Interesting TCP gotchas
Mandatory roundtrips
- TCP three-way handshake
- get request, data return
- new connections for each inlined image (parallelize)
- lots of extra syn or syn/ack packets
Slow-start penalties
- can show only affects fast networks, not modems
Lots of TCP connections to server
- spatial/processing overhead in server (TCP stack)
- many protocol control block (PCB) TIME_WAIT entries
- unfairness because of loss of congestion control info