Biller wrote:
USB drive transfers from itself to the Win & PC at approximately
Upload 5.64 MBytes/Sec.
Download 119 MBytes/Sec


The NAS is a Buffalo.
I have two of them active on the LAN.

Both I have tested.
From the Win 7 PC via 5GHz WiFi.

A LAN Speed Test shows approximately.
Upload 0.20 MBytes/Sec
Download 4.97 MBytes/Sec

It's like it is going through a "routing step"
or something. I've had routers here before,
where the LAN to WAN speed is roughly 3MB/sec.
Whereas the LAN to LAN speed goes through the
learning switch portion and runs full speed.

What's interesting about your result, is the
up-to-down ratio seems to be 24x for each
test case. For the USB3 stick, the ratio is
a function of the asymmetry of cheap flash.
The lowest grade USB3 flash on Newegg might
give a typical 100MB/10MB read to write ratio.
So that's to be expected.

What's not expected, is a network transfer situation
that exactly preserves the USB3 ratio. That doesn't
make sense to me, that the ratios are a coincidence
(the same ratio). The LAN speed test should
have closer to a 1:1 ratio. (The protocol should
be pipelined, with pipelined ACK. Only fragmentation
could upset it, and the numbers still wouldn't
be that bad.) I had a fragmented non-pipelined
networking situation before, where the transfer
rate was 5KB/sec (over broadband!), but the
distance played a part. It was the way it
was routed through the network, plus the lack of
pipelining, that gave 5KB/sec. In your case,
even if something terrible happened from a
protocol point of view, the time of flight is
short.

Paul