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6–Configuring NIC Functionality in the Converged Network Adapter
Configuring the NIC in a Windows Environment
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Disabling RSS per Port Using the Windows Advanced Property
Pages To disable RSS per port using the Windows Advanced Property pages
(Figure 6-9):
1. Select ReceiveSideScaling under the Property box in the Advanced tab
and set the value to Disabled.
2. Click OK to save the setting and deactivate RSS.
Figure 6-9. Disable RSS Per Port
For more information about Microsoft implementation of RSS and its limitations for
Microsoft Windows operating system versions, refer to
http://technet.microsoft.com/en-us/network/dd277646.aspx
Header Data Split (HDS)
Header data split (HDS) is a feature of the networking stack in Microsoft Windows
Server 2008 and is fully supported by the QLogic 8100 Series Adapter NIC driver.
HDS enables the adapter NDIS miniport driver to indicate to the network stack
that incoming packets are split: the header portion of the packet and the data
payload portion of the packet are mapped into two or more memory descriptor
lists. The headers and the remainder of the payload are located in different areas
in virtual memory, instead of in one contiguous virtual memory block. This split of
the header and the data portions of the packets into multiple memory descriptor
lists increases system performance, and reduces CPU use through intelligent
cache management.
You should enable HDS in Microsoft Windows virtualized environments like
Hyper-V.