Performance monitors are data collection jobs that collect metrics for measuring the
performance of storage systems and switches. You can create performance monitors in IBM Spectrum®
Control when you add resources for monitoring or at a
later time.
To create performance monitors, you must have Administrator
privileges.
To create performance monitors for resources in your environment,
you can use the list and detail pages for the resources. For example,
to create performance monitors for switches, use the Switches page. You can create performance monitors for multiple resources
at the same time.Restrictions:
- You can define only one performance monitor for a resource.
- You can create performance monitors for the following resources
only:
- Storage systems
- Switches that are managed by a CIM agent
-
From the menu bar, go to a resource list page for a resource type.
For example, to create performance monitors for storage systems, go to and select the type of storage system you want to monitor.
- Locate the resources that you want to monitor.
- Select the resource rows and click .
- On the Data Collection Schedule window,
set the performance monitors to Enabled.
You can set a performance monitor to Enabled only
if the probe is set to Enabled.
- Select the interval for the performance monitors, and click Save.
The interval represents the number of minutes over which samples
of performance data are averaged. If you are creating performance
monitors for multiple resources, the interval list displays the performance
monitor intervals that are common to all resources.
For
example, you select two storage systems. Storage_System_a specifies
performance monitor intervals of 5 minutes, 10 minutes, and 15 minutes. Storage_System_b specifies
intervals of 10 minutes, 15 minutes, and 20 minutes. The interval
list displays intervals of 10 minutes and 15 minutes.
Restrictions:
Note the following restrictions when you create performance monitors:
- If you specify a 1-minute interval for performance monitors, data collection samples
might be inconsistent lengths. The inconsistent lengths occur because it might take longer
than 1 minute to collect the data on some systems. The inconsistent lengths can cause the
data in the historical line chart to be misleading. This problem can also occur for the
5-minute summary chart when a 1-minute interval was specified for data collection.
Check
the messages in the job log to determine the length of time that data collection takes for
a resource. If the data collection takes longer than 1 minute, consider changing the
interval to 5 minutes. You can use a 1-minute interval when you want to troubleshoot a
resource.
- If you specify a 1-minute interval, the amount of data that is stored in the database
repository increases significantly. IBM Spectrum
Control stores only 7 days of sample data
that is collected at 1-minute intervals.
Performance monitors are created for the resources that are
selected, and that meet the criteria. For example, you select three
storage systems, Storage_System_a, Storage_System_b,
and Storage_System_c. You enable the performance
monitors and set the interval field. When you click Save,
performance monitors are created for Storage_System_a and Storage_System_b. Storage_System_c is
not affected by the action because you cannot configure performance
monitors for that storage system.If a successful probe run is completed
for a resource, the performance monitor runs according to the defined
interval.
To check the progress of a performance monitor, you can complete
the following actions:
- From the resource list page, right-click a resource row, and select . You can view detailed informational,
warning, and error messages that are related to the performance monitor.
Use this information to troubleshoot any errors that might occur when
the performance monitor runs.
- View the Performance Monitor Status column on the resource list
page.