本文提供了3.2GHz Apple M1芯片在不同内存读取 stride 设置下的性能数据，展示了从0.00098到1024.00000的延迟时间和相应响应值。测试数据显示，随着 stride 增加，内存读取的延迟呈现一定规律，并且在特定阈值后趋于稳定。此外，还对比了3204MHz和3190MHz频率下的内存读取性能，结果显示频率提升对性能有一定影响，但整体变化不大，均在107.158至108.457的范围内波动。
测试数据：3.2GHZ Apple M1
mac-m1@mac-m1 -apple-darwin20.1.0 % ./lat_mem_rd -t 1024M 1024
"stride=1024
0.00098 0.937
0.00195 0.937
0.00293 0.937
0.00391 0.937
0.00586 0.937
0.00781 0.937
0.00977 0.937
0.01172 0.937
0.01367 0.937
0.01562 0.937
0.01758 0.937
0.01953 0.937
0.02148 0.937
0.02344 0.937
0.02539 0.937
0.02734 0.937
0.02930 0.937
0.03125 0.937
0.03516 0.937
0.03906 0.937
0.04297 0.937
0.04688 0.937
0.05078 0.937
0.05469 0.937
0.05859 0.937
0.06250 0.937
0.07031 0.937
0.07812 0.937
0.08594 0.937
0.09375 0.937
0.10156 0.937
0.10938 1.651
0.11719 0.937
0.12500 0.937
0.14062 5.467
0.15625 5.573
0.17188 5.608
0.18750 5.463
0.20312 5.507
0.21875 5.464
0.23438 5.462
0.25000 5.466
0.28125 5.616
0.31250 5.524
0.34375 5.721
0.37500 5.467
0.40625 5.619
0.43750 5.556
0.46875 5.621
0.50000 5.544
0.56250 5.604
0.62500 5.591
0.68750 5.766
0.75000 5.624
0.81250 6.041
0.87500 5.520
0.93750 5.924
1.00000 5.560
1.12500 5.957
1.25000 5.758
1.37500 5.669
1.50000 6.085
1.62500 6.067
1.75000 6.120
1.87500 6.377
2.00000 6.472
2.25000 6.424
2.50000 6.503
2.75000 6.799
3.00000 7.048
3.25000 7.076
3.50000 7.179
3.75000 7.174
4.00000 7.479
4.50000 7.602
5.00000 7.571
5.50000 7.773
6.00000 8.754
6.50000 7.626
7.00000 7.666
7.50000 9.381
8.00000 10.874
9.00000 13.525
10.00000 17.013
11.00000 21.221
12.00000 23.789
13.00000 27.227
14.00000 31.068
15.00000 31.720
16.00000 33.478
18.00000 36.457
20.00000 38.375
22.00000 41.885
24.00000 43.659
26.00000 46.997
28.00000 50.416
30.00000 55.421
32.00000 58.531
36.00000 66.515
40.00000 74.073
44.00000 79.748
48.00000 85.027
52.00000 88.521
56.00000 91.401
60.00000 93.840
64.00000 95.652
72.00000 99.242
80.00000 105.479
88.00000 105.082
96.00000 104.943
104.00000 105.214
112.00000 105.656
120.00000 106.587
128.00000 106.812
144.00000 106.381
160.00000 107.251
176.00000 106.752
192.00000 106.832
208.00000 107.551
224.00000 107.015
240.00000 106.962
256.00000 106.858
288.00000 107.625
320.00000 107.597
352.00000 107.081
384.00000 107.702
416.00000 107.063
448.00000 107.773
480.00000 107.730
512.00000 107.033
576.00000 107.151
640.00000 107.670
704.00000 107.095
768.00000 107.090
832.00000 107.167
896.00000 107.163
960.00000 107.114
1024.00000 107.158
测试2: 3204 Mhz
0.00098 0.938
0.00195 0.938
0.00293 0.938
0.00391 0.938
0.00586 0.938
0.00781 0.938
0.00977 0.937
0.01172 0.938
0.01367 0.938
0.01562 0.938
0.01758 0.938
0.01953 0.938
0.02148 0.938
0.02344 0.938
0.02539 0.938
0.02734 0.938
0.02930 0.938
0.03125 0.938
0.03516 0.938
0.03906 0.938
0.04297 0.938
0.04688 0.937
0.05078 0.938
0.05469 0.938
0.05859 0.938
0.06250 0.938
0.07031 0.937
0.07812 0.938
0.08594 0.939
0.09375 0.938
0.10156 0.938
0.10938 0.938
0.11719 0.937
0.12500 0.938
0.14062 5.467
0.15625 5.598
0.17188 5.457
0.18750 5.468
0.20312 5.851
0.21875 5.613
0.23438 5.568
0.25000 5.879
0.28125 5.883
0.31250 5.982
0.34375 5.449
0.37500 5.690
0.40625 5.565
0.43750 5.608
0.46875 5.457
0.50000 5.550
0.56250 5.935
0.62500 5.749
0.68750 5.643
0.75000 5.692
0.81250 5.737
0.87500 5.727
0.93750 5.713
1.00000 5.803
1.12500 5.573
1.25000 5.951
1.37500 6.087
1.50000 6.140
1.62500 6.235
1.75000 6.348
1.87500 6.165
2.00000 6.363
2.25000 6.462
2.50000 6.725
2.75000 6.714
3.00000 7.058
3.25000 7.166
3.50000 7.262
3.75000 7.413
4.00000 7.576
4.50000 8.908
5.00000 7.616
5.50000 7.880
6.00000 7.765
6.50000 8.552
7.00000 8.765
7.50000 9.590
8.00000 12.444
9.00000 12.948
10.00000 18.530
11.00000 19.511
12.00000 24.379
13.00000 29.598
14.00000 30.707
15.00000 34.504
16.00000 35.708
18.00000 40.669
20.00000 45.033
22.00000 49.831
24.00000 54.294
26.00000 57.162
28.00000 60.970
30.00000 65.104
32.00000 69.027
36.00000 75.014
40.00000 80.771
44.00000 85.260
48.00000 88.783
52.00000 91.489
56.00000 95.066
60.00000 97.182
64.00000 98.581
72.00000 101.382
80.00000 103.233
88.00000 104.900
96.00000 105.387
104.00000 105.588
112.00000 106.160
120.00000 106.527
128.00000 106.541
144.00000 106.828
160.00000 107.084
176.00000 107.329
192.00000 107.111
208.00000 107.256
224.00000 107.411
240.00000 107.400
256.00000 107.684
288.00000 108.067
320.00000 107.769
352.00000 107.296
384.00000 107.168
416.00000 107.303
448.00000 107.353
480.00000 107.424
512.00000 107.379
576.00000 107.130
640.00000 107.482
704.00000 107.496
768.00000 107.397
832.00000 107.434
896.00000 107.396
960.00000 107.174
1024.00000 107.457
测试3: 3190Mhz
"stride=1024
0.00098 0.943
0.00195 0.942
0.00293 0.942
0.00391 0.942
0.00586 0.942
0.00781 0.943
0.00977 0.943
0.01172 0.942
0.01367 0.943
0.01562 0.943
0.01758 0.942
0.01953 0.942
0.02148 0.943
0.02344 0.950
0.02539 0.955
0.02734 0.943
0.02930 0.944
0.03125 0.943
0.03516 0.944
0.03906 0.942
0.04297 0.946
0.04688 2.622
0.05078 0.943
0.05469 0.945
0.05859 0.943
0.06250 0.943
0.07031 0.944
0.07812 0.943
0.08594 0.943
0.09375 0.944
0.10156 0.943
0.10938 0.942
0.11719 0.943
0.12500 0.943
0.14062 5.498
0.15625 5.578
0.17188 5.501
0.18750 6.051
0.20312 5.664
0.21875 5.667
0.23438 5.592
0.25000 5.573
0.28125 5.973
0.31250 5.513
0.34375 5.620
0.37500 5.679
0.40625 5.847
0.43750 5.695
0.46875 5.573
0.50000 5.685
0.56250 5.761
0.62500 5.720
0.68750 5.711
0.75000 5.609
0.81250 5.712
0.87500 5.615
0.93750 5.758
1.00000 5.565
1.12500 5.605
1.25000 5.819
1.37500 5.810
1.50000 6.037
1.62500 5.883
1.75000 6.475
1.87500 5.932
2.00000 6.411
2.25000 6.986
2.50000 6.371
2.75000 6.603
3.00000 6.732
3.25000 7.308
3.50000 7.364
3.75000 7.300
4.00000 7.294
4.50000 7.757
5.00000 7.665
5.50000 7.946
6.00000 8.184
6.50000 9.128
7.00000 9.862
7.50000 12.163
8.00000 8.412
9.00000 14.690
10.00000 16.864
11.00000 23.852
12.00000 25.675
13.00000 26.401
14.00000 28.052
15.00000 38.675
16.00000 35.689
18.00000 42.426
20.00000 46.217
22.00000 53.216
24.00000 51.559
26.00000 60.856
28.00000 64.676
30.00000 66.258
32.00000 70.535
36.00000 79.221
40.00000 82.190
44.00000 87.758
48.00000 93.215
52.00000 93.392
56.00000 100.923
60.00000 102.017
64.00000 102.710
72.00000 104.018
80.00000 104.830
88.00000 107.303
96.00000 106.904
104.00000 107.191
112.00000 107.291
120.00000 107.665
128.00000 107.401
144.00000 108.101
160.00000 107.761
176.00000 107.982
192.00000 107.950
208.00000 108.188
224.00000 107.856
240.00000 107.956
256.00000 107.906
288.00000 108.020
320.00000 107.798
352.00000 107.958
384.00000 108.080
416.00000 108.010
448.00000 108.038
480.00000 108.104
512.00000 108.103
576.00000 108.174
640.00000 108.113
704.00000 108.120
768.00000 108.901
832.00000 107.541
896.00000 108.400
960.00000 107.457
1024.00000 108.345
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