File Transfer Speed Problems

[codemonkey76]

My server is Windows Server 2008 R2, and my clients are all Windows 7 x64

 

I can transfer files between clients and the transfer speed is around 65MB/sec, but transferring files to the server it slows to a crawl of around 3-6MB/sec. Also server becomes inaccessible to other clients while that painfully slow file copy is in progress.

 

On another possible related note. If i right click in one of the folders on a network drive and click new folder, nothing happens, but if i try it again it says "New Folder" already exists. Refreshing doesn't seem to show new files for a long time.

 

Also If I open excel or word for that matter and attempt to save a file on the network drive, it fails, but if i save it on my desktop and then drag and drop it onto the folder it allows me to do it.

[ICTCity]

do you have Nod32? Try to disable the antivirus because usually it's the guilty.

[codemonkey76]

client-server connection speed as reported by iperf is:

------------------------------------------------------------

Client connecting to server, TCP port 5001

TCP window size: 64.0 KByte (default)

------------------------------------------------------------

[ 3] local 192.168.2.62 port 5140 connected with 192.168.2.1 port 5001

[ ID] Interval Transfer Bandwidth

[ 3] 0.0-10.0 sec 491 MBytes 412 Mbits/sec

 

So it seems as if it's specifically a file sharing issue. There is no virus protection on the server, the client has Microsoft Security Essentials

[ICTCity]

Do you have dfsr installed? I think your problem is offloading

[codemonkey76]

I don't know what dfsr is, should I have it installed, or should I remove it if it's installed?

[ICTCity]

Depends if you need it :) it's a role to transfer and sync between servers.

 

 

For now try to add these keys:

 

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

 

 

 

Value =DisableTaskOffload

Type = DWORD

Data = 1

 

 

 

Value =EnableTCPChimney

Type = DWORD

Data = 0

 

 

 

Value =EnableTCPA

Type = DWORD

Data = 0

 

 

 

Value =EnableRSS

Type = DWORD

Data = 0

 

 

 

Once done reboot your server

[codemonkey76]

only have 1 server, so probably don't need it, will add the keys

[codemonkey76]

done, rebooted, same problem. 7-8MB/sec