Which metric in the Exhibit would identify high latency for a storage device?

The correct answer is B. DAVG/cmd. The esxtop storage latency metrics distinguish between where latency originates, and DAVG specifically isolates the physical device response time.

Section 7 – Administer and Analyze vSphere 6.5 Performance

Question

Exhibit

Options

AKAVG/cmd
BDAVG/cmd
CGAVG/cmd
DQAVG/cmd

How the community answered

(44 responses)

A
5% (2)
B
91% (40)
C
2% (1)
D
2% (1)

Why each option

The esxtop storage latency metrics distinguish between where latency originates, and DAVG specifically isolates the physical device response time.

AKAVG/cmd

KAVG/cmd reflects latency introduced by the VMkernel storage stack itself, not the physical storage device.

BDAVG/cmdCorrect

DAVG/cmd (Device Average latency per command) measures the time in milliseconds that the physical storage device takes to process an I/O request, making it the definitive indicator of high latency at the storage hardware level.

CGAVG/cmd

GAVG/cmd is the sum of DAVG and KAVG, representing total guest-observed latency - it does not isolate device-level latency specifically.

DQAVG/cmd

QAVG/cmd measures time an I/O request spends waiting in the VMkernel queue before being dispatched, which reflects scheduling delays rather than device performance.

Concept tested: esxtop storage latency metric interpretation

Source: https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-monitoring-performance/GUID-2A3A952C-4B8F-4B85-9B2C-B1C1F4F1E6EB.html

Topics

#DAVG#storage latency#esxtop#storage metrics

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