
128 Netfinity and Windows 2000 Integration Guide
Performance Logs and Alerts gives you the following functions:
• Counter logs
Enables you to create a log file with specific objects and counters you select.
This log file can be saved in a number of different file formats for use later in
database and spreadsheet applications. Scheduling is another option you can
set on each log that you create.
• Trace logs
Generated when the user selects a trace data provider. Trace logs differ from
counter logs in that they measure data continuously rather than at specific
intervals that can be set to seconds or minutes.
• Alerts
Lets you create alerts based on objects and counters. An alert can be sent to
a machine, or the application event log, or it can trigger a counter log to start,
or to run a program from the command line. The criterion to send an alert is
when the alert value is under or over a limit you specify.
7.3 Objects, counters, and instances
These items allow you to narrow your focus to the aspects of performance you
want.
• Objects
An object in System Monitor is any component that generates performance
data. There are many objects built into Windows 2000. Each hardware
component in your system is an object. Processor, memory, hard drives,
network cards, and other components are classified as objects in System
Monitor. Objects are not only hardware components but also software
components. Terminal services, database servers, e-mail servers, and other
software installed on your system have objects in System Monitor.
• Counters
Each object provides counters on each aspect of a system, service, or
application. For example, for the Processor object, the available counters
include:
– % Processor Time
– %UserTime
– Interrupts/sec
– % Interrupt Time
• Instances
We know that an object has many counters. A counter can have multiple
instances. This means there can be more than one of the same counter for
that object. In a multiprocessor system when the Processor object is selected
and the % Processor Time counter is selected there are multiple instances
shown on the right for each processor as seen in Figure 118:
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