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    Reference - MPSTAT
    Brett Lee
    =======================================
    
    
    
    Overview:
    ---------------
    
    The mpstat command is used for monitoring CPU utilization to determine
    where the CPU spends its cycles.
    
    The mpstat command produces one report, the CPU Utilization Report.
    
    The information comes from, where else, /proc/.
    
    
    
    
    Usage:
    ----------
    
    ~> mpstat help
    Usage: mpstat [ options... ] [ <interval> [ <count> ] ]
    Options are:
    [ -P { <cpu> | ALL } ] [ -V ]
    
    
    
    Details:
    ----------
    
    -P     ** Show usage by processor/core.
              Note that the first CPU is CPU0.
    
    
    
    Examples:
    -----------
    
    ~> mpstat           - show a summary of all CPUs
    ~> mpstat -P 0      - show details for the first CPU
    ~> mpstat -P 1      - show details for the second CPU
    ~> mpstat -P 1 -P 2 - show details for the first and second CPUs
    ~> mpstat -P ALL    - show details for each CPU as well as their average/total
    
    
    
    Fields:
    ----------
    
    CPU       ** Processor number.
    
    %user     ** % of CPU time executing at the user (application) level.
    
    %nice     ** % of CPU time executing at the user level with nice priority.
    
    %sys      ** % of CPU time executing at the system (kernel) level.
    
    %iowait   ** % of CPU time idle waiting on I/O.
    
    %irq      ** % of CPU time servicing interrupts.
    
    %soft     ** % of CPU time servicing software interrupts.
    
    %steal    ** % of CPU time waiting for the another virtual processor.
    
    %idle     ** % of time idle and not in iowait.
    
    intr/s    ** # of interrupts received per second.
    
    
    
    

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  • This site contains many of my notes from research into different aspects of the Linux kernel as well as some of the software provided by GNU and others. Thouugh these notes are not fully comprehensive or even completetly accurate, they are part of my on-going attempt to better understand this complex field. And, they are your to use.

    Should you wish to report any errors or suggestions, please let me know.

    Should you wish to make a donation for anything you may have learned here, please direct that donation to the ASPCA, with my sincere thanks.

    Brett Lee
    Everything Penguin

    The code for this site, which is just a few CGI scripts, may be found on GitHub (https://github.com/userbrett/cgindex).

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    "We left all that stuff out. If there's an error, we have this routine called 'panic', and when its called, the machine crashes, and you holler down the hall, 'Hey, reboot it.'"

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