current JDK8 Class/Field/Method/Constructor/Executable:

warm-up:
Test1:   1 concurrent threads *    100000 loops each:       7,918.986 ms
Test1:   1 concurrent threads *    100000 loops each:       7,371.922 ms (x   0.93)
Test1:   1 concurrent threads *    100000 loops each:       7,370.244 ms (x   1.00)

Test2:   1 concurrent threads *    100000 loops each:       1,150.685 ms
Test2:   1 concurrent threads *    100000 loops each:       1,073.679 ms (x   0.93)
Test2:   1 concurrent threads *    100000 loops each:       1,065.130 ms (x   0.99)

Test3:   1 concurrent threads *  10000000 loops each:       2,025.967 ms
Test3:   1 concurrent threads *  10000000 loops each:       2,019.092 ms (x   1.00)
Test3:   1 concurrent threads *  10000000 loops each:       2,013.647 ms (x   1.00)

measure:
Test1:   1 concurrent threads *    100000 loops each:       7,290.421 ms
Test1:   2 concurrent threads *    100000 loops each:       7,465.870 ms (x   1.02)
Test1:   4 concurrent threads *    100000 loops each:       7,717.629 ms (x   1.03)
Test1:   8 concurrent threads *    100000 loops each:      13,712.065 ms (x   1.78)
Test1:  32 concurrent threads *    100000 loops each:      54,791.329 ms (x   4.00)
Test1: 128 concurrent threads *    100000 loops each:     220,675.103 ms (x   4.03)

Test2:   1 concurrent threads *    100000 loops each:       1,072.986 ms
Test2:   2 concurrent threads *    100000 loops each:       1,109.035 ms (x   1.03)
Test2:   4 concurrent threads *    100000 loops each:       1,378.384 ms (x   1.24)
Test2:   8 concurrent threads *    100000 loops each:       2,808.653 ms (x   2.04)
Test2:  32 concurrent threads *    100000 loops each:      11,420.405 ms (x   4.07)
Test2: 128 concurrent threads *    100000 loops each:      45,744.976 ms (x   4.01)

Test3:   1 concurrent threads *  10000000 loops each:       2,020.678 ms
Test3:   2 concurrent threads *  10000000 loops each:       2,310.773 ms (x   1.14)
Test3:   4 concurrent threads *  10000000 loops each:       2,955.300 ms (x   1.28)
Test3:   8 concurrent threads *  10000000 loops each:      23,585.794 ms (x   7.98)
Test3:  32 concurrent threads *  10000000 loops each:      30,947.768 ms (x   1.31)
Test3: 128 concurrent threads *  10000000 loops each:     128,051.150 ms (x   4.14)

modified Class/Field/Method/Constructor/Executable:

warm-up:
Test1:   1 concurrent threads *    100000 loops each:       2,649.407 ms
Test1:   1 concurrent threads *    100000 loops each:       1,997.154 ms (x   0.75)
Test1:   1 concurrent threads *    100000 loops each:       1,957.589 ms (x   0.98)

Test2:   1 concurrent threads *    100000 loops each:       1,132.727 ms
Test2:   1 concurrent threads *    100000 loops each:       1,078.327 ms (x   0.95)
Test2:   1 concurrent threads *    100000 loops each:       1,067.850 ms (x   0.99)

Test3:   1 concurrent threads *  10000000 loops each:       1,848.440 ms
Test3:   1 concurrent threads *  10000000 loops each:       1,834.575 ms (x   0.99)
Test3:   1 concurrent threads *  10000000 loops each:       1,842.088 ms (x   1.00)

measure:
Test1:   1 concurrent threads *    100000 loops each:       1,925.698 ms
Test1:   2 concurrent threads *    100000 loops each:       1,961.137 ms (x   1.02)
Test1:   4 concurrent threads *    100000 loops each:       2,091.670 ms (x   1.07)
Test1:   8 concurrent threads *    100000 loops each:       3,845.617 ms (x   1.84)
Test1:  32 concurrent threads *    100000 loops each:      15,192.266 ms (x   3.95)
Test1: 128 concurrent threads *    100000 loops each:      60,994.335 ms (x   4.01)

Test2:   1 concurrent threads *    100000 loops each:       1,060.509 ms
Test2:   2 concurrent threads *    100000 loops each:       1,074.310 ms (x   1.01)
Test2:   4 concurrent threads *    100000 loops each:       1,371.480 ms (x   1.28)
Test2:   8 concurrent threads *    100000 loops each:       2,834.385 ms (x   2.07)
Test2:  32 concurrent threads *    100000 loops each:      11,332.074 ms (x   4.00)
Test2: 128 concurrent threads *    100000 loops each:      45,390.626 ms (x   4.01)

Test3:   1 concurrent threads *  10000000 loops each:       1,835.447 ms
Test3:   2 concurrent threads *  10000000 loops each:       2,077.663 ms (x   1.13)
Test3:   4 concurrent threads *  10000000 loops each:       2,220.717 ms (x   1.07)
Test3:   8 concurrent threads *  10000000 loops each:       3,665.028 ms (x   1.65)
Test3:  32 concurrent threads *  10000000 loops each:      14,526.030 ms (x   3.96)
Test3: 128 concurrent threads *  10000000 loops each:      57,560.658 ms (x   3.96)