15 พ.ค. 2556

Poor network performance on Windows 2008 Server virtual machine


Symptoms

A virtual machine on a Windows 2008 Server may experience these symptoms:
  • Poor network performance
  • Slow network transfers

Resolution

To resolve this issue, ensure that the virtual machine:

To disable TCP Segmentation Offloading in Windows 2008:
  1. Run the command:
  2. 1. netsh int tcp set global chimney=disabled
    2. netsh int tcp set global rss=disabled
    3. netsh int tcp set global netdma=disabled
  3. Reboot the virtual machine.

Note: Using the provided registry value only changes one of many parameters, while the above command updates all the necessary parameters.

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