
Solarflare
Server
Adapter
User
Guide
Solarflare
Adapters
on
Windows
Issue
20
©
Solarflare
Communications
2017
185
NOTE:
Before
making
any
changes
to
your
Solarflare
adapter
features,
read
the
section
on
first.
Table
43:
Solarflare
Network
Adapter
Properties
Property
Name
Values
Description
Adaptive
Interrupt
Moderation
Enabled
Disabled
This
setting
is
dependent
on
the
Interrupt
Moderation
setting.
If
Interrupt
Moderation
is
enabled,
Adaptive
Interrupt
Moderation
allows
the
adapter
to
vary
its
interrupt
moderation
automatically,
according
to
network
traffic
demands.
If
Adaptive
Interrupt
Moderation
is
disabled,
interrupt
moderation
interval
is
fixed
at
the
setting
specified
in
Interrupt
Moderation
Time.
Default
setting:
Enabled
Flow
Control
Auto
Negotiation
Disabled
Rx
&
Tx
Enabled
Rx
Enabled
Tx
Enabled
Ethernet
flow
control
(802.3x)
is
a
way
for
a
network
device
to
signal
to
a
sending
device
that
it
is
overloaded,
such
as
when
a
device
is
receiving
data
faster
than
it
can
process
it.
The
adapter
does
this
by
generating
a
‘pause
frame’
to
request
the
sending
device
to
temporarily
stop
transmitting
data.
Conversely,
the
adapter
can
respond
to
pause
frames
by
suspending
data
transmission,
allowing
time
for
the
receiving
device
to
process
its
data.
Default
setting:
Auto
Negotiation.
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
µs
Specifies
the
interrupt
moderation
period
when
Interrupt
Moderation
is
enabled.
The
default
setting
(60µs)
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:
60µs