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	N/A	The device identification number for the disk controller.
I/O%	N/A	The percentage of all disk I/Os on the system performed by each disk controller.
Phy rt (/s)	Read	The number of physical reads/writes per second performed by each disk controller during the interval.
	Write
User Rt (/s)	Read	User reads/writes per second (see "user I/O").
	Write
Sys Rt (/s)	Read	System reads/writes per second (see "system I/O").
	Write
VM Rt (/s)	Read	Virtual memory reads/writes per second (see "virtual memory I/O").
	Write
Raw Rt (/s)	Read	Raw memory reads/writes per second (see "raw I/O").
	Write
TOTALS	N/A	The TOTALS line sums up the activities of all disk controllers for the interval.