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    Linux - Get a Baseline on Performance
    Brett Lee
    ==========================================
    
    Need to complete this work...
    
    In the meantime, see the docs in this directory that start with:
    
      Reference_
    
    and use these tools to collect data on your system while running a
    benchmarking suite of applications.  Find out where the power curve
    peaks, and the metrics (context switches, etc.) that are noticed after
    the peak.
    
    In short, you'll then want to monitor your system for the same metrics
    that were observed when the system began to degrade.
    
    
    
    IO:
    
    As a start, you can:
    
    1.  Measure IO performance with 'dd'
    
        ...but that is pretty limited
    
    2.  Upgrade from 'dd' to 'sgp_dd' from the sg3_utils rpm.
    
        # sgp_dd if=/dev/zero of=/scratch/50G-14thr bs=1M count=50000 thr=14 time=1
    
    3.  Control better with 'fio'
    
    
    

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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).

    For both data encryption and password protection, try Personal Data Security (https://www.trustpds.com).


    "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.'"

        - Dennis Ritchie on Unix (vs Multics)


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