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Windows 7: Slow File Transfer Over Network

23 Sep 2009   #11
Darcyn

Windows 7
 
 

lol File transfer with vista is slower thn windows 7.
A=Desktop xp
B=Notebook 7
C=Notebook vista
A-B=1.5mb
B-A=2mb
A-C=1.3mb
C-B=900kb o_O

After i saw that all are slow i thought problem is wireless I installed xp on my notebook(drive d: ) to check if it from wireless or not and speed was about 5.5mb per second.


My System SpecsSystem Spec
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23 Sep 2009   #12
H2SO4

Win7x64
 
 

Quote   Quote: Originally Posted by Darcyn View Post
lol File transfer with vista is slower thn windows 7.
A=Desktop xp
B=Notebook 7
C=Notebook vista
A-B=1.5mb
B-A=2mb
A-C=1.3mb
C-B=900kb o_O

After i saw that all are slow i thought problem is wireless I installed xp on my notebook(drive d: ) to check if it from wireless or not and speed was about 5.5mb per second.
6.75MB/sec is the theoretical maximum, so 5.5 is a good outcome.

Did you test those transfer speeds in [safe mode + net] in each case?
My System SpecsSystem Spec
23 Sep 2009   #13
Darcyn

Windows 7
 
 

Yes same speeds under safe mode anyway i'll buy a external disc tomorrow i can copy files fast over. Using 2 os under 1 computer may cause harm? If it cause i ll delete xp.
My System SpecsSystem Spec
.

03 Jan 2011   #14
jelion

Windows 7 Professional 64 bit
 
 
Win7 File Transfers slow: Disable Large Send Offload v2

I found a good lead on another board ( Windows 7 Ultimate - Painfully slow file transfer on ethernet network (cables only) ). Since the problem had a lot of leads which didn't work, I thought I'd cross-post a solution that worked for me.

Specifically, my problem was that file transfers FROM Win7 to XP were slow, measured by seeing network utilization in the Task Manager at about 1%. Transfers from XP to Win7 typically used 80-99% of the network bandwidth. These results were achieved whether the transfer was "push" or "pull".

What worked for me: I went to Local Area Network properties, Configure, Advanced Tab, and disabled Large Send Offload v2. The advice to disable autotuning, RSS, set Speed & Duplex to a specific value, remove from homegroup, did nothing. Ultimately, the settings which worked on my Dell XPS 8100 Win7 Pro 64-bit workstation were as follows:

ARP Offload - Enable
Ethernet@WireSpeed -Enable
Flow Control - Auto
Interrupt Modulation - Enable
IPv4 Checksum Offload - Rx & Tx Enabled
Large Send Offload (IPv4) - Enable
Large Send Offload v2 (IPv4) - Disable
Large Send Offload v2 (IPv6) - Disable
Network Address - Not present (radio button)
NS Offload - Enable
Priority & VLAN - Priority & VLAN Enabled
Receive Side Scaling - Enable
RSS Queues - RSS 4 Queues
Speed & Duplex - Auto
TCP & UDP Checksum Offload (IPv4) - Rx & Tx Enabled
TCP & UDP Checksum Offload (IPv6) - Rx & Tx Enabled
VLAN ID - 0
Wake Up Capabilities - Both
WOL Speed - Lowest Speed Advertised

Hope this proves helpful to someone else.
My System SpecsSystem Spec
19 Feb 2011   #15
Alert5

Windows 7 Pro x64
 
 

Thank you for the tip jelion. Your suggestion helped a bit.

To test this I transferred a 7.5GB mpg from my Win7 Pro x64 to an old Linkstation NAS shared folder. The process fluctuated between 5.3M/s, 6.7M/s and 8.0M/s, but mainly transferred at 8.0M/s. The process took a little over 18 minutes. Before applying your tip I would see 7M/s tapering off to slower speeds over time when transferring the same video. The latest transfer test is entirely acceptable performance for me, as it takes away the frustration of hours long processes or ones that failed altogether in the past.

I think the real issue for slow or failed file transfers between Win7 to a NAS or an XP shared folder has more to do with packet size mismatches than anything else. I say this because I was having fits trying to map network drives. It turns out the root cause was the LAN adapters for these devices were not set to use a standard 15xx MTU.

My LAN is gigabit. The LInkstation, the XP box and the Win7 box are all wired through a 1GB/s switch which is also my router. The Win7 box is using a gigabit capable motherboard ethernet connection, the XP machine is using a gigabit PCI NIC card, and the Linkstation allows 1GB/s as well.

I could not even see the Linkstation or XP PC in my Win7 network until I made sure all devices were set to us a "standard" MTU of 15xx as opposed to disparate jumbo frame sizes that I had no way of making precisely the same value. For the PCs this meant disabling jumbo frames and for the NAS, choosing 15xx in the settings. I have the speed set at 1GB/s for all devices.

Voila! The devices popped right up in the "Map Network Drive" browsing window and once created they open instantaneously with a double click.

My suggestion to anyone having file transfer issues is to take a hard look at the frame size settings first.

I just ran another transfer test. About 400 .m4a music files amounting to 2.2GB transferred from my XP PC to an iTunes folder on the Win7 PC in less than 2 minutes. This is at about 28M/s.
My System SpecsSystem Spec
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