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Using Xperf to investigate slow I/O issues

Debuggers, Here’s another short video of the type of triage possible with Xperf, this time Bob shows us how to track down a slow I/O issue. Since I/O Manager is instrumented at IoCallDriver and IoCompleteRequest we can often use this information to diagnose Read More...
Posted Monday, August 17, 2009 1:38 PM by ntdebug | 0 Comments
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The case of the low hanging filter driver fruit

Written By Jeff Dailey: Not all our cases are crashes, leaks, or high CPU. Sometimes the problems we are faced with are purely a question of why a given application runs slow on a particular version of Windows versus another version of windows. I n other Read More...
Posted Tuesday, April 01, 2008 1:50 PM by ntdebug | 1 Comments
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LPC CASE2 – When things are not rosy

Hello, this is Roy again. In this case we will discuss a scenario where tracing a hung client thread is not possible through LPC data structures and extensions. We would rather use hints from the LPC message sent about the operation that was taking place Read More...
Posted Friday, September 14, 2007 8:38 PM by ntdebug | 1 Comments
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Server Hangs with Event ID: 2021 and 2022

Hi again! This is Tate from the CPR team and I’m going to show you how to debug a Server Service hang and the sometimes dreaded Event ID: 2021 and Event ID: 2022. There is much Voodoo about troubleshooting these two events but never fear, it’s possible Read More...
Posted Tuesday, June 19, 2007 12:19 PM by ntdebug | 3 Comments
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