I have a wired 10/100 network in place where my Laptop and NAS are online at 100 Mb/s.
When I transfer large files from the laptop to the NAS, I see that my throughput is maxxed out at 50% and hovers between 42% and 50% throughout the entire transfer.
Why?
If I have 100 Mb/s to play with, shouldn't the transfer be occuring at upwards of 100 Mb/s?
Is there anything within Windows that I can tweak to raise the ceiling on this capped throughput?
2006-12-01 23:53:49 · 3 answers · asked by Anonymous in Computers & Internet ➔ Computer Networking
The 100 mbps speed is a theoretical limit. Ethernet networks rarely exceed about 50% of the rated throughput. The highest I've personally seen is around 70% and that was only momentarily -- and I've been working with ethernet networks since the old thicknet days.
Throughput on an ethernet network can also be limited by the capacity of any switches or hubs between you and the NAS box. If there are a large number of other connections among other machines on the network the switches may be maxing out on their backplane capacity to transfer data across the switching fabric. Hubs are even worse as they flood all packets to all ports.
If anyone else has a session to the NAS box it's also possible that you are exceeding the total capacity of the NAS to accept and process data. But as a practical matter if you're seeing 42% to 50% you're maxing out ethernet's ability to move data so that's probably not a factor.
There's nothing in Windows that you can tweak to change that; it's got nothing to do with Windows. It's an "ethernet thing."
2006-12-02 00:24:05 · answer #1 · answered by Bostonian In MO 7 · 2⤊ 0⤋
If you want to know for sure if itsa windows thing or an ethernet thing, download a trial version of WANKILLER. Pump it up to 101Mbps and it will take as much room as it can get no matter what Windows might be doing. If it is Windows you will see a huge jump in the throughput WANKILLER gets and it would most likely then be the TCP Window size (registry tweak). Most likely its just the consumer grade ethernet gear though.
2006-12-02 09:16:01 · answer #2 · answered by Clint C 2 · 1⤊ 1⤋
Ur comp is connected with a data transfer cable online, of course ther will be some variation, it cant be exact 100 mbps
2006-12-02 08:03:33 · answer #3 · answered by Mikhil M 2 · 0⤊ 0⤋