Messages in this thread | | | Date | Tue, 22 May 2001 14:18:28 -0700 | From | Ion Badulescu <> | Subject | Re: Xircom RealPort versus 3COM 3C3FEM656C |
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On Tue, 22 May 2001 20:10:41 +0100 (BST), Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> Before you give up on the xircom thing, try the -ac kernel and set the box > up to use xircom_cb not xircom_tulip_cb > > That might help a lot
It doesn't, it still performs poorly with any of the three available drivers -- xircom_cb, xircom_tulip_cb, and tulip_cb (from the pcmcia package):
* Rx gets only about 1.8Mbit/s on a 100Base-TX network with any of the three * Tx gets 80+Mb/s with xircom_tulip_cb and tulip_cb, and less than 30Mb/s with xircom_cb.
And no, promisc mode played no role in this experiment, because my test network is switched and otherwise very quiet.
Windows drivers handle both Rx and Tx at full speed.
I have this feeling that we're handling the card in some (tulip) compat mode, which severely cripples performance. It's hard to tell, without docs...
Ion
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