On Mon, 22 Nov 2004 15:38:16 -0800
Harry Edmon <harry@xxxxxxxxxxxxxxxxxxxx> wrote:
Tried them all - none of them helped. Use "ntop" I can see that my throughput on the Intel gigabit ethernet interface on the system maxes out at 15.2 Mbps with 2.6.9. With 2.6.7 it made it to 35 Mbps.
Does anyone have any other suggestions as to what to look for to diagnose this problem?
Well, before the TSO changes, if TSO was enabled then TCP would not obey slow
start or do congestion control properly. Did you increase the TCP send/receive
buffers (sysctl's net.ipv4.tcp_rmem and net.ipv4.tcp_wmem)? You may just
be window limited. Also, 2.6.9 has TCP bugs with TSO that can cause panic's.
These have been fixed in 2.6.10-rc2.