PPC440GX ethernet oddities
Jeff Mock
jeff at mock.com
Tue Nov 28 09:19:33 EST 2006
Eugene Surovegin wrote:
> On Mon, Nov 27, 2006 at 09:34:59AM -0800, Jeff Mock wrote:
>> # ./ethtool -S eth0
>> NIC statistics:
>> rx_packets: 683430611
>> rx_bytes: 45405076316
>> tx_packets: 1331225622
>> tx_bytes: 2005276384145
>> rx_packets_csum: 683428670
>> tx_packets_csum: 1331224150
>> tx_undo: 0
>> rx_dropped_stack: 80
>> rx_dropped_oom: 0
>> rx_dropped_error: 0
>> [lots more 0's...]
>>
>> The number of checksum errors seems okay and doesn't really change when
>> I plug in the second network connection, but the ring buffer usage still
>> increases dramatically.
>
> Stats look OK. BTW, tx/rx_packets_csum is not a number of checksum
> errors, that's a number of packets where driver used hw checksum
> acceleration :).
>
Ah, silly me. Can you tell me where I can find the number of received
packets with bad ethernet checksums? I'm still thinking that I might
have a little hardware problem that is increasing the bit error rate
when I use both ports, ultimately increasing my buffer utilization.
thanks,
jeff
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