New memory/swap behavior

[pgwillia]

Describe the bug
New memory use behaviour for Jupiter.

Expected behavior
No concerning memory spikes.

Screenshots

Additional context
Something caused oom killer to unmount era_assets on Nov 16. Working theory is poison query. Also concern that recent release introduced memory leak.

[nmacgreg]

Just a note to say, this is an ongoing issue!

We're going into the holiday season with these servers reporting critically low amounts of swap-and-thus memory available practically every day... (although it's not causing any other problems):