UNIX® Fault Management: A Guide for System Administration

Using Disk Performance Data

To address disk performance problems, you first need to collect the appropriate data. MeasureWare and BMC PATROL are two examples of tools that collect the necessary performance metrics. This section provides a brief overview of how to interpret the data to determine whether a disk performance problem exists.

This chapter shows only those metrics related directly to disks. However, you should also study system and application-related performance information, because disk information alone may not be sufficient to solve a problem. MeasureWare provides a lot of information about an application's disk utilization that may need to be correlated with system data. For example, the root cause of a disk performance problem ...