nanog mailing list archives
Re: Linux Router: TCP slow, UDP fast
From: Florian Weimer <fw () deneb enyo de>
Date: Sat, 14 Feb 2009 13:55:02 +0100
I'm losing the will to live with this networking headache ! Please feel free to point me at a Linux list if NANOG isn't suitable. I'm at a loss where else to ask.
The linux-net might be more appropriate indeed.
With and without shaping and over different bandwidth providers using the e1000 driver for an Intel PRO/1000 MT Dual Port Gbps NIC (82546EB) I can replicate full, expected throughput with UDP but consistently only get 300kbps - 600kbps throughput _per connection_ for outbound TCP
I've seen this behavior as the result of duplex mismatches. (The tcp settings are end system matters and do not affect how the router forwards traffic.)
Current thread:
- Linux Router: TCP slow, UDP fast Chris (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Lee (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Mikael Abrahamsson (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Florian Weimer (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Chris (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Nickola Kolev (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Chris (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Lee (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Chris (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Lee (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Chris (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Chris (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Mikael Abrahamsson (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Chris (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Lee (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Florian Weimer (Feb 14)