Hi David,
Thanks for reporting the incident to Oracle.

I tried to reproduce the issue with the test case provided by you, however, my results didn’t come close to yours in case of the JDK 8u60 . I even tried with JDK 9ea versions and have attached the outputs for your reference.

Can you please provide any further pointers to replicate the issue?

Thanks,
Pallavi Sonal

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apple:pallavi jpse$ /Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/bin/java NameLookUP
1.8.0_60
Iterration 1 current elapsed time 228
Iterration 2 current elapsed time 228
Iterration 3 current elapsed time 228
Iterration 4 current elapsed time 228
Iterration 5 current elapsed time 228
Iterration 6 current elapsed time 228
Iterration 7 current elapsed time 228
Iterration 8 current elapsed time 228
Iterration 9 current elapsed time 229
Iterration 10 current elapsed time 229
Iterration 11 current elapsed time 229
Iterration 12 current elapsed time 229
Iterration 13 current elapsed time 229
Iterration 14 current elapsed time 229
Iterration 15 current elapsed time 229
Iterration 16 current elapsed time 229
Iterration 17 current elapsed time 229
Iterration 18 current elapsed time 229
Iterration 19 current elapsed time 229
Iterration 20 current elapsed time 229
Iterration 21 current elapsed time 229
Iterration 22 current elapsed time 229
Iterration 23 current elapsed time 229
Iterration 24 current elapsed time 229
Iterration 25 current elapsed time 229
Iterration 26 current elapsed time 229
Iterration 27 current elapsed time 230
Iterration 28 current elapsed time 230
Iterration 29 current elapsed time 230
Iterration 30 current elapsed time 230
Iterration 31 current elapsed time 230
Iterration 32 current elapsed time 230
Iterration 33 current elapsed time 230
Iterration 34 current elapsed time 230
Iterration 35 current elapsed time 230
Iterration 36 current elapsed time 230
Iterration 37 current elapsed time 230
Iterration 38 current elapsed time 230
Iterration 39 current elapsed time 230
Iterration 40 current elapsed time 230
Iterration 41 current elapsed time 230
Iterration 42 current elapsed time 230
Iterration 43 current elapsed time 230
Iterration 44 current elapsed time 230
Iterration 45 current elapsed time 231
Iterration 46 current elapsed time 231
Iterration 47 current elapsed time 231
Iterration 48 current elapsed time 231
Iterration 49 current elapsed time 231
Iterration 50 current elapsed time 231
Iterration 51 current elapsed time 231
Iterration 52 current elapsed time 231
Iterration 53 current elapsed time 231
Iterration 54 current elapsed time 231
Iterration 55 current elapsed time 231
Iterration 56 current elapsed time 231
Iterration 57 current elapsed time 231
Iterration 58 current elapsed time 231
Iterration 59 current elapsed time 231
Iterration 60 current elapsed time 231
Iterration 61 current elapsed time 231
Iterration 62 current elapsed time 231
Iterration 63 current elapsed time 231
Iterration 64 current elapsed time 231
Iterration 65 current elapsed time 231
Iterration 66 current elapsed time 231
Iterration 67 current elapsed time 232
Iterration 68 current elapsed time 232
Iterration 69 current elapsed time 232
Iterration 70 current elapsed time 232
Iterration 71 current elapsed time 232
Iterration 72 current elapsed time 232
Iterration 73 current elapsed time 232
Iterration 74 current elapsed time 232
Iterration 75 current elapsed time 232
Iterration 76 current elapsed time 232
Iterration 77 current elapsed time 232
Iterration 78 current elapsed time 232
Iterration 79 current elapsed time 232
Iterration 80 current elapsed time 232
Iterration 81 current elapsed time 232
Iterration 82 current elapsed time 232
Iterration 83 current elapsed time 232
Iterration 84 current elapsed time 232
Iterration 85 current elapsed time 232
Iterration 86 current elapsed time 232
Iterration 87 current elapsed time 232
Iterration 88 current elapsed time 232
Iterration 89 current elapsed time 232
Iterration 90 current elapsed time 232
Iterration 91 current elapsed time 232
Iterration 92 current elapsed time 232
Iterration 93 current elapsed time 232
Iterration 94 current elapsed time 232
Iterration 95 current elapsed time 233
Iterration 96 current elapsed time 233
Iterration 97 current elapsed time 233
Iterration 98 current elapsed time 233
Iterration 99 current elapsed time 233
Iterration 100 current elapsed time 233
Total test elapsed time :233


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apple:pallavi jpse$ java NameLookUP
1.9.0-ea
Iterration 1 current elapsed time 278
Iterration 2 current elapsed time 278
Iterration 3 current elapsed time 278
Iterration 4 current elapsed time 278
Iterration 5 current elapsed time 278
Iterration 6 current elapsed time 278
Iterration 7 current elapsed time 279
Iterration 8 current elapsed time 279
Iterration 9 current elapsed time 279
Iterration 10 current elapsed time 279
Iterration 11 current elapsed time 279
Iterration 12 current elapsed time 279
Iterration 13 current elapsed time 279
Iterration 14 current elapsed time 279
Iterration 15 current elapsed time 279
Iterration 16 current elapsed time 279
Iterration 17 current elapsed time 279
Iterration 18 current elapsed time 279
Iterration 19 current elapsed time 279
Iterration 20 current elapsed time 280
Iterration 21 current elapsed time 280
Iterration 22 current elapsed time 280
Iterration 23 current elapsed time 280
Iterration 24 current elapsed time 280
Iterration 25 current elapsed time 280
Iterration 26 current elapsed time 280
Iterration 27 current elapsed time 280
Iterration 28 current elapsed time 280
Iterration 29 current elapsed time 280
Iterration 30 current elapsed time 280
Iterration 31 current elapsed time 280
Iterration 32 current elapsed time 281
Iterration 33 current elapsed time 281
Iterration 34 current elapsed time 281
Iterration 35 current elapsed time 281
Iterration 36 current elapsed time 281
Iterration 37 current elapsed time 281
Iterration 38 current elapsed time 281
Iterration 39 current elapsed time 281
Iterration 40 current elapsed time 281
Iterration 41 current elapsed time 281
Iterration 42 current elapsed time 281
Iterration 43 current elapsed time 281
Iterration 44 current elapsed time 281
Iterration 45 current elapsed time 281
Iterration 46 current elapsed time 281
Iterration 47 current elapsed time 281
Iterration 48 current elapsed time 281
Iterration 49 current elapsed time 282
Iterration 50 current elapsed time 282
Iterration 51 current elapsed time 282
Iterration 52 current elapsed time 282
Iterration 53 current elapsed time 282
Iterration 54 current elapsed time 282
Iterration 55 current elapsed time 282
Iterration 56 current elapsed time 282
Iterration 57 current elapsed time 282
Iterration 58 current elapsed time 282
Iterration 59 current elapsed time 282
Iterration 60 current elapsed time 282
Iterration 61 current elapsed time 282
Iterration 62 current elapsed time 282
Iterration 63 current elapsed time 282
Iterration 64 current elapsed time 283
Iterration 65 current elapsed time 283
Iterration 66 current elapsed time 283
Iterration 67 current elapsed time 283
Iterration 68 current elapsed time 283
Iterration 69 current elapsed time 283
Iterration 70 current elapsed time 283
Iterration 71 current elapsed time 283
Iterration 72 current elapsed time 283
Iterration 73 current elapsed time 283
Iterration 74 current elapsed time 283
Iterration 75 current elapsed time 283
Iterration 76 current elapsed time 283
Iterration 77 current elapsed time 283
Iterration 78 current elapsed time 284
Iterration 79 current elapsed time 284
Iterration 80 current elapsed time 284
Iterration 81 current elapsed time 284
Iterration 82 current elapsed time 284
Iterration 83 current elapsed time 284
Iterration 84 current elapsed time 284
Iterration 85 current elapsed time 284
Iterration 86 current elapsed time 284
Iterration 87 current elapsed time 284
Iterration 88 current elapsed time 284
Iterration 89 current elapsed time 284
Iterration 90 current elapsed time 284
Iterration 91 current elapsed time 284
Iterration 92 current elapsed time 284
Iterration 93 current elapsed time 284
Iterration 94 current elapsed time 285
Iterration 95 current elapsed time 285
Iterration 96 current elapsed time 285
Iterration 97 current elapsed time 285
Iterration 98 current elapsed time 285
Iterration 99 current elapsed time 285
Iterration 100 current elapsed time 285
Total test elapsed time :285
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apple:pallavi jpse$ /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/bin/java NameLookUP
1.8.0_51
Iterration 1 current elapsed time 68
Iterration 2 current elapsed time 69
Iterration 3 current elapsed time 69
Iterration 4 current elapsed time 69
Iterration 5 current elapsed time 69
Iterration 6 current elapsed time 69
Iterration 7 current elapsed time 69
Iterration 8 current elapsed time 69
Iterration 9 current elapsed time 69
Iterration 10 current elapsed time 69
Iterration 11 current elapsed time 69
Iterration 12 current elapsed time 69
Iterration 13 current elapsed time 69
Iterration 14 current elapsed time 69
Iterration 15 current elapsed time 69
Iterration 16 current elapsed time 70
Iterration 17 current elapsed time 70
Iterration 18 current elapsed time 70
Iterration 19 current elapsed time 70
Iterration 20 current elapsed time 70
Iterration 21 current elapsed time 70
Iterration 22 current elapsed time 70
Iterration 23 current elapsed time 70
Iterration 24 current elapsed time 70
Iterration 25 current elapsed time 70
Iterration 26 current elapsed time 70
Iterration 27 current elapsed time 70
Iterration 28 current elapsed time 70
Iterration 29 current elapsed time 70
Iterration 30 current elapsed time 71
Iterration 31 current elapsed time 71
Iterration 32 current elapsed time 71
Iterration 33 current elapsed time 71
Iterration 34 current elapsed time 71
Iterration 35 current elapsed time 71
Iterration 36 current elapsed time 71
Iterration 37 current elapsed time 71
Iterration 38 current elapsed time 71
Iterration 39 current elapsed time 71
Iterration 40 current elapsed time 71
Iterration 41 current elapsed time 71
Iterration 42 current elapsed time 71
Iterration 43 current elapsed time 71
Iterration 44 current elapsed time 71
Iterration 45 current elapsed time 71
Iterration 46 current elapsed time 71
Iterration 47 current elapsed time 72
Iterration 48 current elapsed time 72
Iterration 49 current elapsed time 72
Iterration 50 current elapsed time 72
Iterration 51 current elapsed time 72
Iterration 52 current elapsed time 72
Iterration 53 current elapsed time 72
Iterration 54 current elapsed time 72
Iterration 55 current elapsed time 72
Iterration 56 current elapsed time 72
Iterration 57 current elapsed time 72
Iterration 58 current elapsed time 72
Iterration 59 current elapsed time 72
Iterration 60 current elapsed time 72
Iterration 61 current elapsed time 72
Iterration 62 current elapsed time 72
Iterration 63 current elapsed time 72
Iterration 64 current elapsed time 73
Iterration 65 current elapsed time 73
Iterration 66 current elapsed time 73
Iterration 67 current elapsed time 73
Iterration 68 current elapsed time 73
Iterration 69 current elapsed time 73
Iterration 70 current elapsed time 73
Iterration 71 current elapsed time 73
Iterration 72 current elapsed time 73
Iterration 73 current elapsed time 73
Iterration 74 current elapsed time 73
Iterration 75 current elapsed time 73
Iterration 76 current elapsed time 73
Iterration 77 current elapsed time 73
Iterration 78 current elapsed time 74
Iterration 79 current elapsed time 74
Iterration 80 current elapsed time 74
Iterration 81 current elapsed time 74
Iterration 82 current elapsed time 74
Iterration 83 current elapsed time 74
Iterration 84 current elapsed time 74
Iterration 85 current elapsed time 74
Iterration 86 current elapsed time 74
Iterration 87 current elapsed time 74
Iterration 88 current elapsed time 74
Iterration 89 current elapsed time 74
Iterration 90 current elapsed time 74
Iterration 91 current elapsed time 74
Iterration 92 current elapsed time 75
Iterration 93 current elapsed time 75
Iterration 94 current elapsed time 75
Iterration 95 current elapsed time 75
Iterration 96 current elapsed time 75
Iterration 97 current elapsed time 75
Iterration 98 current elapsed time 75
Iterration 99 current elapsed time 75
Iterration 100 current elapsed time 75
Total test elapsed time :75

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1.9.0-ea
Elapsed Time=233

1.8.0_60
Elapsed Time=72

1.8.0_51
Elapsed Time=47