Page load time & external JS load time

Question

2.00/5 (1 vote)

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Hi,

In c# windows project, I am passing URL & want to know -
1) Time taken to load page.
Code I am using -

C#

Stopwatch sw = new Stopwatch();
   HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://www.abc.com/");
   sw.Start();
   HttpWebResponse res = (HttpWebResponse)req.GetResponse();
   sw.Stop(); 
string  timeToLoad = sw.Elapsed.TotalSeconds.ToString();

Is it correct? or any better way?

2) How to calculate the load time of external js that's been used in this page.

Thanks

Posted 7-Dec-11 20:32pm

anushripatil

Updated 9-Dec-11 2:04am

RaisKazi

v3

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Comments

Sergey Alexandrovich Kryukov 8-Dec-11 12:05pm

JavaScript? ASP.NET? Tag the question correctly, hard to see what is it about.
--SA

anushripatil 9-Dec-11 5:21am

ITS c# windows project ... as mentioned

2 solutions

Solution 1

The method given will only get the html page but won't resolve and load additional resources like javascript, css, images etc... It is also very hard to figure out the actual load time of a page when dynamic content is added with javascript. In some cases you would actually need to execute the javascript to resolve them.

There are also browser dependent implementation factors that are almost impossible to know. Different browsers and also browser versions implement different load schemes for loading some resources in-order and others concurrently. This is something which is virtually impossible to implement but has a great influence on the page load time.

The best way would be to measure it using different browsers and use a tool like YSlow[^] which can plug-in to most commonly used browsers. They also give tips on how to improve load performance by the way.

Another option would be to use browser controls of different browsers and use those to measure load performance. Instead of adding a plug-in to the browser you would be using different browsers as kind of plug-ins for your application.
http://msdn.microsoft.com/en-us/library/system.windows.forms.webbrowser.aspx[^]
http://code.google.com/p/geckofx/[^]
https://github.com/chillitom/CefSharp[^]

Good luck!

More tools:http://www.softwareqatest.com/qatweb1.html[^]

Posted 9-Dec-11 0:59am

E.F. Nijboer

Updated 9-Dec-11 1:03am

v2

Comments

Monjurul Habib 9-Dec-11 15:18pm

5!

E.F. Nijboer 10-Dec-11 9:37am

Thanks :-)

anushripatil 12-Dec-11 6:16am

Thanks for your reply.
I have 1 more solution,
1)For Time taken to load page , using browser.Navigate("MYURL") then starting the stopwatch & in documentcompleted doing stop.
2) for load time of external js
WebRequest req = HttpWebRequest.Create(url);
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
& getting resp.Headers.Get("Content-Length")
This both gives me the same result as fiddler or Yslow or Pagespeed gives.
Thanks for your help :)

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anushripatil · Accepted Answer · 2011-12-12T00:18:00

1)For Time taken to load page , using browser.Navigate("MYURL") then starting the stopwatch & in documentcompleted doing stop.
2) for load time of external js
WebRequest req = HttpWebRequest.Create(url);
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
& getting resp.Headers.Get("Content-Length")
This both gives me the same result as fiddler or firebug gives.
Thanks for your help :)