Collecting Profiler Logs

When debugging issues related to coverage on .NET, we sometimes need to retrieve Profiler logs.

The Profiler is a C++ component in charge of instrumenting tests during runtime, as well as the applications under test.

The following document details the necessary steps to collect these logs.

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Collecting Profiler logs from IIS

1. Open the Registry editor (regedit.exe)

2. Navigate to your service’s key: System\CurrentControlSet\Services\WAS

3. In the “Environment” multi-string value, add the following parameters in separate lines:

   1. SL_LogLevel=6

   2. SL_LogDir=C:\SeaLights\Logs

4. Perform the previous step on System\CurrentControlSet\Services\W3SVC

5. Restart IIS iisreset /restart

Collecting Profiler logs from Windows Services

1. Open the Registry editor (regedit.exe)

2. Navigate to your service’s key: System\CurrentControlSet\Services{YourService}

3. In the “Environment” multi-string value, add the following parameters in separate lines:

   1. SL_LogLevel=6

   2. SL_LogDir=C:\SeaLights\Logs

Collecting Profiler logs from Windows Processes

1. Define the following Environment Variables in the environment from which your process is started:

   1. SL_LogLevel=6

   2. SL_LogDir=C:\SeaLights\Logs

2. This can be achieved by running the following commands in their respective shells:

   1. set SL_LogLevel=6

   2. set SL_LogDir=C:\SeaLights\Logs

Note: if your process starts from within a .bat file, a PowerShell script etc, the above environment variables need to be declared in those shells, or as Global environment variables.

Collecting Profiler logs from VSTS/Azure DevOps Test Stages

1. In the “SeaLights Start Test Execution” step:

   1. Set the “Profiler log level” to Debug

      
2. Run the build, including the test stage in question

3. After the build finished, review the logging destination:

   1. Select the “SeaLights Start Test Execution” log

   2. Towards the end of the logging output, there should be a string “Logs will be saved to”

   3. The logging files will be inside the folder denoted above