What is indicated by each value in /proc/meminfo?

Issue

• This information comes in the form of both high-level and low-level statistics. At the top you see a quick summary of the most common values people would like to look at. We start off by showing the output of the cat /proc/meminfo:

• free

    root:   total:          used:           free:           shared: buffers:        cached:
    Mem:    1055760384      1041887232      13873152        0       100417536       711233536
    Swap:   1077501952      8540160         1068961792

• cat /proc/meminfo

    MemTotal:               1031016 kB
    MemFree:                13548 kB
    MemShared:              0 kB
    Buffers:                98064 kB
    Cached:                 692320 kB
    SwapCached:             2244 kB
    Active:                 563112 kB
    Inact_dirty:            309584 kB
    Inact_clean:            79508 kB
    Inact_target:           190440 kB
    HighTotal:              130992 kB
    HighFree:               1876 kB
    LowTotal:               900024 kB
    LowFree:                11672 kB
    SwapTotal:              1052248 kB
    SwapFree:               1043908 kB
    Committed_AS:           332340 kB

Below you find the individual values we will discuss. First we will discuss the high-level statistics.