Dell Emulex Family of Adapters - Manual (Page 598)

Emulex Drivers for Windows User Manual P010077-01A Rev. A
3. Configuration
NIC Driver Configuration
598
Preferred NUMA
Node Not present or a value from
0–65535.
Optional. No default setting is
set. Windows Server 2008
Windows Server 2008 R2
Windows Server 2012
Windows Server 2012 R2 Most modern multi-socket servers
have separate memory controllers
for each CPU socket. These
systems have non-uniform memory
access (NUMA) latencies for a
given CPU core to access the local
versus remote memory node.
By setting this property, the driver
attempts to use both memory and
CPU cores from the given NUMA
node.
If the Preferred NUMA node is not
set, the driver uses the preferred
NUMA node as specified by the
computer's BIOS.
For best performance, the
network applications should try to
use memory and CPU affinity from
the same NUMA node. This level of
tuning is primarily noticeable
when multiple adapters are
running.
Receive Buffers 64–16384, inclusive
The default value is 896. Windows Server 2008
Windows Server 2008 R2
Windows Server 2012
Windows Server 2012 R2 This determines the number of
Ethernet receive buffers allocated
per receive queue. This number
may be adjusted by the driver as
needed.
Receive CPU “Not Present” or a value from
0 through (number of CPUs on
the system-1).
Optional. There is no default
setting. Windows Server 2008
Windows Server 2008 R2
Windows Server 2012
Windows Server 2012 R2 Sets the logical CPU used for
processing the non-RSS receive
packets. By default, the driver
intelligently chooses a CPU in the
system, so this parameter should
only be used for advanced
performance tuning. RSS packets
are processed by the set of RSS
CPUs provided by the Windows
operating system.
Table 3-3 Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 NIC
Driver Options (Continued)
Option Name Acceptable Values
Supported Operating
Systems
Definition