Installing the camera
125
Alvium G1 User Guide V1.1.1
Adjusting the NIC driver settings
The NIC should be adjusted to improve system performance when using Alvium G1
cameras. This is achieved by minimizing the CPU usage in order to avoid dropped
or resent packets.
Edit the NIC driver properties according to the values in the following table. The
names and availability of the properties listed may vary depending on
• NIC manufacturer
• Operating system
• Camera model.
Default packet size
At startup, Alvium G1 cameras have a default packet size of 576 bytes on the
device stream channel. This enables optimum backward compatibility when
ancient network hardware is used or when the network packets are tunneled
through other protocols. Consider, that this packet size creates a large overhead on
the host, which does not allow the full throughput most likely.
Enabling Jumbo Packets
We recommend you to increase the packet size to the maximum value supported
by all parts of the system. The effective packet size should be at least around
9,000 bytes
. Configure the NIC settings as follows:
1. Open the
Device Manager
with administrator permission.
2. Under
Network Adapters
, locate the Ethernet network adapter, right-click the
entry, and select
Poperties
in the menu.
3. Adjust the corresponding settings to match the values required in
.
Property
Value
Packet Size, Frame Size, Jumbo Packet,
or Maximum Transmission Unit
Maximum value configurable
Interrupt moderation
Enable
Interrupt moderation rate
Start with NIC’s default value and
experiment with different setting if
required
Receive buffers
Maximum value configurable
Table 69: NIC settings
Easy adjustment of the packet size
We recommend using
Vimba
to adjust the packet size on connected cameras. See
the Vimba C Manual that is included in the download of
Vimba Suite
at
www.alliedvision.com/en/support/software-downloads
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