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  • Blog Post: Performance Monitor Issues

    Performance counters are an essential part of any Windows programmer's diet. They have been around forever and the infrastructure is rarely updated (last time I think was in Vista). IT pros couldn't live without them. Performance and stress testing rely on them. They are a very important part of Windows...
  • Blog Post: The server rejected the session-establishment request

    Here is an interesting WCF exception you may have encountered before. In my case we were looking into a performance issue for a client. Environment This setup is pretty common. A set of load-balanced web servers is talking to a load-balanced WCF middle tier. The middle tier interacts with the...
  • Blog Post: Reflector

    There has been a lot of uproar over Red Gate's recent decision to charge for the .Net Reflector tool. As a Microsoft employee that spends a lot of time with performance and debugging tools, Reflector is essential. When Red Gate bought the rights to Reflector from Lutz Roeder, I felt that it was only...
  • Blog Post: Checking a dump file for WCF throttles

    The ServiceModel performance counters can tell you how many concurrent calls, instances, and sessions you have. In .Net 4.0, more counters were added to tell you how close you are to the throttles for each of those categories. So if you're trying to performance tune an application, those performance...
  • Blog Post: Diagnosing network card issue leads to VirtualPC

    Some may have read Mark Russinovich's blog before. If you have not, he likes to post about ways to use tools, esp. SysInternals , to diagnose strange problems in Windows. This inspired me to try my hand at diagnosing a weird issue with my home computer. A few months before my motherboard died and since...
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