Denis, This patch was a feeble attempt at fixing a real VM problem by masking what was really going on. There are many "better" solution than this old patch AA has a great VM patch Rik has an rmap patch that looks promising and my latest "simple" fix is attached for 2.4.17 but should apply to 2.4.18-pre Thanks for looking at this old one though. Martin BTW: w/ this patch you no longer need to Tame the OOM killer