These white papers describe the performance and capacity impact of specific feature sets included in SharePoint Server 2010. These white papers include information about the performance and capacity characteristics of the feature and how it was tested, including:

  • Test farm characteristics
  • Test results
  • Recommendations
  • Troubleshooting performance and scalability

http://www.microsoft.com/downloads/details.aspx?FamilyID=fd1eac86-ad47-4865-9378-80040d08ac55&displaylang=en