Tom Lane wrote: > "Craig A. James" <cjames@xxxxxxxxxxxxxxxx> writes: >> Here's something I found googling for "memory overcommitment"+linux >> http://archives.neohapsis.com/archives/postfix/2000-04/0512.html > > That might have been right when it was written (note the reference to a > 2.2 Linux kernel), but it's 100% wrong now. 0 is the default, not-safe > setting. Is this something we could detect and show a warning for at initdb time; or perhaps log a warning in the log files at postmaster startup? This dangerous choice of settings seems to catch quite a few postgresql users.