is where you can find the profiling info generated by xdebug
xdebug.profiler_output_dir = /var/tmp
profile the page you visited when the XDEBUG_PROFILE variable is present in cookie/POST/GET
xdebug.profiler_enable_trigger=1
install qcachegrind - this will be used for viewing the profiling information
brew install qcachegrind
open the profile viewer
qcachegrind
open one of the output files in /var/tmp/cachegrind.out.*