lmbench3 lat_mem_rd的测试结果记录

默认情况下，L1 cache/L2cache都打开：

/ # lat_mem_rd 128M

"stride=128
0.00049 4.019
0.00098 4.019
0.00195 4.019
0.00293 4.019
0.00391 4.019
0.00586 4.019
0.00781 4.019
0.00977 4.019
0.01172 4.019
0.01367 4.020
0.01562 4.020
0.01758 4.020
0.01953 4.020
0.02148 9.008
0.02344 20.730
0.02539 12.417
0.02734 4.020
0.02930 4.021
0.03125 21.667
0.03516 23.882
0.03906 21.904
0.04297 23.480
0.04688 18.924
0.05078 22.588
0.05469 23.941
0.05859 24.963
0.06250 26.212
0.07031 27.386
0.07812 28.120
0.08594 28.982
0.09375 29.861
0.10156 30.135
0.10938 30.310
0.11719 30.531
0.12500 30.780
0.14062 31.004
0.15625 31.119
0.17188 31.200
0.18750 31.249
0.20312 31.286
0.21875 31.314
0.23438 31.327
0.25000 31.338
0.28125 31.351
0.31250 31.362
0.34375 31.368
0.37500 31.370
0.40625 31.377
0.43750 31.377
0.46875 31.380
0.50000 31.382
0.56250 31.479
0.62500 31.540
0.68750 31.652
0.75000 32.274
0.81250 35.436
0.87500 36.383
0.93750 42.514
1.00000 45.084
1.12500 52.494
1.25000 64.850
1.37500 74.712
1.50000 82.181
1.62500 88.431
1.75000 92.841
1.87500 96.249
2.00000 98.659
2.25000 101.371
2.50000 103.632
2.75000 105.671
3.00000 107.093
3.25000 108.587
3.50000 109.755
3.75000 111.288
4.00000 112.801
4.50000 114.882
5.00000 115.334
5.50000 115.685
6.00000 115.992
6.50000 116.182
7.00000 116.031
7.50000 116.274
8.00000 116.287
9.00000 116.282
10.00000 116.294
11.00000 116.267
12.00000 116.289
13.00000 116.310
14.00000 116.274
15.00000 116.278
16.00000 116.271
18.00000 116.262
20.00000 116.258
22.00000 116.260
24.00000 116.255
26.00000 116.281
28.00000 116.241
30.00000 116.251
32.00000 116.260
36.00000 116.238
40.00000 116.285
44.00000 116.276
48.00000 116.242
52.00000 116.218
56.00000 116.221
60.00000 116.289
64.00000 116.269
72.00000 116.246
80.00000 116.208
88.00000 116.209
96.00000 116.193
104.00000 116.304
112.00000 116.298
120.00000 116.266
128.00000 116.270
/ #


关闭所有cache：
/ # lat_mem_rd 128M
"stride=128
0.00049 109.911
0.00098 109.709
0.00195 111.765
0.00293 112.165
0.00391 112.048
0.00586 110.624
0.00781 114.750
0.00977 110.518
0.01172 110.556
0.01367 116.171
0.01562 115.120
0.01758 111.201
0.01953 113.063
0.02148 114.558
0.02344 132.662
0.02539 114.155
0.02734 113.189
0.02930 113.060
0.03125 112.799
0.03516 113.035
0.03906 113.475
0.04297 112.802
0.04688 113.169
0.05078 112.545
0.05469 112.878
0.05859 114.281
0.06250 121.263
0.07031 121.540
0.07812 114.296
0.08594 113.699
0.09375 113.657
0.10156 113.555
0.10938 112.499
0.11719 112.890
0.12500 113.001
0.14062 113.203
0.15625 113.141
0.17188 113.384
0.18750 112.882
0.20312 112.978
0.21875 112.871
0.23438 112.826
0.25000 112.919
0.28125 112.370
0.31250 112.475
0.34375 112.646
0.37500 112.572
0.40625 112.695
0.43750 112.688
0.46875 112.644
0.50000 112.786
0.56250 113.817
0.62500 115.130
0.68750 116.574
0.75000 117.552
0.81250 118.690
0.87500 118.334
0.93750 118.288
1.00000 118.415
1.12500 120.104
1.25000 119.227
1.37500 119.414
1.50000 119.464
1.62500 119.577
1.75000 119.100
1.87500 121.070
2.00000 118.987
2.25000 119.319
2.50000 119.379
2.75000 120.170
3.00000 119.167
3.25000 120.169
3.50000 119.651
3.75000 120.127
4.00000 119.604
4.50000 120.107
5.00000 119.829
5.50000 120.386
6.00000 119.336
6.50000 120.711
7.00000 120.182
7.50000 120.476
8.00000 120.630
9.00000 119.996
10.00000 124.031
11.00000 120.023
12.00000 119.638
13.00000 119.930
14.00000 120.321
15.00000 120.122
16.00000 120.036
18.00000 119.518
20.00000 119.642
22.00000 119.444
24.00000 119.628
26.00000 119.658
28.00000 120.138
30.00000 119.765
32.00000 119.570
36.00000 119.857
40.00000 119.992
44.00000 119.638
48.00000 119.833
52.00000 120.424
56.00000 120.107
60.00000 120.193
64.00000 120.128
72.00000 120.103
80.00000 120.416
88.00000 119.859
96.00000 119.977
104.00000 120.318
112.00000 120.071
120.00000 119.952
128.00000 119.572
/ #


关闭L2cache：
/ # lat_mem_rd 128M
"stride=128
0.00049 4.022
0.00098 4.022
0.00195 4.022
0.00293 4.021
0.00391 4.022
0.00586 4.022
0.00781 4.021
0.00977 4.022
0.01172 4.022
0.01367 4.021
0.01562 4.022
0.01758 4.022
0.01953 4.025
0.02148 4.022
0.02344 4.025
0.02539 4.024
0.02734 4.026
0.02930 4.026
0.03125 29.903
0.03516 27.048
0.03906 42.457
0.04297 53.114
0.04688 66.418
0.05078 75.082
0.05469 80.378
0.05859 81.039
0.06250 89.496
0.07031 94.832
0.07812 97.520
0.08594 100.212
0.09375 102.207
0.10156 103.973
0.10938 104.760
0.11719 105.497
0.12500 106.109
0.14062 106.759
0.15625 107.302
0.17188 107.493
0.18750 107.635
0.20312 107.722
0.21875 107.692
0.23438 107.730
0.25000 107.798
0.28125 107.727
0.31250 107.686
0.34375 107.650
0.37500 107.657
0.40625 107.591
0.43750 107.608
0.46875 107.614
0.50000 107.642
0.56250 107.895
0.62500 108.019
0.68750 108.249
0.75000 108.280
0.81250 108.303
0.87500 108.359
0.93750 108.311
1.00000 108.332
1.12500 108.370
1.25000 108.321
1.37500 108.424
1.50000 108.378
1.62500 108.358
1.75000 108.385
1.87500 108.390
2.00000 108.352
2.25000 108.392
2.50000 108.360
2.75000 108.380
3.00000 108.404
3.25000 108.378
3.50000 108.389
3.75000 108.388
4.00000 108.393
4.50000 108.358
5.00000 108.406
5.50000 108.386
6.00000 108.387
6.50000 108.402
7.00000 108.392
7.50000 108.367
8.00000 108.387
9.00000 108.340
10.00000 108.322
11.00000 108.275
12.00000 108.267
13.00000 108.272
14.00000 108.321
15.00000 108.312
16.00000 108.243
18.00000 108.296
20.00000 108.326
22.00000 108.343
24.00000 108.397
26.00000 108.380
28.00000 108.389
30.00000 108.392
32.00000 108.381
36.00000 108.470
40.00000 108.502
44.00000 108.455
48.00000 108.477
52.00000 108.477
56.00000 108.460
60.00000 108.485
64.00000 108.418
72.00000 108.509
80.00000 108.481
88.00000 108.493
96.00000 108.475
104.00000 108.484
112.00000 108.467
120.00000 108.453

128.00000 108.462

关闭不同cache影响也不一样。