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Foglight for Hyper-V 5.7.7 - 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

Volume view

The Volume view shows the data transfer rates and latency detected for the selected volume. It also identifies the virtual machines that use the highest amounts of the volume resources.The information provided on this tab can help you prevent potential bottlenecks by reallocating disk resources where they are most needed.

This view appears in the display area when you click in the Volume Summary view.

Figure 129. Volume view

This view is made up of the following embedded views:

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Cluster Shared Volume Performance
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Cluster Shared Volume Total I/O and Latency
 
Table 78. Cluster Shared Volume Performance
Description

Shows the amount of the volume I/O resources used by the virtual machines associated with the selected volume.

Data displayed
•
I/O Distribution. A pie chart indicating how much each virtual machine associated with the selected volume contributes to the overall use of I/O resources.
 
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VM Offenders, Hyper-V Server. The name of the Hyper-V server on which the virtual machine is running.
 
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VM Offenders, I/O. The rate at which the virtual machine writes to and reads from the volume.
 
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VM Offenders, IOps. The number of disk read and write operations the virtual machine performed from the beginning of the selected time range.
 
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VM Offenders, Latency. The latency rate detected for the disk read and write operations the virtual machine performed from the beginning of the selected time range.
 
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VM Offenders, Name. The name of the virtual machine.
Where to go next

Drill down on:

 
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VM Offenders, Hyper-V Server. Shows the Hyper-V server details in the Hyper-V Explorer Summary tab.
 
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VM Offenders, Name. Shows the virtual machine details in the Hyper-V Explorer Summary tab.
 
Table 79. Cluster Shared Volume Total I/O and Latency
Description

Displays the data transfer rates and latency detected for the selected volume.

Data displayed
•
Avg/Peak I/O. The average and peak data transfer rates detected for the selected volume.
 
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Avg/Peak Latency. The average and peak latency rates detected for the selected volume.
 
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Latency. The latency detected for the selected volume over the selected time range.
 
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Throughput. The data transfer rates detected for the selected volume over the selected time range.
 
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Volume. The name of the selected volume and its alarm state.

Virtual switch monitoring

A Hyper-V Virtual Switch is a software-based layer-2 Ethernet network switch. The switch connects virtual machines to virtual and physical networks.

To review data collected about a specific volume or all volumes, make your selection in the Quick-View.

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Virtual Switches view
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Summary - All Virtual Switches view
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Summary - Virtual Switch view
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Virtual Switch Topology view

Virtual Switches view

The Virtual Switches tree view lists the available volumes and indicates their severity state.

This view appears in the Quick-View on the left when you select the Virtual Switches tile in the Virtual Environment view.

Figure 130. Virtual Switches view

Selecting the All Virtual Switches node displays the overall resource utilization for all virtual switches in your integrated system and identifies the ones that consume the highest amount of network resources in the Summary - All Virtual Switches view on the right. Similarly, selecting a virtual switch node shows switch-specific metrics in the Summary - Virtual Switch view.

 
Table 80. Description of the View
Data displayed
•
Alarm severity. The state of the most recent alarm raised against the virtual switch.
 
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All Volumes. A parent node for the instances of all virtual switches that appear in this view.
 
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Volume. The name of the virtual switch.
Where to go next

Drill down on:

 
•
All Volumes. Shows the Summary - All Virtual Switches view in the Quick-View.
 
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Volume. Shows the Summary - Virtual Switch view in the Quick-View.

Summary - All Virtual Switches view

The Summary - All Virtual Switches view displays overall resource utilization information for a group of virtual switches and identifies the ones that consume the highest amounts of system resources, potentially causing performance bottlenecks.

This view appears in the Quick-View on the left when you select All Virtual Switches in the Virtual Environment view.

Figure 131. Summary - All Virtual Switches view

This view is made up of the following embedded views:

•
Alarms
•
Top Bandwidth Consumers
•
The Highest Number of Ports
•
Top Overall Utilization
•
Top Packets per Second
 
 
Table 81. Alarms
Description

Lists the alarms generated against the monitored virtual switches.

Data displayed
•
Alarm Message. An explanation about why the alarm occurred.
 
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Severity. Indicates the alarm severity: Warning, Critical, or Fatal.
 
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Time. The time at which the alarm was generated.
Where to go next

Drill down on:

 
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Alarm Message, Severity, or Time. Displays the Alarm dialog box, showing additional information about the alarm. For more information about alarms in Foglight, see the Foglight User Help.
Figure 132. Alarm dialog box
 
Table 82. Top Bandwidth Consumers
Description

Identifies the virtual switches with the highest percentage of network utilization.

Data displayed
•
Top Bandwidth Consumers chart. For each identified virtual switch, the chart displays the percentage of network resources available to it that are in use over the selected time period.
 
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Utilization. The percentage of network resources available to the virtual switch that is currently in use.
 
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Virtual Switches. The name of the virtual switch identified amongst top bandwidth consumers.
Where to go next

Drill down on:

 
•
Virtual Switch or Utilization. Shows the virtual switch details in the Summary - Virtual Switch view.
 
Table 83. The Highest Number of Ports
Description

Identifies the virtual switches with the highest numbers of available ports.

Data displayed
•
Ports. The number of ports available on the virtual switch.
 
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The Highest Number of Ports chart. For each identified virtual switch, the chart displays the number of available ports.
 
•
Virtual Switches. The name of the virtual switch.
Where to go next

Drill down on:

 
•
Virtual Switch or Ports. Shows the virtual switch details in the Summary - Virtual Switch view.
 
Table 84. Top Overall Utilization
Description

Identifies the virtual switches with the highest network transfer rates.

Data displayed
•
Throughput. The current rate of network throughput for the selected virtual switch.
 
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Top Overall Utilization chart. For each identified virtual switch, the chart displays the network throughput rate over the selected time period.
 
•
Virtual Switches. The name of the virtual switch identified amongst top network consumers.
Where to go next

Drill down on:

 
•
Virtual Switch or Throughput. Shows the virtual switch details in the Summary - Virtual Switch view.
 
Table 85. Top Packets per Second
Description

Identifies the virtual switches with the highest data packet traffic.

Data displayed
•
Packets per Second. The average rate of the data packets that are sent to the virtual switch.
 
•
Top Packets per Second chart. Identifies the virtual switches with the highest rates of data packet traffic over the selected time period.
 
•
Virtual Switches. The name of the virtual switch identified as having a high rate of data packet traffic.
Where to go next

Drill down on:

 
•
Virtual Switch or Packets per Second. Shows the virtual switch details in the Summary - Virtual Switch view.
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