Re: Via-Rhine ethernet driver problem?
From: Janne Pikkarainen
Date: Mon Mar 29 2004 - 13:42:29 EST
On Mon, 2004-03-29 at 20:24, walt wrote:
> Hi, Roger et al,
> ECS K7VTA3 motherboard with built-in ethernet chip:
> 00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 74)
> Subsystem: VIA Technologies, Inc. VT6102 [Rhine II] Embeded Ethernet Controller on VT8235
> Flags: bus master, medium devsel, latency 32, IRQ 11
> I/O ports at ec00 [size=256]
> Memory at e9041000 (32-bit, non-prefetchable) [size=256]
> Capabilities:  Power Management version 2
> The problem is terrible performance -- I noticed that NFS file transfers grind
> to a complete halt almost immediately on this machine.
> I also discovered by using 'scp' to copy files between machines that the bad
> performance is assymetrical: copying a file *to* this machine runs at about
> half-speed (5 MB/sec) whereas copying a file *from* this machine runs at
> 45 KiloB/sec, about one percent of expected.
> The reason I feel this is software and not hardware is that the same machine
> running any of the BSD's runs full-speed in both directions.
I'm trying to take some load off from actual kernel developers and doing
just a small check: is your NIC in full duplex mode while in Linux?
Please check it with mii-tool or ethtool. This sounds like a half-duplex
problem for me...
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