I try to avoid swap for latency critical things. I do a lot of ci/CD where we just have weird load and it would be a waste of money/resources to just shelf out

I try to avoid swap for latency critical things. I do a lot of ci/CD where we just have weird load and it would be a waste of money/resources to just shelf out the max memory. Other example would be something like Prometheus: when it crashes and reads the wal, memory spikes. Also it's probably a unsolved issue to tell applications how much memory they actually are allowed to consume. Java has some direct buffer and heap etc. I have plenty of workloads were I prefer to get an alert warning and acting on that instead of handling broken builds etc.