https://mirov-stroy.ru/js/cms/performance.monitor.js?17901676623ac7d050a7faf690ac4995721dbeaf3b

1/**
2 * Скрипт сбора статистики производительности страницы
3 * документация по api https://www.html5rocks.com/en/tutorials/webperformance/basics/
4 * Конфиг nginx для сохранения в лог
5 * log_format perfomance_stat '$time_local $host $http_referer $perfomance_data';
6
7   location /p_monitor/{
8	    set $perfomance_data "$arg_redirect $arg_dns $arg_connection $arg_request $arg_response $arg_domLoad $arg_domInteractive $arg_totalRequestTime";
9	    access_log /var/log/perfomance_stat.log perfomance_stat;
10	    return 200;
11   }
12 */
13
14(function (jQuery) {
15	var $ = jQuery,
16		start = 0,
17		timing = {},
18		data = {
19			redirect:0,
20			fetchStart:0,
21			dns:0,
22			connection:0,
23			request:0,
24			response:0,
25			domLoad:0,
26			domInteractive:0,
27			totalRequestTime:0
28		};
29
30	if (performance !== undefined) {
31		window.onload = function () {
32			timing = performance.timing;
33			start = timing.navigationStart;
34			data.redirect = timing.redirectEnd - timing.redirectStart;
35			data.fetchStart = timing.fetchStart - start;
36			data.dns = timing.domainLookupEnd - timing.domainLookupStart;
37			data.connection = timing.domainLookupStart - timing.connectStart;
38			data.request = timing.responseStart - timing.requestStart;
39			data.response = timing.responseEnd - timing.responseStart;
40			data.domLoad = timing.domComplete - timing.domLoading;
41			data.domInteractive = timing.domInteractive - start;
42			data.totalRequestTime = timing.domComplete-start;
43
44			$.get(
45				'/p_monitor/',
46				data,
47				'json'
48			);
49		}
50	}
51
52})(jQuery);