NodeJS snippet for periodically showing memory use over time

show_memory.js

function show_memory(interval=1000) {
  setTimeout(show_memory, interval).unref()
  let out = []

  const mem = process.memoryUsage()
  out.push('MEM')
  for (const [k,v] of Object.entries(mem)) {
    out.push(`${k}: ${(v / 1.0e6).toFixed(1)} MB`)
  }

  const cpu = process.cpuUsage()
  out.push('   CPU')
  for (const [k,v] of Object.entries(cpu)) {
    out.push(`${k}: ${(v / 1.0e6).toFixed(2)}s`)
  }
  out.push(`up ${process.uptime()}s`)

  console.log('### %s', out.join(' '))
}