Abstract: Various technologies and techniques are disclosed for improving performance of parallel scans. Disk head randomization that occurs when performing a parallel scan is minimized by assigning a worker entity to each disk involved in the parallel scan, and by ensuring data is only accessed on a respective disk by the worker entity assigned to the disk. A parallel scan can be performed that is NUMA aware by ensuring a particular sub-set of data is resident in the same memory node during each parallel scan, and by ensuring the particular sub-set of data is processed by a worker entity assigned to a node in which the sub-set of data is resident. A process for performing a parallel scan involves breaking up work into sub-sets, assigning work to each worker entity that corresponds to a respective disk, and having the worker entities process the assigned work to complete the parallel scan.

Abstract: An operating system is provided. The system includes an agent component to monitor computer activities between one or more single-item access components (SIAC) and one or more set-based access components (SBAC). An interface component is employed by the agent component to process kernel mode requests from a user mode application when communicating with a storage platform. Re-try components can be provided to facilitate cooperation between the SIAC and the SBAC.

Abstract: Various technologies and techniques are disclosed for improving performance of parallel scans. Disk head randomization that occurs when performing a parallel scan is minimized by assigning a worker entity to each disk involved in the parallel scan, and by ensuring data is only accessed on a respective disk by the worker entity assigned to the disk. A parallel scan can be performed that is NUMA aware by ensuring a particular sub-set of data is resident in the same memory node during each parallel scan, and by ensuring the particular sub-set of data is processed by a worker entity assigned to a node in which the sub-set of data is resident. A process for performing a parallel scan involves breaking up work into sub-sets, assigning work to each worker entity that corresponds to a respective disk, and having the worker entities process the assigned work to complete the parallel scan.

Abstract: An operating system is provided. The system includes an agent components (SIAC) and one or more set-based access components (SBAC). An interface component is employed by the agent component to process kernel mode requests from a user mode application when communicating with a storage platform. Re-try components can be provided to facilitate cooperation between the SIAC and the SBAC.