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Foglight for Hyper-V 5.7.2 - User and Reference Guide

About Foglight for Hyper-V Agent administration Performance monitoring with the Hyper-V Environment dashboard Performance investigation with the Hyper-V Explorer Foglight for Hyper-V alarms Appendix: Hyper-V Agent error codes

Reviewing object instances and deleting expired data

Foglight™ collects data from monitored environments and creates a data model in real-time. The resulting topology model consists of nodes where each node is an object instance of a particular object type. Each type of monitoring environment can have a unique set of object types. Foglight for Hyper-V includes a set of topology object types and their definitions. When Foglight collects data from your Hyper-V environment, it builds the topology model that consists of the instances of the object types defined by Foglight for Hyper-V. By default, a monitored environment can result in up to 50,000 object instances being created by a single object type. This value is controlled by the foglight.limit.instances registry variable.
Registry variables have a global default value and type-specific scoped values. This means that different object types can have different instance limits.
Explore the Instances and Limits view to see the existing Hyper-V object types. To access this view, on the Hyper-V Environment dashboard, open the Administration tab, and click Review Instances and Limits.
Figure 8. Instances and Limits view
The Instances and Limits view displays the list of the existing Hyper-V object types, and for each type it shows the type name, instance limit, instance count, instance limit utilization, and the type status given as the highest severity level associated with an instance of that type. This information can give you insight into the size of your database and whether additional adjustments are required to improve your system performance. For example, if an object type results in a high number of object instances, this may result in performance bottlenecks. To prevent them, check if any of these are updated recently and, if not, delete them from the database, as described below.
To view the list of existing registry variables or to edit them, click Edit Registry Variable in the top-left corner. For complete information about registry variables in Foglight, see the Administration and Configuration Help.
For reference information about this view, see Instances and Limits view .
To review and delete expired data:
1
On the Hyper-V Environment dashboard, open the Administration tab.
2
On the Administration tab, click Review Expired Data.
The Expired Data View and Removal dialog box appears.
3
In the Expired Data View and Removal dialog box, select a category of object type that you want to review, and type the number of days during which the object instances were not updated.
For example, to view the object instances that are not updated in 30 days and are created when monitoring virtual machines, select HPVVirtual Machine, and in the Minimum days since last updated box, type 30.
4
Click Next.
The Expired Data View and Removal dialog box refreshes, showing the object instances that meet the specified requirements.
5
Observe the results.
•
If you want to delete all of the object instances, click Next.
•
If you want to modify your search, click Previous, make your changes, and observe your results again. For example, to show fewer instances, click Previous, and increase the time period. When satisfied, click Next.
•
If you do not want to delete any objects, click Next.
The Expired Data View and Removal dialog box refreshes.
6
To delete the selected object instances, select the check box.
To keep the selected object instances, ensure the check box is clear.
7
Click Finish.

Instances and Limits view

This view displays the list of the existing Hyper-V object types. This information can give you insight into the size of your database and whether additional adjustments are required to improve your system performance.
Figure 9. Instances and Limits view
Table 2. Description of the View
Data displayed
•
Instance Count. The current number of object instances of this type.
 
•
Instance Limit. The maximum number of object instances of this type that can be instantiated.
 
•
Object Type. The type of the topology object.
 
•
Status. The current status representing the highest severity level associated with an instance of that type.
 
•
Utilized. The percentage of the object limit instance that is currently utilized.

Performance monitoring with the Hyper-V Environment dashboard

A typical virtual environment contains a set of physical servers and virtual machines. A physical server can be a part of a cluster, and can have one or more virtual machines associated with it. You can view the overall state of these components on the Hyper-V Environment dashboard.
•
Accessing the Hyper-V Environment dashboard
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Monitoring tab
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About frequently asked questions
•
About reports
•
Foglight Chargeback
•
Foglight for Capacity Management
•
Foglight Resource Optimizer for Hyper-V Environments

Accessing the Hyper-V Environment dashboard

When you navigate to the Hyper-V Environment dashboard for the first time, the Monitoring tab appears. This tab provides an overall summary of your virtual environment.
Figure 10. Hyper-V Environment dashboard
To access the Hyper-V Environment dashboard:
1
Log in to the Foglight browser interface.
2
Ensure that the navigation panel is open.
To open the navigation panel, click the right-facing arrow on the left.
3
On the navigation panel, under Homes, click Hyper-V Environment.
The Hyper-V Environment dashboard appears in the display area.
The Hyper-V Environment dashboard shows summary information about the clusters, servers, and virtual machines in your environment, and additional information about each specific component.
4
Select the Clusters, Servers, Virtual Machines, SOFS Servers, SCVMM Servers, Storage, or Virtual Switches tile from the top left.
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