Support for New Feature: Multi-Queues

The ixgbe driver in the 10GigEthr-00 driver software bundle can configure the AB287A 10 Gigabit Ethernet card to support up to 8 logical paths in each direction (transmitting and receiving). This feature is critical to achieving good sustained throughput. Without making use of multi-queue, a single CPU will be used for interrupt processing on the receive path. If the CPU becomes over-saturated (very likely if the MTU is set to 1500, and there is a heavy traffic load), the card will not be able to sustain link rate. With multi-queue configured, different flows of traffic will be routed to different CPUs thereby helping to avoid saturating a CPU.

Each logical path is associated with VLANs of priority levels 0 - 7:

All traffic not sent through a VLAN will use path 0. Any traffic sent through a VLAN of a priority greater than the number of queues configured will go through queue 0 as well.
Traffic sent or received with a VLAN tag of priority 1 will use logical path 1. Traffic with VLAN tag priority 2 will use logical path 2 and so on.

How to Set Up Multi-queues

Setting up Multi Queue is a two step process explained in the following sections:

Configure the number of queues
Activate the queues by creating VLANs for each queue.

Support for New Feature: Multi-Queues

Technical documentation

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