4 Replies Latest reply on Sep 24, 2010 8:04 AM by mschipp@asi.com.au

    Intel Serverboard S5520HCT and Windows Hyper-V 2008 R2 NIC SLOOOOW

    mschipp@asi.com.au

      Hi All,

           Having an issue with this board and the onboard NIC's - 82576.

       

           Fresh install of OS we see data transfer of  ~100M

           Add roll Hyper-V (do not select to create a virtual switch)

           reboot

           Do a transfer again and network speed drops to ~5M

           Remove Roll Hyper-V

           Reboot

           Speed back to normal

       

      Thing tried when Hyper-V roll added;

           Disbale selective/all offloading

           Disbale flow control

           disbale chimney in netsh and or RSS

           Play with buffers settings

       

      We have 3 new servers all with the same issue any ideas please?

       

      Thanks

      Michael.