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Windows 7: Win7 to Win7 slow network transfers

25 Dec 2011   #11

Windows 7 Professional x64

Quick update:

I have also tested transfers on another laptop and the speed was roughly the same. There is clearly an issue on the server side but I have no clue what ity might be...

My System SpecsSystem Spec
28 Dec 2011   #12


Quote   Quote: Originally Posted by mrtn View Post
On the server side:
  1. Device sleep on disconnect - Enabled
  2. Flow Control - Disabled
  3. Interrupt Moderation - Enabled
  4. IP Checksum Offload - RX & TX Enabled
  5. Jumbo Packet - 1514 bytes
  6. Large Send Offload V1 (IPv4) - Enabled
  7. Large Send Offload V2 (IPv4) - Disabled
  8. Large Send Offload V2 (IPv6) - Disabled
  9. Low Power Idle Mode - Enabled
  10. Low Power State Link Speed - Enabled
  11. Network Address - Not present
  12. Priority & VLAN - Priority Enabled
  13. Speed/duplex settings - Auto negotiation
  14. TCP Checksum Offload (IPv4) - RX & TX Enabled
  15. TCP Checksum Offload (IPv6) - RX & TX Enabled
  16. UDP Checksum Offload (IPv4) - RX & TX Enabled
  17. UDP Checksum Offload (IPv6) - RX & TX Enabled
  18. VLAN Id - 1
  19. Wake on Magic Packet - Enabled
  20. Wake on pattern match - Enabled
  21. WakeOnLAN From PowerOff - Enabled

I'd be tempted to change to opposing settings on items 1, 2, 7, 8, 9, 12, 13 (setting the speed to the maximum bandwidth the adapter is built for under the last item, which is presumably Gigabit LAN...)

Firsthand it goes without saying you should ensure you have the latest and greatest driver powering it of course.

I would also be suspicious of option 12 given the router you're using... try it on simply the basic priority setting...
My System SpecsSystem Spec
28 Dec 2011   #13

Windows 7 Professional x64

Qdos you are a genius!

It appears that changing the Flow Control setting to Rx & Tx Enabled has doubled my transfer speed, which reaches 6-9 MB/s!!!

Many thanks for your help!
My System SpecsSystem Spec

28 Dec 2011   #14


Most welcome. It just never ceases to amaze me why adapters are seldom running optimal settings 'out of the box' almost 100% of the time...

Apologies I wasn't quicker, but took a few days out over Xmas...
My System SpecsSystem Spec

 Win7 to Win7 slow network transfers

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