User Manual

Rev 4.70
Mellanox Technologies
181
*InterruptModeration 1 Sets the rate at which the controller moderates or delays the
generation of interrupts, making it possible to optimize net-
work throughput and CPU utilization. When disabled, the
interrupt moderation of the system generates an interrupt
when the packet is received. In this mode, the CPU utiliza-
tion is increased at higher data rates, because the system
must handle a larger number of interrupts. However, the
latency is decreased, since that packet is processed more
quickly.
When interrupt moderation is enabled, the system accumu-
lates interrupts and sends a single interrupt rather than a
series of interrupts. An interrupt is generated after receiving
5 packets or after the passing of 10 micro seconds from
receiving the first packet.
The valid values are:
• 0: disable
• 1: enable
RxIntModeration 2 Sets the rate at which the controller moderates or delays the
generation of interrupts, making it possible to optimize net-
work throughput and CPU utilization. The default setting
(Adaptive) adjusts the interrupt rates dynamically, depend-
ing on traffic type and network usage. Choosing a different
setting may improve network and system performance in
certain configurations.
The valid values are:
• 1: static
• 2: adaptive
The interrupt moderation count and time are configured
dynamically, based on traffic types and rate.
pkt_rate_low 150000 Sets the packet rate below which the traffic is considered as
latency traffic when using adaptive interrupt moderation.
The valid values are 100 up to 1000000.
Note: This registry value is not exposed via the UI.
pkt_rate_high 170000 Sets the packet rate above which the traffic is consid-ered as
bandwidth traffic. when using adaptive interrupt modera-
tion.
The valid values are 100 up to 1000000.
Note: This registry value is not exposed via the UI.
Value Name Default Value Description