我的intel82544千兆电口网卡也有类似问题。2.6.9的内核。外接100M交换机。
eth1 Link encap:Ethernet HWaddr 00:10

C:76:78:37
inet addr:192.168.100.1 Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::210:dcff:fe76:7837/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11113882 errors:911 dropped:1822 overruns:911 frame:0
TX packets:11708850 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3561917028 (3.3 GiB) TX bytes:2825257092 (2.6 GiB)
Base address:0xa000 Memory:e4000000-e4020000
===========================================================
dmesg:
===========================================================
NETDEV WATCHDOG: eth1: transmit timed out
e1000: eth1: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex
NETDEV WATCHDOG: eth1: transmit timed out
e1000: eth1: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex
NETDEV WATCHDOG: eth1: transmit timed out
e1000: eth1: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex
NETDEV WATCHDOG: eth1: transmit timed out
e1000: eth1: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex
NETDEV WATCHDOG: eth1: transmit timed out
e1000: eth1: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex
NETDEV WATCHDOG: eth1: transmit timed out
我的系统负载并不大。可能是千兆驱动有问题吧。
我的千兆光纤网卡就一点问题也没有。