1. Performance Issues in 2010 PERT workshop 2010 Chris Welti
Zurich, May 28th 2010

2. Cubic TCP in Linux 2.6.29-2-amd64

3. Slow ftp performance with CUBIC

4. Changing to good old reno improves speed

5. … for ftp as well:

6. Windows 98 / XP / 2000 / Vista / 7 TCP
Windows 98 / XP / 2000: no auto-tuning
Vista / Windows 7 (compound TCP)
Receive-buffers auto-tuning
Still only 8KB for default send window
(at least that’s what you get with iperf)
However, can not be confirmed with ftp, performance there is actually better but still not as good as it could/should be.
Windows Server 2008:
Allegedly receive and send window tuning, larger defaults