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Lund Performance Solutions


SOS Disk Controller I/O Summary

The Disk Controller I/O Summary Screen

The Disk Controller I/O Summary screen displays a tabular summary of I/O activity for each disk controller on the system.


Figure 13.1 SOS Disk Controller I/O Summary screen
To access the Disk Controller I/O Summary screen from any SOS display screen:
  • Type s from the SOS Enter command: prompt to view the Screen Selection Menu screen.
  • From the Screen Selection Menu screen, enter r (Disk Controller I/O Summary). The Disk Controller I/O Summary screen will display (refer to Figure 13.1).
  • Disk Controller I/O Summary Screen Display Items

    DISK CONTROLLER I/O SUMMARY

    The data items in the Disk I/O Summary screen are described in the following table.
    Table 13.1 SOS DISK CONTROLLER I/O SUMMARY data items
    Data Item
    Description
    Dev
    The device identification number for each disk controller on the system.
    I/O%
    The percentage of all disk I/Os on the system performed by each disk controller during the interval.
    Physical Read/s
    The number of physical reads per second performed by each disk controller during the interval.
    Physical Write/s
    The number of physical writes per second performed by each disk controller during the interval.
    TOTALS
    Sums up the activities of all disk controllers for the interval.

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