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Linux Router: TCP slow, UDP fast
Thanks loads for the quick replies. I'll try and respond individually.
Lee > I recently disabled tcp_window_scaling and it didn't solve the
problem. I don't know enough about it. Should I enable it again ? Settings
differing from defaults are copied in my first post.
Mike > Strangely I'm not seeing any errors on either the ingress or egress
RX packets:3371200609 errors:0 dropped:0 overruns:0 frame:0
TX packets:3412500706 errors:0 dropped:0 overruns:0 carrier:0
The only errors I see anywhere are similar on both NICs. Both connect to the
same model of switch with the same default config:
and it may be worth noting that flow control is on. Are these a reasonable
level of pause frames to be seeing ? They seem to be higher on non-routing
Total bytes (TX)2466202288Unicast packets (TX)3436389971Multicast packets
(TX)213310Broadcast packets (TX)4952902Single Collision Frames (TX)0Late
Collisions (TX)0Excessive Collisions (TX)0Transmitted Pause Frames (TX)27806
Florian > They're running without obvious errors. Auto Neg has taken 1Gbps,
Full. Can Auto Neg cause these symptoms do you think ?