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ASP.NET load time

I have an ASP.NET project, v3.5 in VB.NET that I am working on. On my home computers, it loads almost instantly when you click something, but on my work computer (which is a much faster computer) all pages take about one second to load no matter what content is generated (like on a timer or what something else) Why is this and how can I figure out why boot times are delaying on my work computer?

  • Both ASP.NET v3.5 w / VB.NET and SQL Server 2008
  • The same exact project (copied from comp to another) with the same exact database
  • Debugging is enabled for both
  • Home computer - Windows XP Pro, 3GHz Intel, 1.5 Gig RAM.
  • Work computer - Windows Vista Home, Core2 Duo 2.40 Ghz, 3 Gigs RAM
  • Both run on an ASP.NET development server
  • Fine tuning other than the computer itself

Thanks for your input.

SOLVED - The issue is related to an IPv6 issue with FireFox. I turned it off and everything is fine. Thanks everyone for your input, it is definitely a good idea to track down more serious performance issues that come in handy later, just not for this issue. Thanks!

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5 answers


Assuming you are using Firefox, it might be related to this IPv6 support issue in FF .



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Is SQL Server local in both cases?

One thing you could do is run a trace to see where the delays (if any) are in the ASP.NET process itself ...



<configuration>
    <appSettings/>
    <connectionStrings/>
    <system.web>
        <compilation debug="false" />
        <authentication mode="Windows" />
      <trace enabled ="true" pageOutput ="false" requestLimit ="20" traceMode ="SortByTime " />        
    </system.web>
</configuration>
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There are several things you can do to investigate performance issues / differences:

  • You mentioned "the same exact database". If it is the local database at home and you are hitting your home database from your work computer, this may explain the delay.
  • Use Fiddler to measure web traffic. This can help determine if this is a server or client issue.
  • Use Firebug with Firefox . Look at the NET and / or javascript profiling tab in the Console tab to determine if this is a javascript issue or a server issue.
  • Enable ASP.NET tracing in your web.config to check the timings in your server side code.
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When I work, we have firewall issues connecting to crl.microsoft.com.

Trying to add this to your hosts file:

127.0.0.1 crl.microsoft.com

Then restart IIS.

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Using Firebug slows down the loading of web pages, especially CSS rendering. Try disabling Firebug to see if that fixes your problem.

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