Date: Fri, 01 Sep 1995 00:45:10 -0700 From: Paul Traina <pst@shockwave.com> To: Bruce Evans <bde@zeta.org.au> Cc: davidg@Root.COM, hackers@freebsd.org Subject: Re: novell ne2000 cards with FreeBSD...opinions? Message-ID: <199509010745.AAA00559@precipice.shockwave.com> In-Reply-To: Your message of "Fri, 01 Sep 1995 17:29:56 %2B1000." <199509010729.RAA32626@godzilla.zeta.org.au>
next in thread | previous in thread | raw e-mail | index | archive | help
OK, well it sounds like a 50-50 trade-off, these machines aren't going to be doing heavy ethernet operations, so the price savings ($25/card vs $100/card) is worth it (unless someone knows of a cheap source of WD cards in the SF bay area). Just out of curiosity, has anyone looked at low overhead high performance ethernet and fast ethernet cards? I actually care more about CPU loading than filling up a 10mb wire... on a 100mb wire, I start to worry. :-) Paul From: Bruce Evans <bde@zeta.org.au> Subject: Re: novell ne2000 cards with FreeBSD...opinions? >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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199509010745.AAA00559>