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The Device I/O Latency Graph shows incorrect values

 Updated March 11th, 2016

Overview

Virtualization Manager shows extremely high values (millions of years) on the Device I/O Latency graph for datastores that are managed by vSphere 5.5U2 and later versions.

Environment

All VMAN versions

Resolution

This is an issue in vSphere, Virtualization Manager shows data received through a VMware VI API. You can access the same graph in vSphere under the name of Physical device command latency counter.

The issue should be fixed in a future version of vSphere.

For additional information, see vCenter 5.5-6.5 VMs display high latency with enourmous values in VMAN.

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