What is the mq qdisc in tc Traffic Control?

Solution Verified - Updated -

Issue

  • What is the mq qdisc (queuing discipline) in tc Traffic Control?
  • How does Linux send packets to NICs with multiple transmit interrupt queues?
  • Does the kernel use more than one Tx channel on multi-queue network interfaces?

Environment

  • Red Hat Enterprise Linux 6 or later
  • Network interface card (NIC) with multiple hardware transmit interrupt channels
  • Default Linux queuing discipline mq qdisc

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