Lynis Security Controls
PROC-3614 - Processes waiting for IO
This control checks if there are processes waiting for IO requests to finish. The availability and performance of a system might be in danger when it occurs too often. High IO might be caused due to high disk activity or in some cases network issues (high bandwidth usage, unstable connectivity).
How to solve
Check with the ps binary what processes are having IO requests waiting. Optionally use sysstat or a similar tool set to monitor for recurrences.
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Linux and Unix System Hardening
This information is provided as part of the Lynis community project. It is related to Lynis control PROC-3614. All information should be considered as-is, without guarantees. Any advice or snippets should be tested before implementing in production environments.
Lynis is a technical security audit tool for Unix flavors like Linux, macOS, AIX, Solaris, and *BSD. It is open source software and free to use. The project has an active community, including open development via GitHub.
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