Solarflare Solarflare XtremeScale series, User Manual, Page: 171 / 400

Solarflare Server Adapter User Guide
Solarflare Adapters on Windows
Issue 20 © Solarflare Communications 2017 164
You can also configure RSS and interrupts settings from the network adapter
properties. See Configuring Network Adapter Properties in Windows on page 184
for more details.
NOTE: Changing the RSS and Interrupt Moderation settings can impact the
performance of the adapter. You are strongly advised to leave them at their default
values.
RSS and Interrupts Options
Table 36 shows the RSS and interrupts options.
Table 36: RSS and Interrupts Options
Displayed (supported) options will differ between Windows OS versions and
different Solarflare drivers.
RSS Disabled ‐ RSS is disabled.
Closest Processor ‐ use cores from a single NUMA node.
Closest Processor Static ‐ Network traffic is distributed
across available CPUs from a single NUMA node, but
there is no dynamic load balancing.
NUMA Scaling ‐ CPUs are assigned on a round ‐ robin
basis across every NUMA node.
NUMA Scaling Static ‐ As for NUMA Scaling but without
dynamic load balancing.
Conservative Scaling ‐ RSS will use as few processors as
possible to sustain the current network load. This helps
to reduce the number of interrupts.
Max. RSS processors Set the number of processors to be used by RSS.
If this is greater than or equal to the number of logical
processors in the system then all processors are used.
Interrupt moderation Adaptive ‐ adjusts the interrupt rates dynamically,
depending on the traffic type and network usage.
Disabled ‐ interrupt moderation is disabled.
Enabled ‐ interrupt moderation is enabled.
Max (microseconds) This setting controls the value for the interrupt
moderation time. The default value is 60 microseconds
and can be changed for deployments requiring minimal
latency.
Base RSS processor The base processor to be used by RSS. The value is
specified as a group (range 0 ‐ 9) and CPU number (range
0 ‐ 63).