Support Advisory: High Thread Count in Azure and Microservice .NET Applications
This document describes the support advisory for an AppDynamics product.
Summary
High thread counts are reported when instrumenting .NET applications resulting in high CPU usage. The high thread count is a result of third-party logging framework which these agents use.
Affected Software
Any Windows based .NET application instrumented using a NuGet package or Azure Site Extension.
Workaround
Turn off Profiler logging. This will not affect visibility.
To turn off the Profiler logging:
- Locate the AppDynamicsAgentLog.configfile.
- For Azure Site Extension installs, it’s located in:
D:\home\SiteExtensions\AppDynamics.WindowsAzure.SiteExtension.4.X.Release\AppDynamics\
- For NuGet installs, it’s located in the same folder as your Agent DLLs.
- For Azure Site Extension installs, it’s located in:
- Remove the following lines:
<target name="Profiler" xsi:type="File" archiveAboveSize="12000000" maxArchiveFiles="2" createDirs="true" fileName="${environment:variable=HOME}\LogFiles\AppDynamics\Profiler" layout="${longdate} ${processid} ${appdomainid} ${threadid} ${level} ${logger:shortName=True} ${message}" /><logger name="com.appdynamics.profiler.*" minlevel="Info" writeTo="Profiler" />
- Restart instrumented applications.