I/O bottlenecks can be a big problem. As a system administrator, you want to identify underlying hardware issues when systems experience storage latency.
This search requires the Splunk Add-on for Microsoft Windows or the Splunk Add-On for Unix and Linux, set up by a system administrator. In addition, the iostat script must be enabled in your Splunk deployment and the sysstat performance monitoring tools for Linux must be installed.
How to use Splunk software for this use case
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In addition, these Splunk resources might help you understand and implement this search: