.VSPX File Extension

Developer file introduced with Visual Studio 2011; contains application performance metrics collected during a performance analysis test; generated into a report summary, which helps developers identify bottlenecks and optimize performance.

VSPX files can become very large depending on the resource requirements of an application. Therefore, developers often save analyzed reports (.VSPS files) so they don't have to regenerate the data from the source VSP file again.

NOTE: VSPX files replace .VSP files used by previous versions of Visual Studio.