UIM cdm how disk IO percentage utilization calculated

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)

Issue/Introduction

This doc explains how cdm probe calculate disk IO percentage utilization.

Environment

UIM cdm probe for Linux

Resolution

How cdm probe calculate disk IO percentage utilization.

# iostat -x -d 10 2

It would return 2 blocks of statistics with 10 seconds interval.
probe is not using the first block, it uses the 2nd block only.
For QOS_IOSTAT_PU, probe uses 13th column in the 2nd block.

Additional Information

See sysstat package requirement for cdm probe.

https://techdocs.broadcom.com/content/broadcom/techdocs/us/en/ca-enterprise-software/it-operations-management/ca-unified-infrastructure-management-probes/GA/alphabetical-probe-articles/cdm-cpu-disk-memory-performance-monitoring/cdm-cpu-disk-memory-performance-monitoring-release-notes.html