Monitor and manage your deployment 编辑

Citrix Hypervisor provides detailed monitoring of performance metrics. These metrics include CPU, memory, disk, network, C-state/P-state information, and storage. Where appropriate, these metrics are available on a per host and a per VM basis. These metrics are available directly, or can be accessed and viewed graphically in Citrix Hypervisor Center or other third-party applications.

Citrix Hypervisor also provides system and performance alerts. Alerts are notifications that occur in response to selected system events. These notifications also occur when one of the following values goes over a specified threshold on a managed host, VM, or storage repository: CPU usage, network usage, memory usage, control domain memory usage, storage throughput, or VM disk usage. You can configure the alerts by using the xe CLI or by using Citrix Hypervisor Center. To create notifications based on any of the available Host or VM performance metrics see Performance alerts.

Monitor Citrix Hypervisor performance

Customers can monitor the performance of their Citrix Hypervisor servers and Virtual Machines (VMs) using the metrics exposed through Round Robin Databases (RRDs). These metrics can be queried over HTTP or through the RRD2CSV tool. In addition, Citrix Hypervisor Center uses this data to produce system performance graphs. For more information, see Analyze and visualize metrics.

The following tables list all of the available Host and VM metrics.

Notes:

• Latency over a period is defined as the average latency of operations during that period.
• The availability and utility of certain metrics are SR and CPU dependent.
• Performance metrics are not available for GFS2 SRs and disks on those SRs.

Available host metrics

Available VM metrics

Note:

The value of <XenCenter-pif-name> can be any of the following:

NIC <pif>	If <pif> contains pif_eth#, where ## is 0–9
<pif>	If <pif> contains pif_eth#.## or pif_xenbr## or pif_bond##
<Internal> Network <pif>	If <pif> contains pif_xapi##, (note that <Internal> appears as is)
TAP <tap>	If <pif> contains pif_tap##
xapi Loopback	If <pif> contains pif_lo

Analyze and visualize metrics

The Performance tab in Citrix Hypervisor Center provides real time monitoring of performance statistics across resource pools in addition to graphical trending of virtual and physical machine performance. Graphs showing CPU, memory, network, and disk I/O are included on the Performance tab by default. You can add more metrics, change the appearance of the existing graphs or create extra ones. For more information, see Configuring metrics in the following section.

• You can view up to 12 months of performance data and zoom in to take a closer look at activity spikes.

• Citrix Hypervisor Center can generate performance alerts when CPU, memory, network I/O, storage I/O, or disk I/O usage exceed a specified threshold on a server, VM, or SR. For more information, see Alerts in the following section.

Note:

Install the Citrix VM Tools to see full VM performance data.

Configure performance graphs

To add a graph:

1. On the Performance tab, click Actions and then New Graph. The New Graph dialog box is displayed.

2. In the Name field, enter a name for the graph.

3. From the list of Datasources, select the check boxes for the datasources you want to include in the graph.

4. Click Save.

To edit an existing graph:

1. Navigate to the Performance tab, and select the graph that you would like to modify.

2. Right-click on the graph and select Actions, or click the Actions button. Then select Edit Graph.

3. On the graph details window, make the necessary changes, and click OK.

Configure the graph type

Data on the performance graphs can be displayed as lines or as areas. To change the graph type:

1. On the Tools menu, click Options and select Graphs.

2. To view performance data as a line graph, click the Line graph option.

3. To view performance data as an area graph, click the Area graph option.

4. Click OK to save your changes.

Comprehensive details for configuring and viewing Citrix Hypervisor Center performance graphs can be found in the Citrix Hypervisor Center documentation in the section Monitoring System Performance.

Configure metrics

Note:

C-states and P-states are power management features of some processors. The range of states available depends on the physical capabilities of the host, as well power management configuration.

Both host and VM commands return the following:

• A full description of the data source

• The units applied to the metric

• The range of possible values that may be used

For example:

    name_label: cpu0-C1
    name_description: Proportion of time CPU 0 spent in C-state 1
    enabled: true
    standard: true
    min: 0.000
    max: 1.000
    units: Percent
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