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我正在使用 sysbench 来分析我的两个基于 NXP IMX 的设备的 CPU 性能。一个是IMX6，另一个是IMX8。我尝试在两台设备上运行以下命令。

IMX8 :sysbench --num-threads=4 --validate=on --test=cpu --cpu-max-prime=500000 --events=500 --time=120 运行

Output:

    sysbench 1.0.17 (using bundled LuaJIT 2.1.0-beta2)
    Running the test with following options:
    Number of threads: 4
    Validation checks: on.
    Initializing random number generator from current time
    Prime numbers limit: 500000
    Initializing worker threads...
    Threads started!
    CPU speed:
        events per second:    13.80
    General statistics:
        total time:                          36.2101s
        total number of events:              500
    Latency (ms):
             min:                                  279.18
             avg:                                  288.61
             max:                                  593.26
             95th percentile:                      325.98
             sum:                               144307.40
    Threads fairness:
        events (avg/stddev):           125.0000/0.71
        execution time (avg/stddev):   36.0768/0.08

IMX6: sysbench --num-threads=4 --validate=on --test=cpu --cpu-max-prime=500000 --max-requests=500 运行

Output:

        sysbench 0.4.12:  multi-threaded system evaluation benchmark
    Running the test with following options:
    Number of threads: 4
    Additional request validation enabled.
    Doing CPU performance benchmark
    Threads started!
    Done.
    Maximum prime number checked in CPU test: 500000
    Test execution summary:
        total time:                          800.5712s
        total number of events:              500
        total time taken by event execution: 3198.2560
        per-request statistics:
             min:                               6336.82ms
             avg:                               6396.51ms
             max:                               6625.35ms
             approx.  95 percentile:            6528.87ms
    Threads fairness:
        events (avg/stddev):           125.0000/0.00
        execution time (avg/stddev):   799.5640/0.65

命令结构的差异是由于 sysbench 版本的差异。我确实理解两个 CPU 在处理能力方面存在差异，但是这种 36 秒与 800 秒执行时间的差异是否有意义，或者这可能是由于 sysbench 工具在两个不同版本中的实现存在差异。

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