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Foglight for VMware 5.7.7 - User and Reference Guide

Using VMware Monitoring in Foglight for Storage Management Reference Appendix: Alarm Messages Appendix: Metrics

VMW ESX Server Total Latency

This rule fires when the total command latency (that is, the time taken during the collection interval to process a SCSI command issued by the guest OS to the virtual machine or the sum of kernelLatency and deviceLatency, based on data from the seven days prior to yesterday) of an ESX Server physical disk exceeds the normal operating range.

VMWESXServerPhysicalDisk

Table 60. Rule Definition

The total command latency is less than 25 milliseconds.

Normal

None

The total command latency is 25 milliseconds or greater, but no greater than 34 milliseconds.

Warning

None

The total command latency is 35 milliseconds or greater, but no greater than 39 milliseconds.

Critical

Send email to VMware administrator

The total command latency is 40 milliseconds or greater.

Fatal

Send email to VMware administrator

VMW ESX Server Total Latency Deviation

This rule fires when the total command latency (that is, the time taken during the collection interval to process a SCSI command issued by the guest OS to the virtual machine or the sum of kernelLatency and deviceLatency, based on data from the seven days prior to yesterday) of an ESX Server physical disk exceeds the normal operating range, using deviation.

VMWESXServerPhysicalDisk

Table 61. Rule Definition

The total command latency is no more than 2.2 standard deviations from the mean total command latency.

Normal

None

The total command latency is more than 2.2 but no more than 2.8 standard deviations from the mean total command latency.

Warning

None

The total command latency is more than 2.8 standard deviations from the mean total command latency.

Critical

Send email to VMware administrator

VirtualCenter Rules

This section describes the VirtualCenter rule. This rule is disabled by default, and can be enabled as required:

VMW VirtualCenter Disk IO

This rule monitors for spikes and dramatic drops in disk IO for a VirtualCenter.

VMWVirtualCenter

Table 62. Rule Definition

The disk usage is no more than 2.2 standard deviations (NumSTDevs) from the mean disk usage.

Normal

None

The disk usage is more than 2.2 but no more than 2.8 standard deviations from the mean disk usage.

Warning

None

The disk usage is more than 2.8 standard deviations from the mean disk usage.

Critical

None

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