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- From: snapper@lightning.mgl.ca (Allan Purtle)
- Subject: Re: New ethernet card?
- Newsgroups: comp.sys.amiga.networking
- References: <4il54j$mue@vixen.cso.uiuc.edu> <36884050@arkon.dontpanic.sub.org>
- Organization: MGL Systems Internet
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- Message-ID: <3153a94d.0@news.mgl.ca>
- Date: 23 Mar 96 07:33:33 GMT
- Path: news.mgl.ca!not-for-mail
-
- Klaus Burkert (crest@arkon.dontpanic.sub.org) wrote:
- : In article <4il54j$mue@vixen.cso.uiuc.edu> <claevius@firefly.prairienet.org> wrote:
- : > Another related question: Know of any Zorro-III ethernet cards? If I
- :
- : Not necessary.
- :
- : > remember correctly, both the Adriane and Commodore's A2065 (I think that's
- : > the model number of CBM's own ethernet card, anyway...<?>) are Zorro-II
- : > 16-bit cards, which would give them a bus bandwidth of about two and a half
- : > meg per second. Typical ethernet connectivity will give you about nine or
- : > ten meg per second, which is pretty close to what the bandwidth of the
- :
- : 10 M_BIT_/s, that's slightly abov 1M_BYTE_/s which ZorroII can handle
- : without any problems.
- : What you're talking about is Fast-Ethernet which is not that widespread
- : and the number of Amigas connected to such a net is that small, that you'd
- : sell perhaps 50 boards/year which does not make up for manufacturing and
- : developing at all. Another issue is, that a lot of performance get's lost
- : during the networking-layers (virtual volume -> envoy -> sana.device -> HW).
- : As an imgae: two stock A3000 connected via Ariadne and Envoy, DiskSpeed
- : on the other A3000's RAMDISK gives about 300 - 350 KB/s. When you equip
- : both machines with WarpEngine40/40s, this goes up to well above 600KB/s.
- : Under NetBSD we had well above 700KB/s throughput with Ariadne...
- : So what would be the point in having 100MBit/s networking on the hardware
- : level when the software limits it to below 1 MB/s?
- :
- : Ciao, Klaus.
-
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- Respectfully yours /////R/ snapper@mgl.ca
- Allan M. Purtle ///P/// www.mgl.ca/~snapper
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