Simon Riggs <[EMAIL PROTECTED]> writes: > The LRU moves each time we do FileRead or FileWrite, not just on > open/close operations.
Sure, but those still require kernel calls, so the cost of a couple of pointer swings is negligible. There's no way that the logical complexity of sometimes maintaining LRU and sometimes not is going to be repaid with a useful (or even measurable) speedup. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend