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I'm running 64-bit Arch on a laptop with 4GB of memory. I was concerned when KInfocenter said I only had 6% of my memory free when I was running only a few programs. However, System Monitor says I'm only using 1.5GB. What could be causing this difference and which one is reliable?
Last edited by briff (2011-09-04 15:07:42)
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Post the output of 'free -m'.
https://wiki.archlinux.org/index.php/FA … _my_RAM.3F
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Presumably, it's because KInfocenter reports the actual amount of free memory, while System Monitor also considers the memory used for buffers and cache as free (on the account that they should be easy to free when applications need more memory).
'free -m' in a terminal will give you both numbers (the actual amount of free memory on the first line and the corrected for buffers/cache on the second line).
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[ben@myhost xorg.conf.d]$ free -m
total used free shared buffers cached
Mem: 3827 3709 118 0 67 1660
-/+ buffers/cache: 1981 1846
Swap: 6000 0 6000
Ok, that makes more sense, so Kinforcenter reports the actual usage and System Monitor reports the "-/+ buffers/cache?"
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Thanks guys
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If your interested in any more information here is a very quick overview of the kernel memory management
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