency = 47095.920660, count = 5002379  
Result - 305.039503

Adaptive #1:

Thread #1: min latency = 26  
Thread #1: max latency = 920708  
Thread #1: mean latency = 272.900915, count = 4726114  
Thread #2: min latency = 26  
Thread #2: max latency = 977494  
Thread #2: mean latency = 228.563486, count = 5273888  
Lock: spins = 606, spins count = 10308144, locks count = 9658  
Result - 2.114606

Adaptive #2:

Thread #1: min latency = 26  
Thread #1: max latency = 1078730  
Thread #1: mean latency = 301.755024, count = 4531351  
Thread #2: min latency = 26  
Thread #2: max latency = 926591  
Thread #2: mean latency = 219.708379, count = 5468651  
Lock: spins = 334, spins count = 10452431, locks count = 14688  
Result - 2.168112