[Chugalug] GigE NICs

Matt Keys mk6032 at yahoo.com
Sun Feb 17 05:56:50 UTC 2013


That sucks for you but the good news is Intel nics aren't that 
expensive. :) I've ran multiple iscsi throughput tests on generally 
available onboard/integrated nics and most results are bad. Go with a 
good brand nic, such as Intel, and you'll be g2g.

Regards,
Matt

On 02/17/2013 12:36 AM, John Aldrich wrote:
> On Sat February 16 2013 11:50:13 PM Matt Keys wrote:
>> $ sudo lshw -c net
>>     *-network
>>          description: Ethernet interface
>>          product: RTL8111/8168B PCI Express Gigabit Ethernet controller
>>          vendor: Realtek Semiconductor Co., Ltd.
>>          physical id: 0
>>          bus info: pci at 0000:03:00.0
>>          logical name: eth0
>>          version: 03
>>          serial: 90:fb:a6:ef:d0:ad
>>          size: 1Gbit/s
>>          capacity: 1Gbit/s
>>          width: 64 bits
>>          clock: 33MHz
>>          capabilities: pm msi pciexpress msix vpd bus_master cap_list rom
>> ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd
>> autonegotiation
>>          configuration: autonegotiation=on broadcast=yes driver=r8169
>> driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168d-2.fw
>> ip=192.168.1.18 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
>>          resources: irq:43 ioport:ce00(size=256) memory:fdbff000-fdbfffff
>> memory:fdbf8000-fdbfbfff memory:fdb00000-fdb1ffff
>>
> Even after installing lshw, typing "lshw -c net" didn't get me anything, so I
> ran it as follows: "lshw | grep net" and came up with the following:
> [john at slave1 ~]$ sudo lshw | grep net
>            description: Ethernet interface
>            product: MCP61 Ethernet
>            capabilities: bridge
>
> Doesn't tell me a whole lot. :(
>
> That being said, I was looking around for information on the MCP61 Ethernet
> and found mention of another tool, ethtool, which I ran against ETH0 and came
> up with this:
> Settings for eth0:
>          Supported ports: [ MII ]
>          Supported link modes:   10baseT/Half 10baseT/Full
>                                  100baseT/Half 100baseT/Full
>          Supported pause frame use: No
>          Supports auto-negotiation: Yes
>          Advertised link modes:  10baseT/Half 10baseT/Full
>                                  100baseT/Half 100baseT/Full
>          Advertised pause frame use: No
>          Advertised auto-negotiation: Yes
>          Speed: 100Mb/s
>          Duplex: Full
>          Port: MII
>          PHYAD: 1
>          Transceiver: external
>          Auto-negotiation: on
>          Supports Wake-on: g
>          Wake-on: d
>          Link detected: yes
> So, it appears that this on-board NIC can only do 100 Mbit. :(
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