Mike Volodarsky's Blog

Azure, IIS, ASP.NET, and LeanSentry

Month: June 2015

When CPU profiling goes bad in production

June 4, 2015 by mvolo 3 Comments

This week’s How-To: recover from a failed CPU profiler that has frozen your process in production. Plus a trick to temporarily suspend/resume any process you don’t want to be running.

Posted in: How-To, Troubleshooting Tagged: ASP.NET, How-To, IIS, Troubleshooting

How-To: Remove slow Azure instances

June 3, 2015 by mvolo 2 Comments

In case you missed it, LeanSentry How-To last week was about removing slow or unhealthy Azure instances from your cloud service. It’s a relatively new technique made possible by a new Azure API, that lets you remove a specific instance of your choosing. Direct link: LeanSentry How-To: Remove unhealthy or slow Azure instances Reasons to … [Read more…]

Posted in: .NET, Azure, How-To, IIS Tagged: ASP.NET, Azure, How-To, IIS, LeanSentry

About me

I am the lead developer for LeanSentry, an expert application monitoring service for .NET web apps.

Before that, I used to work for Microsoft where I helped build the IIS 7.0 and ASP.NET products.

Expert IIS and .NET performance guides

  • How to reset and restart IIS correctly.
  • Get the best IIS application pool availability with warmup.
  • Turn on richer IIS logs for IIS log analysis on steroids.
  • Fix 503 queue full errors and improve RPS by tuning the IIS thread pool.
  • Tune high CPU usage in w3wp.exe.
  • Fix .NET memory leaks and tune w3wp memory usage.
  • Fix IIS and ASP.NET hangs, and async await hangs in ASP.NET core, MVC and WebAPI.

Recent Posts

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  • Async await hangs in ASP.NET Core, MVC and WebAPI
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  • New guide to IIS and asp.net hangs
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