SOS

The Real-time Performance Data Utility

SOS is the character-based tool that will monitor and report system performance on-line and in real time.

Figure 4.1 shows the Global Summary screen, the initial screen displayed in SOS.

Figure 4.1 SOS Global Summary screen

Data Screens

The SOS application generates a variety of useful data screens. Each screen is listed in "SOS Screen Selection Menu", then described in detail in Chapters 9  through 28 .

Screen Conventions

The conventions used in SOS data screens are listed and described in the next table.

Table 4.1 SOS screen conventions

Convention	Description
/	A forward slash character (/) indicates a rate. For example, "Packet In /s" denotes "Packets In per second".
***	Three consecutive asterisk characters (***) indicates a data value that cannot be converted by SOS, because the value is less than or greater than the eligible range.
[nnn.n ]	When applicable and possible, cumulative averages are displayed in brackets ([ ]) next to the current interval values. For further information about cumulative averages, see "Displaying Cumulative Statistics".
b	A "b" indicates the corresponding value is measured in bytes.
k	A "kb" indicates the corresponding value is measured in kilobytes.
m	An "m" indicates the corresponding value is measured in megabytes.
g	A "g" indicates the corresponding value is measured in gigabytes.
ms	"ms" indicates the corresponding value is measured in milliseconds.
s	An "s" indicates the corresponding value is measured in seconds.
min	"min" indicates the corresponding value is measured in minutes.