nanog mailing list archives
Re: Linux Router: TCP slow, UDP fast
From: Florian Weimer <fw () deneb enyo de>
Date: Sat, 14 Feb 2009 18:55:59 +0100
I'm looking at TSO too as above, mentioned by Nickola. I'll maybe risk changing it with ethtool during a quiet network moment.
Turning off offloading might be something to try indeed. Regarding the negotation issue, can you look at the other end of the link and check what it's saying? Looking at "netstat -s" statistics at the endpoint (not the router) could be illuminating, too. I haven't got any expertise in this area, but TCP problems can often be diagnosed by looking at tcpdump/packet captures and analyzing them using tcptrace (and the special xplot variant which can plot tcptrace output).
Current thread:
- Re: Linux Router: TCP slow, UDP fast, (continued)
- 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 Florian Weimer (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 Chris (Feb 14)
- Re: Linux Router: TCP slow, UDP fast Allen Smith (Feb 14)
- Message not available
- Re: Linux Router: TCP slow, UDP fast Chris (Feb 15)
- Message not available
- Re: Linux Router: TCP slow, UDP fast Chris (Feb 15)
- Re: Linux Router: TCP slow, UDP fast Geert Bosch (Feb 15)