Tracking statistics corresponding to data access in a computer system

A computer program product for determining statistics corresponding to data transfer operations, the 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 monitor a direct memory access (DMA) data transfer operation between an input/output (I/O) device and a memory,
• wherein the program instructions to monitor the DMA data transfer operation includes program instructions to determine statistics, during execution the DMA data transfer operation, corresponding to the monitored DMA data transfer operation;
• program instructions to track, during execution the DMA data transfer operation, the determined statistics corresponding to the monitored DMA data transfer operation in a cumulative tracking record that includes data corresponding to DMA data transfer operations that are performed in a system over a period of time;
• and
• program instructions to determine recommendations of configurations of I/O devices in a data processing environment, based on tracked amounts of data transferred during DMA data transfer operations between I/O devices and memory in the data processing environment, wherein the determined recommendations of configurations optimize placement of I/O devices to increase data throughput and response time.

A computer system for determining statistics corresponding to data transfer operations, the computer system comprising:

• one or more computer processors;
• one or more computer readable storage media;
• and
• program instructions stored on the computer readable storage media for execution by at least one of the one or more processors, the program instructions comprising:
• program instructions to monitor a direct memory access (DMA) data transfer operation between an input/output (I/O) device and a memory,
• wherein the program instructions to monitor the DMA data transfer operation includes program instructions to determine statistics, during execution the DMA data transfer operation, corresponding to the monitored DMA data transfer operation;
• program instructions to track, during execution the DMA data transfer operation, the determined statistics corresponding to the monitored DMA data transfer operation in a cumulative tracking record that includes data corresponding to DMA data transfer operations that are performed in a system over a period of time;
• and
• program instructions to determine recommendations of configurations of I/O devices in a data processing environment, based on tracked amounts of data transferred during DMA data transfer operations between I/O devices and memory in the data processing environment, wherein the determined recommendations of configurations optimize placement of I/O devices to increase data throughput and response time.