Open-source Xen metrics
Xen Host Configuration
The Xen Host Configuration metric group provides configuration information for open source (non-Citrix) Xen hosts.
The following table describes the Xen Host Configuration metric group.
Metric and available units | Description |
|---|---|
Threads per Core | The number of threads per CPU core. |
Cores per Socket | The number of CPU cores per socket. |
Sockets per Node | The number of CPU sockets per node. |
Nodes | The number of NUMA cells on this host. |
Clock Rate | The expected CPU frequency in MHz. |
Total Memory | The memory size in kilobytes (Actual physical RAM on the machine). |
Active CPUs | The number of active CPUs. |
CPU Model | A string indicating the CPU type (for example, i686). |
Scheduler | The name of the system scheduler. |
Hypervisor Version | The hypervisor version number. |
API Version | The version of the API used by the virtualization layer. |
Library Version | The version of the libvirt library used on this host. |
Xen Domain Configuration
The Xen Domain Configuration metric group provides configuration information for open source (non-Citrix) Xen domains.
The following table describes the Xen Domain Configuration metric group.
Metric and available units | Description |
|---|---|
Domain Name | Set when the domain is created and has no real correlation to the network name. |
Domain ID | The domain numbers that this guest or domain is running as. |
Available VCPUs | The maximum number of virtual CPUs the guest was booted with. |
Online VCPUs | The number of virtual CPUs currently in use by the domain. |
Total Memory | The maximum allowed memory, in kilobytes. |
State | The run state of the domain. |
UUID | The UUID of this domain. |
MAC Address | The first MAC Address that can be found; can be used to identify the domain. |
Credit Weight | The Xen credit weight assigned to this domain. |
Credit Cap | The Xen credit cap set for this domain. |
Operating System | The name of the operating system that is running on the virtual machine or domain |
Xen Domain Statistics
The Xen Domain Statistics metric group provides statistics for open source (non-Citrix) Xen domains.
The following table describes the Xen Domain Statistics metric group.
Metric and available units | Description |
|---|---|
Domain Name | Set when the domain is created and has no real correlation to the network name. |
Domain ID | The domain number this guest or domain is running as; provides a way to correlate this domain with a Xen Domain Configuration. |
Total Memory | The memory, in kilobytes, allocated to the domain (essentially a duplicate from Domain Configuration). |
Used Memory | The memory, in kilobytes, used by the domain. |
Free Memory | The amount of memory still available on the domain; this is a calculated field. |
CPU Time | The amount of CPU time used by this domain, expressed in seconds. |
Uptime | The length of time the system has been booted. |
Memory Ratio | The ratio of Used Memory to Total Memory; this is a calculated field. |
Memory Utilization | The Memory Ratio expressed as a percentage. |
Xen VCPU Statistics
The Xen VCPU Statistics metric group provides virtual CPU statistics for open source (non-Citrix) Xen systems.
The following table describes the Xen VCPU Statistics metric group.
Metric and available units | Description |
|---|---|
VCPU ID | The virtual CPU identifier. |
Domain ID | The domain number this guest or domain is running as; provides a way to correlate this domain with a Xen Domain Configuration. |
Domain Name | Set when the domain is created and has no real correlation to the network name. |
CPU Time | The amount of time that the virtual CPU was busy, expressed in seconds. |
Real CPU ID | The physical CPU ID. |
State | The state of the virtual CPU. |
Xen Disk Statistics
The Xen Disk Statistics metric group provides disk statistics for open source (non-Citrix) Xen systems.
The following table describes the Xen Disk Statistics metric group.
Metric and available units | Description |
|---|---|
Disk Name | The name of the disk as reported by the Xen Hypervisor. |
Domain ID | The domain number this guest or domain is running as; provides a way to correlate this domain with a Xen Domain Configuration. |
Domain Name | Set when the domain is created and has no real correlation to the network name. |
Read Bytes | The average number of bytes read from the disk. |
Write Bytes | The average number of bytes written to the disk. |
Total I/O | The average number of Read Bytes plus Write Bytes. |
Total I/O Kbs | The average I/O rate, expressed in kilobytes per second. |
Read Requests | The total number of read requests. |
Write Requests | The total number of write requests. |
Total Requests | The sum total of read and write requests. |
Xen Network Interface Statistics
The Xen Network Interface Statistics metric group provides network interface statistics for open source (non-Citrix) Xen systems.
The following table describes the Xen Network Interface Statistics metric group.
Metric and available unit | Description |
|---|---|
Interface Name | The Network Interface name, as returned by the Xen hypervisor. |
Domain ID | The domain number this guest or domain is running as; provides a way to correlate this domain with a Xen Domain Configuration. |
Domain Name | Set when the domain is created and has no real correlation to the network name. |
Mac Address | The MAC (48-bit) address of the Ethernet network card. |
In Packets | Packets received. |
Out Packets | Packets sent. |
In Errors | Input errors. |
Out Errors | Output errors. |
In Bytes | The number of bytes received by the network interface card. |
Out Bytes | The number of bytes transferred by the network interface card. |
In Drop | Incoming packets dropped. |
Out Drop | Outgoing packets dropped. |
Error Count | Total errors. |