Dynamic reconfiguration of queue pairs

摘要

Dynamic reconfiguration of queue pairs in a data processing system is provided. A device driver determines whether a dynamic CPU reconfiguration has added one or more CPUs to the data processing system, wherein the data processing system comprises a number of CPUs and a number of queue pairs. Responsive to the dynamic CPU configuration adding one or more CPUs, the device driver allocates a portion of a memory corresponding to a queue pair, wherein each queue pair comprises a receive queue and a transmit queue, programs a receive side scaling mechanism in a network adapter to allow for dynamic insertion of a processing engine associated with the queue pair, and enables transmit tuple hashing to the queue pair.

主权项

1. A computer program product comprising:
one or more computer-readable storage media and program instructions stored on the one or more computer-readable storage media, the program instructions comprising program instructions to: determine whether a dynamic central processor unit (CPU) reconfiguration has added one or more first CPUs to a data processing system by invoking a kernel thread that is configured to determine whether the dynamic CPU reconfiguration has added the one or more first CPUs to the data processing system; and responsive to a determination that the dynamic CPU configuration has added the one or more first CPUs:
allocate a first portion of memory corresponding to one or more first queue pairs, wherein each of the one or more first queue pairs includes a first receive queue and a first transmit queue;program a first receive side scaling mechanism in a network adapter to allow for dynamic insertion of one or more first processing engines associated with the one or more first queue pairs; andenable transmit tuple hashing to the one or more first queue pairs.