nostrdb effectively uses 0 memory since it is non-copy when querying. Nothing is copied into main memory, its just the page cache which the OS manages and is evictable, unlike explicitly allocated memory by processes.

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The problem is that the OS reports this as resident set usage of the process, mixed in with other non-reclaimable memory usage, so it’s very misleading.

If your system started swapping you would see nostrdb memory usage go to 0

ack thanks for the explainer