// from machines that run #1020927 with postToServer=true
// onStatus: (computer id, status text)
svoid dm_onRemoteSystemStatusPosted(IVF2<S, S> onStatus) {
  if (onStatus == null) ret;
  dm_machineGroupChat();
  dm_vmBus_onMessage_q gotFromMachineChat(voidfunc(S msg) {
    S author = getAuthorOfSignedText(msg); // verified author
    if (empty(author)) ret;
    msg = trim(unsign(msg));
    if (swic(msg, "system cpu:"))
      onStatus.get(author, msg);
  });
}