Performance Issue at MS Windows

https://www-304.ibm.com/support/docview.wss?uid=swg21295167

http://support.microsoft.com/kb/951037

Current Status

netsh int tcp show global

Disabling Receive Side Scaling (RSS)

netsh int tcp set global rss=disabled

Disabling TCP Chimney Offload

netsh int tcp set global chimney=disabled

netsh int tcp set global chimney=netdma

Current Status

netsh>int tcp show global Querying active state... TCP Global Parameters -- Receive-Side Scaling State         : disabled Chimney Offload State              : disabled NetDMA State                       : disabled Direct Cache Acess (DCA)           : disabled Receive Window Auto-Tuning Level   : normal Add-On Congestion Control Provider : ctcp ECN Capability                     : disabled RFC 1323 Timestamps                : disabled

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

b. Add a new DWORD value named DisableTaskOffload and set it to 1.