Re: [gentoo-user] port bandwidth discovery

[Daniel Troeder]

On Fri, 2009-09-11 at 18:03 +0000, James wrote:
> Hello,
>
>
> Currently, I manage gentoo system that have a variety of 10 and 100 MB/s
> ethernet cards. I use lshw to distinguish the max ethernet port speed:
>
> For example:
>
> network:0 DISABLED
>                 description: Ethernet interface
>                 product: RTL-8139/8139C/8139C+
>                 vendor: Realtek Semiconductor Co., Ltd.
>                 physical id: 9
>                 bus info: pci@0000:02:09.0
>                 logical name: eth1
>                 version: 10
>                 serial: 00:48:54:62:64:fd
>                 size: 10MB/s
>                 capacity: 100MB/s
>                 width: 32 bits
>                 clock: 33MHz
>                 capabilities: pm bus_master cap_list ethernet physical tp mii
> 10bt 10bt-fd 100bt 100bt-fd autonegotiation
>
>                 configuration: autonegotiation=on broadcast=yes driver=8139too
> driverversion=0.9.28 duplex=half latency=32 link=no maxlatency=64 mingnt=32
> module=8139too multicast=yes port=MII speed=10MB/s
>
>            *-storage UNCLAIMED
>                 description: Mass storage controller
>                 product: PCI0680 Ultra ATA-133 Host Controller
>                 vendor: Silicon Image, Inc.
>                 physical id: a
>                 bus info: pci@0000:02:0a.0
>                 version: 02
>                 width: 32 bits
>                 clock: 33MHz
>                 capabilities: storage pm bus_master cap_list
>                 configuration: latency=32
>            *-network:1
>                 description: Ethernet interface
>                 product: 3c450 HomePNA [Tornado]
>                 vendor: 3Com Corporation
>                 physical id: b
>                 bus info: pci@0000:02:0b.0
>                 logical name: eth0
>                 version: 30
>                 serial: 00:50:da:61:31:1c
>                 size: 100MB/s
>                 capacity: 100MB/s
>                 width: 32 bits
>                 clock: 33MHz
>                 capabilities: pm bus_master cap_list ethernet physical tp mii
> 10bt 10bt-fd 100bt 100bt-fd autonegotiation
>
>                 configuration: autonegotiation=on broadcast=yes driver=3c59x
> duplex=full ip=192.168.2.17 latency=32 link=yes maxlatency=10 mingnt=10
> module=3c59x multicast=yes port=MII speed=100MB/s
>
>
>
> Is this reliable? What if a 10/100 card is plugged into a 10MB/s hub?
>
>
> Is there other software to discern the hardware capability and test
> actual throughput?
>
> How comfortable are you with the results you get? (reliable?)
>
>
> curiously,
> James
Some NICs work with mii-tool, others with ethtool. The latter is
generally the more modern one.

Daniel

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