因为macOS默认打开System Integrity Protection，所以无法使用DTrace：

$ dtrace -l
dtrace: system integrity protection is on, some features will not be available
dtrace: failed to initialize dtrace: DTrace requires additional privileges

所以如果要使用DTrace，需要关闭System Integrity Protection功能：参考Disabling and Enabling System Integrity Protection。需要注意的是，进入Recovery mode.在苹果处理器和英特尔处理器是不一样的。在关闭System Integrity Protection后，DTrace就可以使用了：

$ dtrace -l
dtrace: failed to initialize dtrace: DTrace requires additional privileges
$ sudo dtrace -l | more
Password:
   ID   PROVIDER            MODULE                          FUNCTION NAME
    1     dtrace                                                     BEGIN
    2     dtrace                                                     END
    3     dtrace                                                     ERROR
    ......