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Why on Unix/Linux OS machines are showing less memory (RAM) than it is? Let say i have Ubuntu machine whose have 1024 MB ram, when i open "System Monitor" "Resources" tab it shows 1001.2 MB. How i can get all RAM from Unix/Linux machines?

link doesn't help -http://serverfault.com/questions/9442/why-does-red-hat-linux-report-less-free-memory-on-the-system-than-is-actually-av

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closed as not a real question by MDMarra, mulaz, Iain Nov 5 '12 at 13:22

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

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Minimalism can be nice, but not when asking questions. –  Janne Pikkarainen Nov 5 '12 at 13:07
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And very, very likely to go in this direction: serverfault.com/questions/9442/… –  Alastair McCormack Nov 5 '12 at 13:15
    
Please provide more information then flag to have your question reopened, providing the link above doesn't answer your question. –  Iain Nov 5 '12 at 13:23
    
@krapstuke: Doesn't the answer from James help? –  Sven Nov 5 '12 at 13:34
    
@SvenW no. i need proper solution to get this via terminal at least. –  krapstuke Nov 5 '12 at 13:39

1 Answer 1

up vote 2 down vote accepted

You have provided a very vague sentence but i'll do my best. You likely have an integrated graphics card. A portion of the ram will be taken for video memory. You should be able to control how much is taken in bios.

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i need terminal command, not BIOS. I'm testing it on virtual machines –  krapstuke Nov 5 '12 at 13:36
    
@krapstuke: Why don't you give us the whole picture in the question? This kind of information is relevant, now we would like to know which virt tool you are using. In most (all?) products you can control how much video RAM the machines have available somewhere in the virtual machine settings. This will be taken from the total memory you gave the machine. –  Sven Nov 5 '12 at 13:39
    
@SvenW tool doesn't matter. Video memory is separated from ram. Chill out. Do you know the way to get Total ram in terminal? –  krapstuke Nov 5 '12 at 13:48
    
@krapstuke Having seen your updated question please read this explanation on wikipedia (en.wikipedia.org/wiki/Mebibyte) –  James Park-Watt Nov 5 '12 at 13:54

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