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  1. #1

    Linux show memory vs cpu vs io [history]


    please which command or linux script to use to check history cpu versus memory versus io usage or vs number of httpd processes?

    I know there is "sar" which does this, but im unsure how to merge the output so it shows cpu, memory, io etc at one line? thx

  2. #2
    Linux Guru Rubberman's Avatar
    Join Date
    Apr 2009
    I can be found either 40 miles west of Chicago, in Chicago, or in a galaxy far, far away.
    See the sar command (sysstat). The default collection period (crontab) is 10 minutes. I find that I need to change that to 1 minute and alter the command to collect all stats so I can do detailed analysis of the behavior of a system over time.

    As for one line? That's up to you to parse, extract, and present the data in a format that makes sense to you. I use a hadoop-based time-series database and web-based GUI for that.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

  3. #3
    please which command is that to show cpu, ram vs i/o next to each other?

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