String () { return "PagesForReclaimCollector[" + pagesForReclaimDirty.size() + " dirty/" + pagesForReclaimNonDirty.size() + " non-dirty, " + "low usefulness <= " + lowUsefulnessThresholdEstimator.currentEstimation() + " (" + lowUsefulnessThresholdEstimator.percentileToEstimate() + "%)" + "]"; }