From: Gregg N 

Mike '/m'  wrote in
news:re7191h4guu7j5j1hr0g9fijmb0hg1cl1u{at}4ax.com:

> On Sun, 22 May 2005 10:08:38 -0400, "Geo"
 wrote:
>
>>"Mike '/m'"  wrote in message
>>news:2t1191dc52gqb7iqic14bo0iv8mp82ov9u{at}4ax.com...
>>
>>> 100mbps ethernet - 7-8MB/s throughput
>>> 1000mbps ethernet on PCI bus, regular frames - 10MB/s
>>> 1000mbps ethernet on PCI bus, jumbo frames - 12MB/s
>>> 1000mbps ethernet off PCI bus, jumbo frames - 13MB/s
>>
>>wow, that sucks, I would have expected more like 70MB/s with gigabit.
>
> That's about what I expected as well.  I suspect my media server has
> its NIC on the PCI bus, and that is the bottleneck.  I haven't had the
> chance to dig into it just yet.
>
>  /m

The plain vanilla 33MHz PCI bus has a bandwidth of about 1 Gbps (33 MHz
* 32 bits = 1056 Mbps). I think the PCI bus is not what is limiting you
if you are only achieving ~100 Mbps.

Gregg

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