Poor guest network performance when using ixgbe with RSC enabled
Issue
- Poor guest network performance between a guest hosted on RHEL 6 KVM or RHEV3 and another system when using an Intel 10Gb/s NIC that uses the ixgbe module if vlan is used.
- It doesn't matter whether the guest uses the virtio network card or e1000.
- The network card that uses ixgbe driver is "08:00.0 Ethernet controller: Intel Corporation 82599EB 10 Gigabit Dual Port Backplane Connection (rev 01)"
Environment
Red Hat Enterprise Linux 6
Red Hat Enterprise Virtualization 3
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.
