Pipelining and Output Buffering

Pipelining allows multiple outstanding requests, reducing round trips
- Responses are still serialized - difference is timing
Buffering packs TCPs segments better
- Reduces number of packets (and server context switches) required for same "work"
When to Flush?
- If the data in the output buffer exceeds 1K
- If the data is buffered longer than N ms
- If the application explicitly requests it
Experimenting with Nagle’s algorithm
- Turned on/off in both client and server
- No differences seen (due to good buffering???)