On Friday, December 4, 2015 at 9:38:57 AM UTC-5, Richard wrote:
>
> Here what I crafted so far :
>
> <div id="timing"></div>
>
> <script type="text/javascript">
> function onLoad() {
> var now = new Date().getTime();
> var page_load_time = now - performance.timing.navigationStart;
> var network_latency = performance.timing.responseEnd -
> performance.timing.fetchStart
> var load_page_received = now - performance.timing.responseEnd
> var total_page_load = now - performance.timing.navigationStart
> $( "<p>User-perceived page loading time: " + page_load_time +
> " ms</p>" ).appendTo( "#timing" );
> $( "<p>Network latency: " + network_latency + " ms</p>"
> ).appendTo( "#timing" );
> $( "<p>Loading page once everything is recieved from server: "
> + load_page_received + " ms</p>" ).appendTo( "#timing" );
> $( "<p>Whole process of navigation and page load: " +
> total_page_load + " ms</p>" ).appendTo( "#timing" );
> }
> </script>
>
> I think this need to be in each view, because if we put it in layout it
> doesn't consider the remaining treatment associate to the controller and
> the view...
>
It won't make any difference whether this is in the layout or the view, as
web2py delivers the entire HTML body together, and these calculations
happen in the browser.
> I am not sure about Network latency in case of web2py... To me it is more
> a measure of web2py rapidity since it is associate to the time the request
> take to complete and the broswer recieve the full html content from
> web2py... I think it include network latency, but it mostly a measure of
> app performance to me...
>
I think responseStart - requestStart would be the closest to approximating
how long the server spends processing the request, though that number will
also include the amount of time it takes to send the entire request as well
as the time it takes for the initial part of the response to make it back
to the browser. It will also include time the web server (e.g., nginx)
spends processing before and after web2py does its work. If you want to
know how long web2py spends, the most accurate approach would probably
require adding some middleware.
Anthony
--
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