Performance Monitor/Profiler

[ashore]

All, we have a largish application that's showing poor performance in a multi-user operation, and I wonder what are the favored tools in trouble-shooting situations like this.  Anything other than Xdebug?

WRT that particular package, I've followed the installation instructions for its use in my win10/xampp testbed, but there's no sign of it in phpinfo, after a server re-start.  ( The php.ini lines I've added are at the bottom of this posting.)

Will appreciate any suggestions.

zend_extension = C:\xampp\php\ext\php_xdebug-2.6.0-7.1-vc14.dll

xdebug.remote_enable = On