dtrace in Go
see godtrace
If you got the same error as follows:
$ sudo dtrace -n 'io:::{}'
dtrace: invalid probe specifier io:::{}: probe description io::: does not match any probesThen you need to disable rootless for dtrace.
Hold ⌘R during reboot
From the Utilities menu, run Terminal
csrutil enable --without dtrace
reboot
http://dev.lrem.net/tcldtrace/wiki/LibDtrace