Il 06/04/2013 00:06, Peter Lieven ha scritto: >> > I think we should MADV_DONTNEED it. > i have to correct myself, on Linux it seems that MADV_DONTNEED guarantees that > subsequent reads will return a zero filled page. > > If I am right with that we could MADV_DONTNEED the memory on startup and keep > not sending zero pages in bulk stage if we are running under Linux. Am I > right with that?
Actually we can use mmap+munmap to allocate a well-aligned, always zero block for the RAM. Paolo
