Peter Eisentraut <peter_e@xxxxxxx> writes: > I'm seeing a background writer process in an 8.0.8 installation that uses 1.6 > GB of main memory, and ps shows that it has used an unreasonable amount of > CPU time so far. It seems that the machine was under heavy load just before > I got to it; maybe that is cause? Has anyone seen this sort of memory bloat > on the background writer process? Are you sure it's bloat, and not just a reflection of the fact that it's touched every page of the shared buffers over its lifespan? Some OSes (you did not say what this is) report a process' memory size as including only those pages of shared memory it's touched. regards, tom lane