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Oracle Linux: iostat Displays Incorrect Metrics for the Devices with IO Latencies Less Than a milli-second (Doc ID 3033786.1)

Last updated on JULY 16, 2024

Applies to:

Linux OS - Version Oracle Linux 8.0 with Unbreakable Enterprise Kernel [5.4.17] and later
Linux x86-64
Linux x86

Symptoms

The iostat user-space utility shows %util as 100% for the disk with low latency like SSD/NVME which has latencies less than a milli-second and has a range of micro-seconds and below.

Cause

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In this Document
Symptoms
Cause
Solution
References


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