V Sentry Performance Metrics

This article covers the various performance metrics displayed by the Performance Analysis Dashboard and Performance Analysis Overview, and how to interpret different metric values and combinations of values across different metrics for V Sentry.

Note:  For Mode: S = Sample and H = History.

Important:  We are actively adding information to the performance metrics tables to complete data for undefined metrics.

VMware Host Metrics

VMware Host Metrics

SectionMetricDescription
NetworkINThe percent of network bandwidth across the VMHost used for downloads.
Mode: S, H
Type:
Percent
Warning range:
Critical range:
May correlate:
NetworkOUTThe percent of network bandwidth across the VMHost used for uploads.
Mode: S, H
Type:
Percent
Warning range:
Critical range:
May correlate:
CPU UsageTotal CPUThe total amount of CPU used across the VM as a percent.
Mode:
Type:

Warning range:
Critical range:
May correlate:
CPU UsageCo-stop %Co-Stop time measures when a virtual machine is ready to run, but unable to run due to co-scheduling constraints. See blog on VMware Advisory Conditions in SentryOne for more information.
Mode:
Type:

Warning range:
Critical range:
May correlate:
CPU UsageReady Time %Percentage of time when a vCPU is ready to do work, but must wait for the hypervisor to schedule that work on one or more physical CPUs. CPU ready time is a summation, and is dependent on the number of virtual machines on the host and their CPU loads. See the blog on VMware Advisory Conditions in SentryOne for more information.
Mode: S, H
Type:
Percent
Warning range:
Critical range:
May correlate:
System MemoryActiveAmount of memory that is actively used, as estimated by VMkernel based on recently touched memory pages.
Mode: S, H
Type:
MB
Warning range:
Critical range:
May correlate:
System MemoryConsumedAmount of machine memory used on the host. Consumed memory includes memory used by the service console, the VMkernel, vSphere services, and the total consumed metrics for all running virtual machines.
Mode: S, H
Type:
MB
Warning range:
Critical range:
May correlate:
System MemoryOverheadTotal of all overhead metrics (including VM overhead and VMKernel overhead) for powered-on virtual machines, and the overhead of running vSphere services on the host.
Mode: S, H
Type:
MB
Warning range:
Critical range:
May correlate:
System MemoryGrantedAmount of machine memory or physical memory that's mapped for the host.
Mode: S, H
Type:
MB
Warning range:
Critical range:
May correlate:
System MemoryAvailableAmount of machine memory or physical memory that's available for the host.
Mode: S, H
Type:
MB
Warning range:
Critical range:
May correlate:
System MemorySwap InThe percentage of memory read in by the VMkernel swap file from memory to disk across all the virtual machines on the VMHost.
Mode: S, H
Type:
Percent
Warning range:
Critical range:
May correlate:
System MemorySwap OutThe percentage of memory written by the VMKernel swap file from memory across all the virtual machines on the VMHost.
Mode: S, H
Type:
Percent
Warning range:
Critical range:
May correlate:
Disk IOms/ Read by DatastoreThe amount of time it takes in milliseconds for the VMHost to read data from each Logical Unit Number (LUN) on the datastore.
Mode: S, H
Type:
ms
Warning range:
Critical range:
May correlate:
Disk IOms/ Write by DatastoreThe amount of time it takes in milliseconds for the VMHost to write data from each Logical Unit Number (LUN) on the datastore.
Mode: S, H
Type:
ms
Warning range:
Critical range:
May correlate:
Disk IOMB/sec Read by DatastoreThe amount of data in megabytes read by the VMHost from each Logical Unit Number (LUN) on the datastore per second.
Mode: S, H
Type:
MB
Warning range:
Critical range:
May correlate:
Disk IOMB/sec Write by DatastoreThe amount of data in megabytes written to the VMHost from each Logical Unit Number (LUN) on the datastore per second.
Mode: S, H
Type:
MB
Warning range:
Critical range:
May correlate:
VMware Guest Metrics

VMware Guest Metrics

SectionMetricDescription
Network (VM)IN per GuestThe amount of network bandwidth in megabytes per second used for downloads by the VM Guest(s).
Mode: S, H
Type:
MB per second
Warning range:
Critical range:
May correlate:
Network (VM)OUT per GuestThe amount of network bandwidth in megabytes per second used for uploads by the VM Guest(s).
Mode: S, H
Type:
MB per second
Warning range:
Critical range:
May correlate:
CPU Usage (VM)

Utilization Per Guest

The percentage of CPU used by the VM per guest.
Mode: S, H
Type:
Percentage
Warning range:
Critical range:
May correlate:
System Memory (VM)Utilization per GuestThe amount of system memory in megabytes actively used by each VM Guest.
Mode: S, H
Type:
MB
Warning range:
Critical range:
May correlate:
Disk IO (VM)ms/Read per VMThe average amount of time it takes in milliseconds for the VM to read data from the virtual disk.
Mode: S, H
Type:
ms
Warning range:
Critical range:
May correlate:
Disk IO (VM)ms/Write per VMThe average amount of time it takes in milliseconds for the VM to write data to the virtual disk.
Mode: S, H
Type:
ms
Warning range:
Critical range:
May correlate:
Disk IO (VM)MB/sec Read per VMThe average amount of data used for reads by each VM in megabytes per second.
Mode: S, H
Type:
MB per second
Warning range:
Critical range:
May correlate:
Disk IO (VM)MB/sec Write per VMThe average amount of data used for writes by each VM in megabytes per second.
Mode: S
Type:
MB per second
Warning range:
Critical range:
May correlate: