Comments on: Slow Network File Copy issues in Windows 7 caused by Remote Differential Compression

By: Seb

Seb — Thu, 12 Nov 2009 08:44:09 +0000

Just SUPER from 1,5% inuse to 50% inuse(after reboot), thx

By: John S

John S — Tue, 10 Nov 2009 00:18:42 +0000

I have a Broadcom 400x 10/100 NIC and after disabling, without a reboot, I saw immediate and substantial improvements. thanks much for this posting.

By: Dave

Dave — Sun, 01 Nov 2009 05:27:23 +0000

Make that I concur with Bryan

By: Dave

Dave — Sun, 01 Nov 2009 05:24:00 +0000

I beg to differ with your beg to differ. I concur with fsexpert.

I followed the steps. Did not reboot or restart (how ever the OS might have stopped and started service as part of the change) but it resulted in an immediate improvement from KB/Sec back to mb/s in ranges of 3x to 5x on differenct tests. And I can repeat the scenario.

Whatever the underlying reasons are doing this change is a catalyst to the end result of performance increase.

By: Mondo

Mondo — Tue, 20 Oct 2009 20:46:18 +0000

The problem in most cases will be the scalable network pack in conjunction with certain network adapters, especially Broadcom 57xx chips.

http://mondotech.blogspot.com/2009/10/windows-7-slow-network-access.html
http://msexchangeteam.com/archive/2007/07/18/446400.aspx

By: Bryan Kasch

Bryan Kasch — Fri, 09 Oct 2009 05:25:32 +0000

I beg to differ I followed the steps listed and I went from 2.5 to almost 6mb after restart, it worked, eternally grateful!

By: FS expert

FS expert — Mon, 18 May 2009 17:27:47 +0000

Your post is inaccurate.

RDC feature is purely a DLL install, and is not used by any Windows components.

See the post below from Microsoft clarifying this.

http://blogs.technet.com/filecab/archive/2008/05/02/debunking-a-myth-about-remote-differential-compression.aspx

Any change seen after diabling this feature are either imaginary, or caused by the reboot / changed network conditions.