Disk interface comparison and operating system file-caching investigation

摘要

This paper focuses on a performance comparison of different disk interfaces on a PC architecture. Analyses are done on different Small Computer System Interface (SCSI) and ATA protocols. ISA bus standard is used only for reference. Fairness of evaluations is obtained by setting equivalent conditions, as much as possible. Measurement was done either by tests that we have created (random, sequential and real-application test) or by eminent benchmark tool. Main goals of the research are: speed comparison of different disk interfaces, efficiency of an operating system's built-in file cache and finally file caching influence on speed difference of disk interfaces.