static long linux_rawRSSTotalFromSMAPS() {
  ret linux_rawRSSTotalFromSMAPS(processID_int());
}

static long linux_rawRSSTotalFromSMAPS(int pid) {
  S text = loadTextFile("/proc/" + pid + "/smaps");
  MultiMap<S> mm = colonPropertiesToCIMultiMap(text);
  long rss = 0;
  for (S s : mm.get("rss"))
    rss += parseFirstLong(s);
  ret rss*1024;
}