Optimizing AIX 5L performance, Tuning disk performance, Part 1

Disk I/O overview and long-term monitoring tools (sar, nmon, and topas)

From the developerWorks archives

Ken Milberg

Date archived: December 19, 2016 | First published: July 10, 2007

Learn more about direct I/O, concurrent I/O, asynchronous I/O, and best practices for each method of I/O implementation. This three-part series on the AIX® disk and I/O subsystem focuses on the challenges of optimizing disk I/O performance. While disk tuning is arguably less exciting than CPU or memory tuning, it is a crucial component in optimizing server performance. In fact, partly because disk I/O is your weakest subsystem link, you can do more to improve disk I/O performance than on any other subsystem.

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