152
•
Appendix
Z-Trak2 3D Profiler Sensors
•
Adaptive Inter-Frame Spacing
. Disabled by default, it should remain disabled.
•
Flow Control
. Should be enabled. The chosen value may depend on the network switch used.
Choose
Rx & Tx Enabled
.
•
Interrupt Moderation
. Should be enabled.
•
Interrupt Moderation Rate
. Choose any value except
Adaptative
. To maximize real-time
performance, choose
Off
. To minimize CPU usage, choose
Extreme
.
•
Jumbo Packets (Jumbo Frames)
. Should be enabled, e.g. choose
9014
.
•
Large Send Offload (IPv4)
. Should be disabled.
•
Receive Buffers
. Increase the number of Receive Buffers if you notice a significant decrease in
the performance of received traffic. If receive performance is not an issue, use the default
setting.
•
Receive Descriptors
. If available, set to the largest value supported by the NIC.
•
Receive Side Scaling Queues
. If supported, enable. Use 2 queues when good throughput and
low CPU are required.
•
Wait for Link
. If available, select
Auto Detect
.
NIC optimizations
The
Network Imaging Package for Sapera LT Optimization Guide
also proposes some configuration
values for different optimization goals, such as quick response and low latency, high throughput,
system robustness, or lower CPU utilization.
For instance, for optimizing throughput, recommended settings are:
•
Enable
Jumbo Packets
(value between 1500 and 900 Bytes might increase max throughput in
certain systems.
•
Disable
Flow Control
in Ethernet switches.
•
Increase
Receive Descriptors
.