> The spikes were happening because, after the reboot, the HUGE PAGES were > enabled. > > After disabling them, all got back to normal.
Since you said earlier you were on PostgreSQL version 9.2, you must be talking about transparent huge pages. Yeah, be sure those are configured to be disabled in a way that "sticks" on your OS. When you get to version 9.4 you will notice that we support huge pages directly. That would be expected to work without problems even though TRANSPARENT huge pages are debilitating.
Yep.. you're right, Kevin.
Transparent huge pages...
We do have a script that disables it when the system is rebooted, but that did not work.
