Dtrace broken under El Capitan

One of the tools that I use quite a lot in debugging in 'dtrace' and the various utilities that use it.  e.g. open snoop, iotop and a few that I wrote myself.

With the GA of El Capitan, any utility that resides in a system directory cannot be traced by dtrace, which is a bit of a problem.  I was wanting to see what open system calls the Photos app was using and came across this.

I know I could have used some other Mac utilities (fs_usage, sc_usage etc.) but I'm showing my Solaris roots here and still wanted to use dtrace.

Fortunately there looks to be a way of enabling dtrace:

1. Reboot the mac
2. Hold ⌘R during reboot
3. From the Utilities menu, run Terminal
4. Enter the following command

csrutil enable --without dtrace

Note, that when doing so I got the following warning:

This is an unsupported configuration, likely to break in the future and leave your machine in an unknown state.

I'll live with it just now.

Also changed the boot delay on the VMware machine by bios.bootdelay = 20000 in the vmx file.