Table of Contents
Fast-Path Data Movement for IP Transports A Tour of the Alternatives
The Big Questions
Focusing on the Issue
The Copy Problem
What is IETF’s Role?
“Zero-Copy” Alternatives
Page Flipping: the Basics
Page Flipping with Small MTUs
Page Flipping with a ULP
Page Flipping: Pros and Cons
Option 2: Scatter/Gather
Scatter/Gather: Pros and Cons
Option 3: Direct Data Placement
DDP: Pros and Cons
DDP: Examples
Remote Direct Memory Access
The Case for RDMA over IP
The Case Against
Summary/Conclusion
RDMA Issues
SCTP?
Duke Experiments
CPU Overhead for TCP/IP
Trapeze/L7 TCP/IP Results
Netperf/TCP at 2 Gb/s
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