> I hear that you can go fairly crazy with swap sizes and have a system that works well under memory pressure, but I have not tried it myself. We are running a

> I hear that you can go fairly crazy with swap sizes and have a system that works well under memory pressure, but I have not tried it myself. We are running a distributed in-memory olap database. All nodes have 500gb ram used basically at capacity. One node has 1.5T of nvme swap (initially just for testing but it works well) so it hosts a shard and the manager/reduce node. We've tested forcing the nodes onto swap and saw a x10 performance decrease, but our implementation is pretty shit when it comes to memory access patterns so it's not too bad. The collocated node is slightly slower in terms of performance but doesn't impact total response by a meaningful margin.