In case you missed it at the time... here's a graph of the http://Matrix.org synapse main process memory footprint after we shipped 1.38 mid-July. Yes, that's the http://Matrix.org homeserver itself trundling away at a fairly stable 2GB of RAM on the main process.
@matrix Great job! It's amazing you manage to do so much with 2GB when a Chrome tab often gets many more times that :)
@matrix about those drops before 1.38... is this a GC or OOM-killer?
@wolf480pl @matrix
If I had a guess, I'd say they're crashes of some sort, e.g. "server too slow - shell script restarts it"
@matrix What about the RAM usage of the database?
@matrix Nice work!