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vmstat

summary

    This subchapter looks at vmstat, a UNIX (and Linux) command.

    vmstat is used to show virtual memory usage.

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vmstat

    This subchapter looks at vmstat, a UNIX (and Linux) command.

    vmstat is used to show virtual memory usage.

usage

    Type vmstat to see a list of virtual memory statistics. Especially useful in a virtualized enivronment.

$ vmstat

Mac OS X

    vm_stat is a Mach-specific version of the UNIX command vmstat:

$ vm_stat


Mach Virtual Memory Statistics: (page size of 4096 bytes)
Pages free:                     5538.
Pages active:                 142583.
Pages inactive:                76309.
Pages wired down:              37531.
"Translation faults":        4427933.
Pages copy-on-write:           54807.
Pages zero filled:           3086159.
Pages reactivated:              6533.
Pageins:                       46357.
Pageouts:                       4453.
Object cache: 66465 hits of 76770 lookups (86% hit rate)

other

    In June 2009, Ken Milberg named this command as one of the Top 50 universal UNIX commands at this web page Top 50 Universal INIX commands. Note that this web page requires agreeing to be spammed before you can read it.


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free music player coding example

    Coding example: I am making heavily documented and explained open source code for a method to play music for free — almost any song, no subscription fees, no download costs, no advertisements, all completely legal. This is done by building a front-end to YouTube (which checks the copyright permissions for you).

    View music player in action: www.musicinpublic.com/.

    Create your own copy from the original source code/ (presented for learning programming).


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free book on UNIX/Linux System Administration

Teach Yourself UNIX/Linux System Administration and Shell Programming

free computer programming text book project

Building a free downloadable text book on computer programming for university, college, community college, and high school classes in computer programming.

If you like the idea of this project,
then please donate some money.

send donations to:
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Made with Macintosh

    This web site handcrafted on Macintosh computers using Tom Bender’s Tex-Edit Plus and served using FreeBSD .

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    †UNIX used as a generic term unless specifically used as a trademark (such as in the phrase “UNIX certified”). UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company Ltd.

    Names and logos of various OSs are trademarks of their respective owners.

    Copyright © 2012, 2014 Milo

    Created: July 11, 2012

    Last Updated: June 7, 2014


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