LRU writes

Hi, I am trying to understand the logic of LRU writes : online 5.02.UD3 When I do a tbstat -F : i see Fg Writes LRU Writes Idle Writes Chunk Writes 0 108566 1565 244701 The manual says : LRU writes : Foreground writes alert the master daemon that page cleaning is needed. Once alerted ... How come that my Fg Writes is at 0 ? Guy.