LOG2 (level, "CHN recv %d\n", ch->root_rel->n_recv);
LOG2 (level, "CHN MID r: %d, s: %d\n",
ch->root_rel->mid_recv, ch->root_rel->mid_send);
LOG2 (level, "CHN recv %d\n", ch->root_rel->n_recv);
LOG2 (level, "CHN MID r: %d, s: %d\n",
ch->root_rel->mid_recv, ch->root_rel->mid_send);