Date: Tue, 14 Sep 1999 09:04:02 +0200 From: Andre Albsmeier <andre.albsmeier@mchp.siemens.de> To: Scott Mitchell <s.mitchell@computer.org> Cc: Andre Albsmeier <andre.albsmeier@mchp.siemens.de>, FreeBSD-mobile@FreeBSD.ORG Subject: Re: Recommendation for a GOOD 100 MBit Ethernet card wanted Message-ID: <19990914090402.A63360@internal> In-Reply-To: <19990913003148.29772@lungfish.freeserve.co.uk> References: <19990905192333.A34635@internal> <Pine.BSF.4.10.9909071535540.55118-100000@resnet.uoregon.edu> <19990908064231.A1059@internal> <19990913003148.29772@lungfish.freeserve.co.uk>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, 13-Sep-1999 at 00:31:48 +0100, Scott Mitchell wrote: > On Wed, Sep 08, 1999 at 06:42:31AM +0200, Andre Albsmeier wrote: > > On Tue, 07-Sep-1999 at 15:36:03 -0700, Doug White wrote: > > > On Sun, 5 Sep 1999, Andre Albsmeier wrote: > > > > > > > I am looking for a 100MBit Ethernet card for use with 3.2-STABLE which > > > > does perform better than the "Intel EtherExpress(TM) PRO/100 PC C". > > > > Currently, I am using this one with the xe driver, but performance is > > > > rather bad (about 1.2 MBytes/sec). According to if_xe.c, this is due > > > > to the way the card is handled by the driver: > > > > > > > > * Note that the crappy PIO used to get packets on and off the card means that > > > > * you will spend a lot of time in this routine -- I can get my P150 to spend > > > > * 90% of its time servicing interrupts if I really hammer the network. Could > > > > * fix this, but then you'd start dropping/losing packets. The moral of this > > > > * story? If you want good network performance _and_ some cycles left over to > > > > * get your work done, don't buy a Xircom card. Or convince them to tell me > > > > * how to do memory-mapped I/O :) > > > > > > ISA or PCI? > > > > PCMCIA :-) Sorry, I thought, this would have been clear since the post > > went to -mobile :-). > > As the author of that comment in the xe driver I should probably step in > here. I could be wrong, but I suspect you'll be SOL finding a 100Mbit > PCMCIA card that gives anything approaching 100Mbit performance. CardBus > would be another story, but support for that is still limited. The 10/100 > PCMCIA cards are nice, in that they'll attach to a mixed or 100Mbit-only > network, and give you a bit of extra bandwidth. I wouldn't expect much > more than that though. Of course, I don't expect 11.8 MBytes/sec as I get when two Intel Etherexpress PCI cards are talking to each other on FreeBSD :-). But I was quite disappointed of the 1.2MB/sec with PCMCIA. However, in the meantime I managed to test the same machine under Crap95 and got similar results. It really seems to be some hardware limit. I also got an Intel Etherexpress 100MBit ISA (yes, ISA) and this one does about 4-5 MBytes/sec under Crap95. Someone else told me that PCMCIA would be faster than ISA so I expected a bit more... > > I'm happy to be corrected on this -- anyone out there have experience with > any other such cards? <AOL> Me too :-) </AOL> > > Cheers, > > Scott -Andre To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19990914090402.A63360>