Also, with Postgres memory tuning: you may have to change kernel parameters to permit more shared memory. Make sure you make these changes persistent between re

Also, with Postgres memory tuning: you may have to change kernel parameters to permit more shared memory. Make sure you make these changes persistent between reboots! For example, in FreeBSD, you can set the parameters at runtime via sysctl, but unless you also modify /etc/sysctl.conf, they won't be applied after a reboot. It's not fun scrambling to figure out what your kernel parameters were after you've applied a security update and rebooted your machine. Not fun at all. Test out reboots.