I have an ASP.NET 4.0 Web Service running on IIS 6.0. I am trying to locate the appropriate Performance Counter to track 503 responses. I have limited "Web site connections" to 1 for testing purposes and have verified in my client that I am receiving a 503 – Server Unavailable.
According to Microsoft's documentation the ASP.NET\Requests Rejected counter specifically tracks 503 responses. I am not seeing this at all.
I have tried the following counters (all with scale set to 1 in the Performance graph) and none of them show any activity:
ASP.NET v4.0.30319\Requests Rejected
ASP.NET Apps v4.0.30319\Requests Rejected
Active Server Pages\Requests Rejected
ASP.NET Applications\Requests Rejected
I have verified that other counters are tracking my web service activity properly (Web Service\Bytes Total/sec, ASP.NET Applications\Request Execution Time, etc)