Poor Samba throughput on 6.0

[Nash Nipples]

Hi Guys!

I just cant sleep till i make this thing clear.

We have a 10/100 Mb/s NIC  which transmits 33 000 000 Hz x 32 Bytes width = 132 MB/s over PCI 2.2

But how do you guys count 12.5 MB/s in the cable when the NIC has lets say realtek 8139 25 MHz external clock. and 4 cables to transmit bi-directional data that is only TX+ TX- RX+ RX- which is only 2 bits long at a time so 25 MHz x 2 = 6.25 MB/s for 4 wires and 25 MHz x 4 = 12.5 MB/s for 8 wires. and how do you get 25 MB/s on a 1G link when the clock is still 25 MHz?

Thank you,

Nash



Mike Jakubik <mikej at rogers.com> wrote: On Mon, May 29, 2006 8:10 pm, Joao Barros wrote:
> On 5/27/06, Mike Jakubik  wrote:
>> I am using -CURRENT here, disabling net.inet.tcp.inflight improves the
download rate by 2MB/s!
>>
> How old is that CURRENT? I believe that shouldn't happen after Andre's
commit back in March.
> I can't see any difference toggling inflight on or off.

FreeBSD 7.0-CURRENT #0: Tue May 16 13:46:05 EDT 2006.








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