2007Mar29
2

Slow Network access / slow network copy / slow shares in VISTA

This is one of the many problems i faced with Vista. File access on network shares was really slow. Shares took upto 5 minutes to show contents. Also file copy speed over the LAN was max 2 Mbps. After lot of research and trying some solutions, the problem was found to be ..

Vista's Network Auto tuning feature.

By Default it is turned on.

SOLUTION:

Just turn it off and you will be all set.

To disable it, run: “netsh interface tcp set global autotuning=disabled”

If you want to enable it again, run: “netsh interface tcp set global autotuning=normal”

(Both these last two should be run from an Administrator Command Prompt, not a “normal” command prompt).

Also, disabling Remote Differential Compression is a good idea to speed up things.

To do this go to Control Panel / Programs / Turn off Windows features

Untick Remote Differential Compression.

@man!

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    2 comments:

    Tatonca said...

    Thanks - found this while looking for something else - any clue what these settings actual do/are supposed to do? Why would I ever want them on, for example?

    Wednesday, June 11, 2008 at 1:56:00 PM EDT
    Tatonca said...

    I tried changing these settings... my sustained transfer rate in my internal network (Fast Ethernet) went from 980kb/s to 850kb/s. Turning autotuning back on did nothing - even after diabling the adaptor - turning remote differential compression however seemed to restored the throughput... End server was advanced sever 2003... perhaps that is the difference...

    Assuming mileage will vary but thought I would mention...

    Wednesday, June 11, 2008 at 5:59:00 PM EDT

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