Re: ethernet cards

[Jeff Licquia <jeff@luci.org>]

mike packard wrote:

> I think someone might have brought this up at the last meeting, but I'm
> curious so I'll ask again.
>
> My ethernet card (it's a Linksys Tulip-based) seems to be working fine
> for awhile, then all of a sudden the card gets incredibly slow for no
> reason.  One minute I'll ping another machine in 0.5ms, then it's 2000ms.
> Ouch.  I might just be imagining this part, but it seems like it happens
> whenever I try to transfer a screenful or more of text.  Taking the device
> down with ifconfig and then bringing it right back up seems to fix the
> problem.  Anyone have any ideas?
>
> On a different machine with the same type of card I keep getting this in
> my logs:
>
> Apr  7 13:47:07 demeter kernel: eth1: Changing PNIC configuration to
>         half-duplex, CSR6 816e0000.
> Apr  7 13:49:07 demeter kernel: eth1: Changing PNIC configuration to
>         half-duplex, CSR6 812e0000.
> Apr  7 13:50:07 demeter kernel: eth1: Changing PNIC configuration to
>         half-duplex, CSR6 816e0000.
> Apr  7 13:51:07 demeter kernel: eth1: Changing PNIC configuration to
>         half-duplex, CSR6 812e0000.
> Apr  7 13:52:07 demeter kernel: eth1: Changing PNIC configuration to
>         half-duplex, CSR6 816e0000.
> Apr  7 13:55:07 demeter kernel: eth1: Changing PNIC configuration to
>         half-duplex, CSR6 812e0000.
>
> As you can see, it happens every minute or two.  Anyone know what it
> means?

I own the very card you're likely talking about (gotten at Best Buy?), and I
haven't noticed these problems.  I do know that the tulip driver in the
kernel has had some modifications to work with "Tulip-clone" cards like the
Linksys.  I run 2.2.x now, so I've got those kernel mods already; you might
need to download a patch if you're running on a 2.0.36 kernel.



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