Memory

top10 processes using moemory

ps auxh | sort -r --key=4 | head -5

Overcommit

• I hade to tune this setting on a high traffic Postgresql server:

vm.overcommit_memory = 2

• 0 (default): as before: guess about how much overcommitment is reasonable,
• 1: never refuse any malloc(),
• 2: be precise about the overcommit