Re: [patch] ns83820 0.17

Charles Cazabon (linux-kernel@discworld.dyndns.org)
Tue, 12 Mar 2002 13:06:47 -0600

Trever L. Adams <tadams-lists@myrealbox.com> wrote:
>
> Here is my question. A PCI bus, IRC, has about 500 Megabytes/sec of
> bandwidth.

Depends. 32-bit 33Mhz PCI is 133MB/s. 64-bit 66MHz PCI is 533MB/s -- those
are theoretical, of course. In real life you're not likely to see better than
about 90% of those figures, even in ideal cases.

> A full blown gigabit Ethernet stream should be around 133 Megabytes/sec.
> Sounds to me like a PC could act easily (As far as bandwidth is concerned)
> as a 4 to 5 port gigabit Ethernet router.

If you define PC as "cheap Athlon box with 32-bit, 33MHz PCI bus", then no.

Charles

-- 
-----------------------------------------------------------------------
Charles Cazabon                            <linux@discworld.dyndns.org>
GPL'ed software available at:  http://www.qcc.sk.ca/~charlesc/software/
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