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我从 linux time 命令得到了结果。
real 119m10.626s user 133m0.952s sys 20m32.155s
从我查到的资料看来,user+sys应该比real少,但这里不是这样。有人知道为什么吗?
多个 CPU。
多线程应用程序可以在多个 CPU 内核上同时运行,(从而将 CPU 时间累积为实时的倍数)