I've noticed a very large count of dropped packets in the NICs of some of my servers.
Have you seen something like this before? Any idea on what can be the problem?
Below there's some information that could be relevant to diagnose this issue.
eth0 Link encap:Ethernet HWaddr 00:1C:C0:C0:EA:26 inet addr:192.168.100.90 Bcast:192.168.100.255 Mask:255.255.255.0 inet6 addr: fe80::21c:c0ff:fec0:26ea/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:613183643 errors:0 dropped:3745216480 overruns:0 frame:0 TX packets:591528174 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2579582564 (2.4 GiB) TX bytes:2103414697 (1.9 GiB) Interrupt:177 Base address:0x4000
02:00.0 Ethernet controller : Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 03)
Settings for eth0: Supported ports: [ FIBRE ] Supported link modes: 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: Not reported Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: FIBRE PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: pumbg Wake-on: p Current message level: 0x00000033 (51) Link detected: yes
r8169 Gigabit Ethernet driver 2.2LK-NAPI loaded eth0: RTL8169 at 0xf8824000, 00:1c:c0:c0:ea:26, IRQ 177 r8169: eth0: link up eth0: no IPv6 routers present
CPU0 CPU1 177: 13417368 1016623344 IO-APIC-level eth0
Unfortunately, there are many hits if you google the r8169 interface and "dropped packets"
One report said they fixed their issue with a newer driver from Realtek. Another match was a Redhat bug report which said it was fixed in a newer kernel. Hopefully that means it is fixed upstream as well. You could try a newer kernel from kernel.org and see if the issue is dealt with.
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