simple profiler

autoprepend.php

<?php
// include in bootsrap or add to auto_prepend_file
// tideways extension required (see: https://tideways.io/profiler/docs/setup/installation)

(function () {
    if (!function_exists('tideways_enable')
        ||!isset($_SERVER['HTTP_ACCEPT'])
        || strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false
    ) {
        return;
    }
    ini_set('tideways.max_spans',  10000);
    tideways_enable(TIDEWAYS_FLAGS_NO_HIERACHICAL );
    tideways_span_watch('Magento\Framework\App\Bootstrap::createApplication');
    tideways_span_watch('Magento\Framework\View\Element\Template::fetchView', 'view');
    tideways_span_watch('Magento\Framework\View\Page\Config::build', 'view');
    tideways_span_callback('Magento\Framework\ObjectManager\Factory\AbstractFactory::createObject', function($context) {
        $id =  tideways_span_create('om');
        tideways_span_annotate($id, ["class" => $context["args"][0]]);
        return $id;
    });
    tideways_span_watch('Zend_Cache_Core::load');

    //tideways_span_watch('Composer\Autoload\ClassLoader::loadClass');
    tideways_span_watch('Magento\Eav\Model\Config::getAttribute');
    tideways_span_watch('Magento\Eav\Model\Entity\Collection\AbstractCollection::load');
    tideways_span_watch('Magento\Framework\Data\Collection\AbstractDb::load');
    tideways_span_watch('Magento\Framework\App\FrontController::dispatch');

    tideways_span_callback('file_get_contents', function($context) {
        $id =  tideways_span_create('io');
        tideways_span_annotate($id, ["file" => $context["args"][0]]);
        return $id;
    });

    tideways_span_callback('fopen', function($context) {
        $id =  tideways_span_create('io');
        tideways_span_annotate($id, ["file" => $context["args"][0]]);
        return $id;
    });

    register_shutdown_function(function () {
        tideways_disable();

        $spans = tideways_get_spans();
        $app = $spans[0];
        $end = $app['e'][0];

        echo "
<div style='height:  31vh '></div>
<div class='profiller'> 
        <style>
          .profiller { padding:5px; border: 2px solid #88a; background: #FFF;  width: 100%; height: 30vh; overflow: scroll; position: fixed; z-index: 5000; bottom: 0px;}
          .profiller > .row { height: 15px; font-size: 12px; position: relative;     border-bottom: 1px dotted rgba(64,64,64,0.1); }
          .profiller > .row:hover { background-color: rgba(180,180,220, 0.2); color: #000;} 
          .profiller > .row  > .annotation { display: inline-block; width: 25%; height: 15px; overflow: hidden; z-index: 5; top: 0; vertical-align: text-top; }
          .row-head span{display: inline-block; width: 3%; text-align: right}
        </style>
        ";
        $i = 0;
        echo "<div class='row row-head'>";

        echo "<div class='annotation'> </div>";
        echo "<span>t(ms)</span>";
        echo "<span>n(#)</span>";
        echo '</div>';
        foreach ($spans as $s => $span) {
            $total = 0;
            foreach ($span['b'] as $p => $b) {
                $total += ($span['e'][$p] - $b);
            }
            if ($total < 1100) {
                continue;
            }

            if (!isset($span['a'])) {
                $span['a'] = array();
            }
            $annotations = htmlspecialchars(str_replace(['{', '}', '"', ',', '\\\\', '\\/'], ['', '', '', "\n", '\\', '/'], json_encode($span['a'])));
            echo "<div class='row row-{$span['n']}' style=''  title='$annotations' >";

            echo "<div class='annotation'>",
            substr($annotations, 0, 60), "</div>";
            echo "<span style='display: inline-block; width: 3%; text-align: right'>",
            sprintf(" %.0F", $total / 1000), "</span>";
            echo "<span style='display: inline-block; width: 3%; text-align: right'>", count($span['b']), "</span>";

            echo "<span style='display: inline-block; width: 3%; text-align: right'>", htmlspecialchars($span['n']), " </span>";
            foreach ($span['b'] as $p => $b) {
                echo "<b style=' text-align: center; display:block; position: absolute; height: 15px;  top:0;" .
                    "left: " . sprintf("%.3F", 40 + $b * 60 / $end) . "%;" .
                    "width: " . sprintf("%.3F", ($span['e'][$p] - $b) * 60 / $end) . "%;" .
                    "background: hsl(" . ($i * 345 % 255) . ", 50%, 55%)'
                    title='" . sprintf("%.0F", ($span['e'][$p] - $b) / 1000) . "ms'
                    > &nbsp;</b>";
            }
            $i++;
            echo "</div>";
        }
        echo "</div>";

    });
})();