From: Mike '/m' 

On 22 May 2005 13:25:45 -0400, Gregg N  wrote:

>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.

That's what I thought, however the theoretical maximum does not seem to be
the same as the achievable maximum.  WHy, I don't know.  Maybe wait states,
latency issues, data packet size issues?  I wish I knew.

I may even be barking up the wrong tree.

 /m

--- BBBS/NT v4.01 Flag-5