Remote Differential Compression And Your Vista Network
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There’s been a lot of talk on the net lately about Vista and Remote Differential Compression slowing down file transfers. So I decided to give it a test.
Remote Differential Compression (RDC) allows data to be synchronized with a remote source using compression techniques to minimize the amount of data sent across the network. (From Microsoft)
I did a test on my home network to see if it really did slow down file transfers. I set up a 4.35 gig test file and transferred to a different hard drive inside my computer. I then transferred the same file across my home wired network to a different computer. I also performed the same test in Windows XP in my dual boot configuration.. Here are the results.
4.35 Gig test file, Windows Vista with Remote Differential Compression on.
Hard drive to Hard drive: 3:12 Computer to Computer: 13:54
4.35 Gig test file, Windows Vista with Remote Differential Compression off.
Hard drive to Hard drive: 2:47 Computer to Computer: 13:03
4.35 Gig test file, Windows XP
Hard drive to Hard drive: 1:33 Computer to Computer: 8:15
Turning off Remote Differential Compression saved 25 seconds on the internal test and 51 seconds in the network test, and Windows XP just stomped on Vista saving 74 seconds on the internal test and a whooping 288 seconds in the network test.
(You’re results may vary)
1. Click the Start Orb.
2. Type Features in the search box.
3. Click Programs and Features under the Programs section.
4. Under Tasks Click Turn Windows Features on or off.
5. Click Continue if prompted in the UAC.
6. Remove the check mark next to Remote Differential Compression in the Windows Features dialog box.
7. Click Ok, and in a few minutes Remote Differential Compression won’t be slowing you down any more.
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5 Comments on this post
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Tim said:
So why does this happen? Is there a way to even match vista’s download results with xp?
September 16th, 2007 at 6:16 pm -
Kevin said:
@ Tim, I’m not sure why Vista is that much slower than XP. Microsoft totally rewrote the network stack in Vista so maybe we’ll see some improvements in the coming months. But I will continue researching this issue. Stay tuned.
September 16th, 2007 at 9:33 pm -
Mike said:
It is a normal situation for Microsoft…
Win 2000 had more bugs then 98
XP was really slower then 2000
And Vista…—-
netcracker.April 30th, 2008 at 12:17 pm
I was stuck to 9 MB/s while copying files from my Server...
[...] Remote Differential Compression And Your Vista Network [...]
[...] a regular reader you know we discussed some ways to improve this issue by turning off RDC Remote Differential Compression and it helped a little, but for the most part the problem remained, and I learned to live with [...]