Windows 8 file transfer speed problem

[jayhopeishere]

I am having problems transferring large files to my Windows 8 machine from my Windows 7, Windows 2008 Server, and Windows 2012 server. The files starts off transferring between 110-118MB/s but then drop below 20MB/s and stay there. I have tried 2 different nics (onboard and a Intel pro 1000mt nic) and get the same problem with both. I don't have this transfer problems when I move files between my Windows 7 machines and Windows 2008 server machine, only the Windows 8 machine. All these machines are on a Windows 2003 domain. Here are things that I tried to fix the problem.

- Tried 2 different nics (onboard Intel 1217-V and Intel Pro 1000MT pci nic)
- Disabled smb signing on my Windows 2003 DC (used this link to do it: http://support.exinda.com/topic/how...on-windows-servers-to-improve-smb-performance)
- Disabled Large Send Offload (IPv4 and IPv6) in the advanced nic properties
- Install latest nic driver

I am having a similar transferring problems on my Windows Server 2012 machine when I try nic teaming. When I don't use nic teaming my transfer speed are constant.

Have anyone experience this problem or know what I may need to do to fix it?

Specs of the Windows 8 machine is listed below.
Motherboard: Gigabyte z87x-D3H
CPU: Intel I5-4670 Haswell
RAM: 8gb Kingston
OS: Windows 8 32bit evaluation

 

[jimh425]

It sounds like the buffer mismatch that happened between Windows 7 and 2003. I never could get it to work without upgrading all of the boxes, but there were some registry entries that attempted to fix it.

 

[mvmiller12]

My experience with that seems to be caching. I had a dedicated server with 16G of RAM running Server 2012, and file transfers from Win 8 to that dropped off like you said, but only after transferring ~1.5Gs of the file. The server was retired and my Win8 Media Center PC is now running the RAID array that was attached to it. This machine only has 4G of RAM, and the speed drop off now occurs after the first 100-200M.

 

[jayhopeishere]

My experience with that seems to be caching. I had a dedicated server with 16G of RAM running Server 2012, and file transfers from Win 8 to that dropped off like you said, but only after transferring ~1.5Gs of the file. The server was retired and my Win8 Media Center PC is now running the RAID array that was attached to it. This machine only has 4G of RAM, and the speed drop off now occurs after the first 100-200M.

Is there a reason why you retired the Server 2012 when your drop off was better in this server at 1.5Gs instead of the Win8 at 100-200Ms?

 

[jayhopeishere]

My experience with that seems to be caching. I had a dedicated server with 16G of RAM running Server 2012, and file transfers from Win 8 to that dropped off like you said, but only after transferring ~1.5Gs of the file. The server was retired and my Win8 Media Center PC is now running the RAID array that was attached to it. This machine only has 4G of RAM, and the speed drop off now occurs after the first 100-200M.

You was right about the cache. I should have mention that I was running 3 hard drives in a raid 5 using the onboard raid with the Intel Raid Storage technology software. I went into the Intel Raid software and saw that the "Write-cache buffer flushing" feature was enabled. After I disabled this feature and change the "Cache Mode" to write back my speed is more stable. My write speed to the Windows 8 machine raid is now between 105MB/s and 113MB/s.

I have to do some more research on these feature because I don't know what these changes will do to my raid incase of a power outage.