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  1. #1

    Identify the source of High CPU

    Hey Guys,

    I am running a BSD box with monitoring configured via SNMP. I am getting randon high CPU spikes and am trying to identify the cause.

    Currently I have a cron running every 5 minutes to get an output from 'ps' and getting the top processes aswell as a 'vmstat 1 10' but it looks like the high CPU may occur outside the cron times.

    Instead of changing the cron to run every 1 minute or so, is there a better way to identify what is causing the high cpu?

    ie: when High CPU is triggered, to get an output of the current processes running?

    Thanks in advance,


  2. #2
    Are you getting high CPU utilization or percentage spikes? They are two different things. I recommend watching the system for a while manually using top.


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