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Disable memory overcommit and set swappiness to 0 on database servers. Just to be clear, are you suggesting (on linux) setting overcommit_memory = 2 but leaving overcommit_ratio alone, which defaults to 50%? I’ve tried setting them to 2 and 0% respectively in the past and it didn’t end well… Also I’ve read, and now use, swappiness = 1 which is supposed to disable swapping entirely except when not swapping would cause OOM. Any thoughts on that? Cheers, Steve. |
