Minecraft Server seems as if it is limiting the amount of RAM it uses

Question

When I go to run /tps in the console, or in game, I get this:
[19:20:44] [Server thread/INFO]: TPS from last 1m, 5m, 15m: 19.12, 19.82, 19.94
[19:20:44] [Server thread/INFO]: Current Memory Usage: 485/592 mb (Max: 2048 mb)

Looked all fine at first until I noticed that my server is limiting the amount of RAM it can use to around 600MiB, even though I visibly gave it 2GiB to work with. Is there a reason why this is happening? Can I fix it?

valkyrie_pilot · Accepted Answer

Servers only use as much ram as they need, so if there is noone or only one player online, using only 600MB of ram is not a problem. TPS being just below 20 is OK, its mostly a quirk of the way timings work, and the CPU will be the main issue for server TPS.

Correct answer by valkyrie_pilot on April 18, 2021

Minecraft Server seems as if it is limiting the amount of RAM it uses

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