The Hosts view is a display of all the virtualization hosts associated with all hypervisor connections that have been added to the console. This view includes a wealth of performance counters that are retrieved directly from the hypervisor. This gives you the ability to see the performance statistics of the host directly, without having to install or run the hypervisor management program. This can be very helpful for first-level or first contact hypervisor troubleshooting.

Hosts View Column Reference

Some VMware host statistics require statistics level 3 to be defined in vCenter. For more information on setting statistics levels in vCenter, please refer to the appropriate VMware documentation.
Some XenServer statistics require XenServer v6.2 or v6.1 with the Performance Monitoring Enhancement Pack, CTX135033.

Active Memory Sum of all memory that is actively used for all VMs, including vSphere services on the host. (VMware only)  
Consumed Memory The total consumed memory for all running virtual machines. (for VMware hosts, this includes memory used by the Service Console, the VMkernel, and vSphere services)  
CPU Cores Total number of CPU cores in the host.  
CPU Sockets Total number of physical processors in the host.  
CPU Usage % Actively used CPU cycles of the host as a percentage of the total available CPU cycles on the host.  
Datastore R/W IOPs Aggregate number of IO operations on the datastore. The value displayed belongs to the datastore with the highest number of IOPs
(Xen: off by default – must enable on all SRs on all hosts [xe host-data-source-record data-source=iops_total_<sr-short-uuid> uuid=<host-uuid> ] )
 
Datastore Read latency Average amount of time for a read operation from the VMware datastore. The value displayed belongs to the datastore with the highest read latency. (VMware only)  
Datastore Read Rate Rate of reading data from the datastore or SR. The value displayed belongs to the datastore with the highest read rate.
(Xen: off by default – must enable on all SRs on all hosts [xe host-data-source-record data-source=io_throughput_read_<sr-short-uuid> uuid=<host-uuid> ] )
 
Datastore Write latency Average amount of time for a write operation to the VMware datastore. The value displayed belongs to the datastore with the highest write latency. (VMware only)  
Datastore Write Rate Rate of writing data to the datastore or SR. The value displayed belongs to the datastore with the highest write rate.
(Xen: off by default – must enable on all SRs on all hosts [xe host-data-source-record data-source=io_throughput_write_<sr-short-uuid> uuid=<host-uuid> ] )
(VMware 4.1: requires statistics level 3)
 
Disk device latency Average amount of time, in milliseconds, to complete a SCSI command from the physical device (block storage only). The value displayed belongs to the disk with the highest latency. (VMware only)  
Disk kernel latency Average amount of time, in milliseconds, spent by the VMkernel processing each SCSI command (block storage only). The value displayed belongs to the disk with the highest latency. (VMware only)  
Disk Queue Depth Average amount of time spent in the VMkernel queue, per SCSI command, during the collection interval (block storage only). The value displayed belongs to the disk with the highest latency.
(Xen: disabled by default – must enable on all SRs on all hosts [xe host-data-source-record data-source=avgqu_sz_<sr-short-uuid> uuid=<host-uuid> ] )
 
Hypervisor Type Hypervisor type  
Hypervisor Version Hypervisor version  
Installed Memory The amount of physically installed RAM on the host.  
Max Datastore Free Space Amount of free space available on the least occupied datastore or SR.  
Min Datastore Free Space Amount of free space available on the most occupied datastore or SR.  
NIC dropped received packets Number of received packets dropped during the collection interval.
(Xen: disabled by default – must enable for each NIC to track (eth0, eth1, etc) [xe host-data-source-record data-source=pif_eth0_rx_errors uuid=<host-uuid> ] )
 
NIC dropped transmitted packets Number of transmitted packets dropped during the collection interval.
(Xen: disabled by default – must enable for each NIC to track (eth0, eth1, etc) [xe host-data-source-record data-source=pif_eth0_tx_errors uuid=<host-uuid> ] )
 
NIC Usage Sum of data transmitted and received across all physical NIC instances connected to the host.  
Running VM Count Number of VMs running on this host.  
Storage Repository total latency Average amount of time for an operation (read or write) to the XenServer SR. The value displayed belongs to the SR with the highest latency. (XenServer only)
(Xen: disabled by default – must enable on all SRs on all hosts [xe host-data-source-record data-source=latency_<sr-short-uuid> uuid=<host-uuid> ] )
 
Unmanaged VM Count Number of VMs on the host that are not managed by ControlUp.  
  vCPU/pCPU Ratio Indicates the CPU overcommitment ratio
VM Count Number of VMs assigned to this host.  
         

Objects in the Hypervisors folder

All objects (pools, datacenters, clusters, etc) in the Hypervisors branch of the organization tree behave as folders for the purpose of organizing the view of hosts and computers. As such, you can focus on any object in order to view only the hosts, computers, and other items, just as you can do in other ControlUp folders.

Folders in the Hypervisors branch of the organization tree exist to organize or segregate the hypervisor connections, if desired.

 

Drill down behavior for hosts

When you are in the Hosts View, if you double-click on a host it shows the VMs that are guests on that host. The list of computers shown varies slightly, depending on which hypervisor you are connected to.

  • In a VMware environment, you will see all of the VMs associated with that host, whether or not they are powered on, just as you would in the vSphere client.
  • In a XenServer environment, you will see VMs running on that host as well as VMs with an affinity for that host, whether or not they are powered on. VMs that are powered off and have no host affinity will not be seen when double-clicking on a host just as you would see in XenCenter, where they belong to the pool itself and not a host. In order to see all of the VMs in a XenServer pool regardless of power state or affinity, focus on the XenServer pool, and choose the Computers View without double-clicking on the Xen hosts in that pool.