
Issue 11
© Solarflare Communications 2014
169
Solarflare Server Adapter
User Guide
Interrupt
Moderation
Enabled
Disabled
Interrupt moderation is a technique used to reduce
the number of interrupts sent to the CPU. With
interrupt moderation, the adapter will not generate
interrupts closer together than the interrupt
moderation time. An initial packet will generate an
interrupt immediately, but if subsequent packets
arrive before the interrupt moderation time period,
interrupts are delayed.
Default setting:
Enabled
Interrupt
Moderation Time
1–1000 us
Specifies the interrupt moderation period when
Interrupt Moderation
is enabled.
The default setting (60
μ
s) has been arrived at by
lengthy and detailed system analysis, balancing the
needs of the operating system against the
performance of the network adapter.
Default setting:
60
μ
s
IPv4 Checksum
Offload
Disabled
Rx & Tx Enabled
Rx Enabled
Tx Enabled
IP checksum offload is a hardware offload
technology for reducing the load on a CPU by
processing IP checksums in the adapter hardware.
Offload IP Checksum is enabled by default for
transmitted and received data.
Default setting:
Rx & Tx Enabled.
Large Receive
Offload (IPv4 and
IPv6)
Enabled
Disabled
Large Receive Offload (LRO) is an offload technology
for reducing the load on a CPU by processing TCP
segmentation for received packets in the adapter.
Default setting:
Disabled
Large Send Offload
Version 2 (IPv4 and
IPv6)
Enabled
Disabled
Large Send Offload (LSO) is an offload technology
for reducing the load on a CPU by processing TCP
segmentation for transmitted packets in the
adapter.
Caution
: Disabling LSO may reduce the performance
of the Solarflare adapter.
Default setting:
Enabled
Table 43: Solarflare Network Adapter Properties
Property Name
Values
Description