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Azure, IIS, ASP.NET, and LeanSentry

How-To

My first IIS guide: IISRESET, pool recycles, and site warmup

July 7, 2021 by mvolo Leave a Comment

First guide in our expert IIS guide: how to effectively reset and restart IIS services, websites, and application pools.

The difference can be minutes of downtime on your server (or worse).

See the full recommendations on How to correctly reset, restart, and recycle IIS websites.

Posted in: How-To, IIS, Uncategorized Tagged: Guides, IIS, IISRESET, Recycle application pool

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

Everything you ever wanted to know about ASP.NET request queues

July 24, 2013 by mvolo 1 Comment

Did you know there are 5 places where ASP.NET requests can become queued on an IIS server? Learn all about these queues, and how to identify the actual queued requests!

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

The 4 server logs you NEED to know to fix any IIS / ASP.NET error

July 16, 2013 by mvolo 2 Comments

Having trouble finding that IIS or ASP.NET error in production? Learn to use these 4 server logs, and you will always find the error you are looking for.

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

  • Fixing W3WP.exe memory leaks is easier than you think
  • Async await hangs in ASP.NET Core, MVC and WebAPI
  • You may be massively overpaying for your CPUs
  • New guide to IIS and asp.net hangs
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Tags

Application pool ASP.NET Async Azure Cloud CPU Guides Hangs How-To IIS IISRESET IIS thread pool LeanSentry Memory News Nuget Performance Recycle application pool TechEd Troubleshooting Warmup

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