DisplayPageLoad.php

//This function piese of code to be placed in function.php file

function DisplayLoadTime() {
    
    // show the load results only to logged in Admin
    if (current_user_can('level_10'))
    {
        global $wpdb;
         
        // Get the total page generation time
        $totaltime = timer_stop( false, 22 );
         
        // Calculate the time spent on MySQL queries by adding up the time spent on each query
        $mysqltime = 0;
        // if there are indeed mysql queries then
        if ($wpdb->queries != null)
        foreach ( $wpdb->queries as $query )
        $mysqltime = $mysqltime + $query[1];
         
        // The time spent on PHP is the remainder
        $phptime = $totaltime - $mysqltime;
         
        // Create the percentages
        $mysqlper = number_format_i18n( $mysqltime / $totaltime * 100, 2 );
        $phpper = number_format_i18n( $phptime / $totaltime * 100, 2 );
         
        // Output the stats
        echo '<!-- Page generated ' . get_num_queries() . ' queries in ' . number_format_i18n( $totaltime, 4 ) . " seconds ( {$phpper}% PHP, {$mysqlper}% MySQL ) -->";
    }
}


// this snipped of code to be placed in anywhere you want to get displayed load results. Usually that's in the end of the footer.php
echo DisplayPageLoad();

//Don't forget to define variavle in wp-config.php - define( 'SAVEQUERIES', true );