The other facilties will be used to memory map the file and then accesses into the virtual memory will be analyzed. The will not be measured directly. Write The primary input into the memory mapped region is a write. Sync A request to sychronize the memory mapped region with the underlying hardware can also be treated as an input to the system. The will not be measured directly.
Description Read A read is the output of the meomry mapped region.
The current state of the disk activity is an attribute that can affect the timing of reading and writing from and to the memory mapped region. Theoretically, the busier the disk, the slower the access will be. The access size is another attribute that can have an affect on the performance of the system. Smaller access sizes force the operating system to perform the overhead associated with the access more often and thus degrades performance. Larger access sizes allow the OS to perform less overhead by grouping operations together.