Performance evaluation

  VMMC minimizes OS involvement in common communication datapaths. However, some OS involvement is still necessary for tasks like communication setup and virtual-to-physical address translation. Therefore, we want to evaluate the impact of the operating system on the three distinct aspects of user-level communication:

• OS impact on the communication setup performance
• OS impact on the data transfer performance
• OS impact on the control transfer performance

• Methodology
• Platform
• Impact on Communication Setup
• Impact on Data Transfer
  • Common case
  • UTLB overheads
  • Applications
• Impact on Control Transfer