Date: Fri, 1 Sep 1995 17:29:56 +1000 From: Bruce Evans <bde@zeta.org.au> To: davidg@Root.COM, pst@shockwave.com Cc: hackers@freebsd.org Subject: Re: novell ne2000 cards with FreeBSD...opinions? Message-ID: <199509010729.RAA32626@godzilla.zeta.org.au>
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>Yeah, I just looked at the driver and saw the programmed IO cruft in there >to deal with the novell cards. Bummer. Someone mentioned that some of the >cards really do have shared memory and can run just like the SMC and 3COM. >Do you know anything about this? Shared memory on my NE2000/WD8013EBT card is 50% faster, but that isn't saying much. The driver spends half its time bcopying to the shared memory instead of more that half its time doing explicit i/o instructions. The speeds are something like: i/o instructions: 2MB/sec bcopy: 3MB/sec IDE disk controllers: 3.3MB/sec PIO mode 0 (or 1?) spec 8MHz ISA bus max: 4MB/sec Bruce
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