Extremely slow file transfers and network access...

[Freelancer852]

To be short and to the point, all of my local network access is snail slow. It takes me minutes to connect to my other PCs via Remote Desktop (takes seconds on my Vista install), and file transfers are incredibly slow:

(As you can see, my entire network is Gigabit, and it displays this connection correctly) However, none of this affects my internet access, which is still just as fast as it was on all my other computers. This leads me to believe that it's a Windows 7 issue... Any help on speeding this up would be great!

 

[atomikpunk]

better late than never

well maybe you have this answered by now im sure but one thing to keep in mind is that your seeds wil only be as fast as your drives write speed. I mean it will kick the packest faster but if your drive has a write speed of XMb/s then it really reflects this. Now on the other hand if you know your drives ar much faster than whats in your screen well thats something else already. Unfortunately I have a similar problem. I have raptors and yet my network yeilds alot less sometimes. Something is broken in thier networking in my opinion.

 

[Digger]

cant tell what adapter you have. For starters, if you havent already, reinstall the network drivers from manufacturers site. Secondly, shouldnt matter much, but want to know if you are using AutoNegotiation or 100/1000 or half/full duplex

 

[ysolaris]

I am having the same problem.
What is wrong with W7?
Have you any idea?


Thanks,
Yannis

 

[hdjunkie]

Wow, at first I thought it was 38Mbps and I was thinking "That's not that bad" until I noticed it was KB. I had this exact problem in win7 a few months back when attempting to tweak my dma2100's network performance. When switching one of my adapters to 100Mb full duplex when the rest were 1000Mb full duplex I had speeds very similar to yours.
If you haven't already check the advanced properties of you LAN adapters for all of your PCs on the network.

1. Type "ncpa.cpl" in the start menu to open network connections.
2. Right click on your LAN adapter and choose properties.
3. Click configure, and then the advanced tab.
4. Choose the "Speed & Duplex" option and make sure it's set to 1.0 Gbps Full Duplex on all of your PCs.

If you're using a wireless bridge to join parts of your network you of course won't get 1.0 gbps, but only the speed of the wireless connection. It should still be faster than 38k though.

 

[leverb]

I had the same issue... lightning fast internet even on my wireless but incredibly slow transfers over the network from pc to pc running windows 7 on both. I have updated to 7068 and jus applied that hack above (set spped & duplex to 1000mbits) and so far so good but seem to be experiencing a slowdown on downloads when comuter is idle, even though the checkbox for allow windows to turn this device off to save power is not checked...

 

[BulletproofSean]

Choose the "Speed & Duplex" option and make sure it's set to 1.0 Gbps Full Duplex on all of your PCs

Never EVER do this unless the switch port you are connecting to is also specifically configured for Full Duplex communication. Otherwise it will make the problem worse. If the switch you are connecting to is "unmanaged", then it's ports are all Auto-Negotiate.

 

[sarv]

I don't think you should "scare monger" with your duplex settings. It's not all that bad and you can always switch back.

I found that the thing which fixed it for me was "flow control"

Start \ Run --> ncpa.cpl
right click on adapter ... select properties
click on "configure"
click on "advanced"
highlight the property "Flow Control" and change it to "disabled".

This stopped the rate limiting and let my adapter run at full speed.

Regards,
Sarv.

 

[Tews]

Holy necromancy!!

 

[BulletproofSean]

I don't think you should "scare monger" with your duplex settings. It's not all that bad and you can always switch back.

I found that the thing which fixed it for me was "flow control"

Start \ Run --> ncpa.cpl
right click on adapter ... select properties
click on "configure"
click on "advanced"
highlight the property "Flow Control" and change it to "disabled".

This stopped the rate limiting and let my adapter run at full speed.

Regards,
Sarv.

It's not scare mongering, it just won't work, and in fact will make things worse. But you're right, it's not like it'll wreck anything, I'm not sure why I felt so strongly that I needed to say never ever with caps, but hey, whatever.

 

[BulletproofSean]

Hrm, is it common for Flow Control to somehow get changed? It's already "Disabled" on all of my Windows 7 systems.

EDIT: Found one. A Marvell Yukon gig NIC had "Tx and Rx Enabled". Interesting.

 

[Moza]

You should try disabling the RDC in the Windows features.

I had the same problem but came across this info on the Windows Reference site.

Changed the setting, didn't even have to reboot and the network was rocking again.

 

[logicearth]

You should try disabling the RDC in the Windows features.

I had the same problem but came across this info on the Windows Reference site.

Changed the setting, didn't even have to reboot and the network was rocking again.

That would be an incorrect assessment.

 

[gurm42]

You should try disabling the RDC in the Windows features.

I had the same problem but came across this info on the Windows Reference site.

Changed the setting, didn't even have to reboot and the network was rocking again.

This has been completely debunked by MS:

The Storage Team at Microsoft - File Cabinet Blog : Debunking Myths about Remote Differential Compression and System Performance

 

[doublebug]

I have some sort of the same problem. Right after reboot it works perfect. But some time later is slows down. But not so straight forward. When I copy files using Windows 7 from XP host it works on full speed (1 GB/s). But when I try to copy using XP from Windows 7 host it gives me 2-3 MB/s or even less. So I tried to change NIC settings to no avail. Tried to restart different services. After I restarted Windows Firewall service (Firewall was disabled but service is running) it started working again on full speed. So may be that helps someone else.

 

[Mondo1287]

Try running this from an admin cmd prompt

netsh interface tcp set global chimney=disabled

Mondo Tech: Windows 7 Slow Network access

You Had Me At EHLO... : Windows 2003 Scalable Networking pack and its possible effects on Exchange

 

[logicearth]

Try running this from an admin cmd prompt

netsh interface tcp set global chimney=disabled

Yet if that is not the problem you should turn it back on.

http://windows.microsoft.com/en-US/windows-vista/What-is-TCP-Chimney-Offload

TCP Chimney Offload is a networking technology that allows the work associated with moving data across a network to be offloaded from the host computer's CPU to the network adapter.

 

[junkcollector]

I am having a similar problem - Win7 x64 Ultimate (retail) on an ASUS AMD mobo (AN8-SLI) with nForce4 Gb Ethernet built-in. Clean Win7 load (not an upgrade). I am using Samba file shares on Ubuntu and Buffalo HomeStation, file transfer is 1/10 the speed when this was running XP - getting 350KB/s. At first I thought it might be a problem with SMB and non-Windows servers, so I tried the same transfer over http. I setup the Win7 as a web server and used a browser to download the file on the Ubuntu - some improvement, up to 500KB/s, but I attribute that to the protocol. Networking in Task Manager shows 1Gbps link with utilitzation around 1% while copying over http and 0.5% using a file share.

I am using the latest NVidia drivers (15.51) for the nForce ethernet, but the speed option under Advanced only shows up to 100Mb full duplex, so I left it at autonegotiate. The switch indicates it's running at 1Gbps and so does the Task Manager, but it's behaving like it only running at 100Mbps - I'm beginning to suspect the driver is guilty, especially with the 10x loss of speed. I used to copy 25GB in 2 hours, now it says it will take 20 hours.

 

[CyrusTheVirus]

Hello,

I have exactly the same problem. I intended to remote access to my windows 7 machine from multiple computers, however this is incredibly slow compared to XP-XP. Also file transfer is stupid slow.
I have hardly put any software on yet after the clean install. Just VMWare.
Has there been a solution to this yet?

 

[junkcollector]

I posted this issue to Microsoft (after some further research) and they solved it for me! They asked if my router was on the Windows 7 compatibility list, and that seemed really strange since 802.3 (Ethernet) has been around a long time and why would that suddenly change with the O/S? But I unplugged my PC from the Trendnet Gb router and plugged it into the old Linksys 100Mb and BAM - full network speed! On the Gb router, I couldn't get above 2% in the monitor on a file transfer - on this "compatible" one, I get 100% and file transfers are screeming.