slow data transfer over nfs ... is it fedora?
Bob Arendt
rda at rincon.com
Fri Dec 5 21:49:49 UTC 2003
Harry Putnam wrote:
> # mii-tool
> root # mii-tool
> eth0: negotiated 100baseTx-HD, link ok
> eth1: no link
>
> # ethtool eth0
> Settings for eth0:
> Supported ports: [ TP MII ]
> Supported link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> Supports auto-negotiation: Yes
> Advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> Advertised auto-negotiation: Yes
> Speed: 100Mb/s
> Duplex: Half
> Port: Twisted Pair
> PHYAD: 1
> Transceiver: internal
> Auto-negotiation: on
> Supports Wake-on: puag
> Wake-on: g
> Link detected: yes
>
The "-HD" = Half duplex = kiss of death for speed. This usually
indicates either a bad cable or an incorrectly configured network
box. We'd had problems with DEC/Compaq AlphaStations in this regard.
The solution was generally to configure your network box and/or workstation
to 100baseT/Full and *don't* let it autonegotiate.
Hope this helps
-Bob Arendt
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