You can use the esxcli commands to change the I/O scheduling capability. The capability is enabled by default.

Prerequisites

Install vCLI or deploy the vSphere Management Assistant (vMA) virtual machine. See Getting Started with vSphere Command-Line Interfaces. For troubleshooting, run esxcli commands in the ESXi Shell.

Procedure

To enable or disable per file I/O scheduling, run the following commands:

Option

Description

esxcli system settings kernel set -s isPerFileSchedModelActive -v FALSE

Disable per file I/O scheduling

esxcli system settings kernel set -s isPerFileSchedModelActive -v TRUE

Enable per file I/O scheduling