Efficient queue access for user-space packet processing

A non-transitory computer-readable storage medium that includes executable instructions to cause a processing device to:

• determine whether a preemption flag associated with a first input/output (I/O) queue handling thread is equal to a first value indicating that preemption of the first I/O queue handling thread is forthcoming, wherein the first I/O queue handling thread is executing on a first processor, wherein the first I/O queue handling thread is associated with a first set of one or more queue identifiers, and wherein each queue identifier identifies a queue being handled by the first I/O queue handling thread;
• and
• responsive to determining that the preemption flag is equal to the first value, transfer the first set of the one or more queue identifiers to a second I/O queue handling thread executing on a second processor.

A method comprising:

• determining whether a preemption flag associated with a first input/output (I/O) queue handling thread is equal to a first value indicating that preemption of the first I/O queue handling thread is forthcoming, wherein the first I/O queue handling thread is executing on a first processor, wherein the first I/O queue handling thread is associated with a first set of one or more queue identifiers, and wherein each queue identifier identifies a queue being handled by the first I/O queue handling thread;
• and
• responsive to determining that the preemption flag is equal to the first value, transferring the first set of the one or more queue identifiers to a second I/O queue handling thread executing on a second processor.