
Issue 11
© Solarflare Communications 2014
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Solarflare Server Adapter
User Guide
Tuning Settings
Tuning settings for the Solarflare adapter are available through the Solarflare Adapter Manager
(SAM) utility, or via the
Advanced
tab in the
Windows Device Manager
(right-click the adapter and
select
Properties)
Using SAM to Configure Adapter Features on page 135
Network Adapter Properties in Windows on page 167
for more details.
lists the available tuning settings for Solarflare adapters on Windows.
Maximum Frame Size
The default maximum frame size ensures that the adapter is compatible with legacy 10/100Mbps
Ethernet endpoints. However if a larger maximum frame size is used, adapter throughput and CPU
utilization can be improved. CPU utilization is improved, because it takes fewer packets to send and
Table 53: Tuning Settings
Setting
Supported on
Windows Server 2008 R2/Windows 7 /Windows 8
Windows Server 2012
Adaptive Interrupt Moderation
Yes
Interrupt moderation
Yes
Interrupt Moderation Time
Yes
Large receive offload (IPv4)
Yes
Large Receive Offload (IPv6)
Yes
Large send offload (IPv4)
version 2
Yes
Large send offload (IPv6)
version 2
Yes
Max Frame Size
Yes
Offload IPv4 checksum
Yes
Offload TCP checksum (IPv4)
Yes
Offload TCP checksum (IPv6)
Yes
Offload UDP checksum (IPv4)
Yes
Offload UDP checksum (IPv6)
Yes
Receive Side Scaling (RSS)
Yes
RSS Interrupt Balancing
Yes
RSS Numa Node
Yes