Sunbelt Computer Software

In this section you will learn how to get overall memory information (usage by OS) and memory module layout:

For function reference and examples we assume, that we imported systeminformation as follows:

const si = require('systeminformation');

System Memory and Memory Layout

All functions in this section return a promise or can be called with a callback function (parameter cb in the function reference)

const si = require('systeminformation');
si.mem().then(data => console.log(data));

{
  total: 67092135936,
  free: 65769291776,
  used: 1322844160,
  active: 1032495104,
  available: 66059640832,
  buffers: 63213568,
  cached: 800124928,
  slab: 268804096,
  buffcache: 1132142592,
  swaptotal: 8589930496,
  swapused: 0,
  swapfree: 8589930496,
  writeback: 0,
  dirty: 8192
}

const si = require('systeminformation');
si.memLayout().then(data => console.log(data));

[
  {
    size: 34359738368,
    bank: 'BANK 0',
    type: 'DDR4',
    ecc: false,
    clockSpeed: 2667,
    formFactor: 'SODIMM',
    manufacturer: '029E',
    partNum: 'CMSX64.....',
    serialNum: '00000000',
    voltageConfigured: 1.2,
    voltageMin: 1.2,
    voltageMax: 1.2
  },
  {
    size: 34359738368,
    bank: 'BANK 2',
    type: 'DDR4',
    ecc: false,
    clockSpeed: 2667,
    formFactor: 'SODIMM',
    manufacturer: '029E',
    partNum: 'CMSX64.....',
    serialNum: '00000000',
    voltageConfigured: 1.2,
    voltageMin: 1.2,
    voltageMax: 1.2
  }
]