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POSlow ASP.NET app load times - Can I track/trace/time the whole load cycle?
 

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    <p>The ASP.NET web app project I'm currently working on is getting slower over time to re-load (In IIS or the .NET dev server). Currently it takes:</p> <ul> <li>1:28 minutes to load via an F5 debug</li> <li>41 seconds to refresh in browser, after a build (not rebuild)</li> </ul> <p>The machine's reasonably fast - A Core 2 Quad 2.40ghz, 8 gig o' RAM, running the dev machine under HyperV with 2 gig o' RAM allocated to the dev VM.</p> <p>Is there a way to trace / report on the the entire cycle of that initial load? If I could see how long it takes the basic IIS worker process to start, load DLLs, run the actual .NET code, that'd be great.</p> <p>I know I can use a profiler on the code - which hasn't turned up any ultra-slow DB connection establishment times, but I'd like to have some insight on the performance of the stuff before the actual page is processed. I can see the CPU monitor hit 100% for a bit in the middle of the process, RAM usage jump a little - but am looking for better insight to hopefully trim things a little.</p> <p>Though I didn't take any measurements at the start of the project (4 months ago), I'm entirely certain the reload was a relative breeze.</p> <p>Any help much appreciated, Programmer-who-can-only-drink-so-much-coffee-while-a-build-occurs.</p> <h2><strong>Update:</strong></h2> <p>JetBrain's <strong>dotTrace</strong> was excellent (for this instance), thanks. It had the perfect interface to start a web project, and quickly highlighted that most of the time was being taken in <strong>Application_Start()</strong> (in <em>Global.asax</em>).</p> <p>The other options wouldn't have picked this up, as:</p> <ul> <li><p>The <em>Trace</em> option only starts from PreInit, missing the Application_Start() call.</p></li> <li><p>The <em>StopWatch</em> calls would have required me to know where to look, or revert to the good old days of printf-style debugging...</p></li> <li><p><em>nprof</em> wants to target a .exe, which would miss the target area when trying to attach to fresh w3wp.exe instances...</p></li> </ul>
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