Rough code to help find long running processes

time the hooks.php

<?php
function time_the_hooks( $hook = null ) {
	static $time = array( 0, '', array() );

	if ( in_array( $hook, array('gettext') ) ) { return; }

	ob_clean();
//	if ( microtime(true) - $time[0] > 0.0001 ) {
	if ( 'get_' === $time[1] ) {
		echo (int) ( ( microtime( true ) - $time[0] ) * 100000 );
		echo ' &nbsp; &nbsp; ' . $time[1];
		echo "<br>\n";
		var_export($time[2]);
		echo "<br>\n";
	}
	$time = array( microtime(true), $hook, func_get_args() );
	ob_flush();
}
add_action( 'all', 'time_the_hooks' );

ob_start();