A hotfix is available that improves the performance of CLR when a .NET Framework 3.5 SP1-based application runs in a virtualized environment

IntroductionA hotfix is available that improves the performance of common language runtime (CLR) when a .NET Framework 3.5 Service Pack 1 (SP1)-based application runs in a virtualized environment. This hotfix reduces high CPU utilization of the hypervisor in a virtualized environment. For example, the hypervisor overhead is reduced by about 5% in Windows Azure after you apply this hotfix.