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CPU metrics total usage and idle count I/O wait as usage, despite being idle

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  • Emerson Prado
    Junior Member
    • Aug 2025
    • 1

    #1

    CPU metrics total usage and idle count I/O wait as usage, despite being idle

    Hi all,
    I noticed I/O wait is added to total CPU usage and subtracted from CPU idle, in standard Zabbix metrics. iostat and sar manuals state I/O wait is, in fact, idle CPU. This seems to be the default behaviour across multiple Zabbix versions up to 7.
    Is there a reason for that, or should it be fixed?
    Thanks!
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