Getting the total virtual memory for ubuntu in c++ Post: 302313388

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Top Forums Programming Getting the total virtual memory for ubuntu in c++ Post 302313388 by jim mcnamara on Tuesday 5th of May 2009 01:16:55 PM

05-05-2009

Registered User

pludi gave a fully correct answer. There are other ways involving accessing kernel memory directly, but that is very advanced programming.

You can also call popen() with a command of "vmstat -s".

This is the output of vmstat -s, you want the stuff in red

Code:

$ vmstat -s
      2096612  total memory
       788440  used memory 
            0  active memory
            0  inactive memory
      1308172  free memory
            0  buffer memory
            0  swap cache
      1572864  total swap
        13312  used swap
      1559552  free swap
     17632780 non-nice user cpu ticks
            0 nice user cpu ticks
     18800467 system cpu ticks
   1772277920 idle cpu ticks
            0 IO-wait cpu ticks
            0 IRQ cpu ticks
            0 softirq cpu ticks
     11051537 pages paged in
     22309640 pages paged out
     11051537 pages swapped in
       345219 pages swapped out
    481163032 interrupts
   1720440275 CPU context switches
   1240017420 boot time
            0 forks

It is easier to read the /proc/meminfo "file"

jim mcnamara

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LEARN ABOUT DEBIAN

seeded-in-ubuntu

seeded-in-ubuntu(1)					      General Commands Manual					       seeded-in-ubuntu(1)

NAME

       seeded-in-ubuntu - Determine whether a package is safe to upload during a freeze

SYNOPSIS

       seeded-in-ubuntu [options] package...

DESCRIPTION

       Lists all the current daily images containing the specified packages.  Or whether the package is part of the supported seed.

       If it isn't on an image, it should be safe to upload.  During the final freeze, one should avoid packages in the supported seed too.

       An index of the current manifests is downloaded from UbuntuWire.

OPTIONS

       -b, --binary
	      The  packages  specified	are  binary packages.  This is faster than source packages, as otherwise we must query LP to determine the
	      binary packages that every specified source package builds.

       -u URL, --data-url=URL
	      URL for index of seeded packages.  Default: UbuntuWire's service at http://qa.ubuntuwire.org/ubuntu-seeded-packages/seeded.json.gz.

       -h, --help
	      Display a help message and exit

EXAMPLES

       All the images that contain unity:

	      seeded-in-ubuntu -b unity

AUTHORS

       seeded-in-ubuntu and this manpage were written by Stefano Rivera <stefanor@ubuntu.com>.

       Both are released under the terms of the ISC License.

ubuntu-dev-tools						   December 2011					       seeded-in-ubuntu(1)

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