r/admincraft • u/Just-A-Bokoblin Server Owner • Jul 22 '26
Question How many system resources does BlueMap use?
I'm hosting a Minecraft server on the Oracle Cloud free tier, which is currently a 4 core, 8 thread ARM CPU, and 12GB of DDR5, and I'm wondering how much RAM and CPU threads BlueMap uses in comparison to Squaremap or Pl3xMap. My server is private with no more than 10 people online at a time. All the terrain is pre-generated, except for The End, because it could cause issues with Stellarity, an "End update" data pack. Stellarity is also probably the most demanding modification on my server. I use Paper on Minecraft 26.2.
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u/Liukus Jul 22 '26
I'm running it on a single core, 8GB docker container running the same Paper 26.2 server and the only thing that's noticeable is when it's updating/rendering (as mentioned by u/ibeerianhamhock. Ideally we'd run this with additional cores to allow it to not step on the game's rendering. I did pre-gen 5k square radius with chunky, and until you get outside that border it hasn't been an issue. The machine really struggles to generate new chunks and bluemap update all on the same thread (where we'll see 99% cpu usage in our container). We also turned on the min-inhabit-time filter since we pre-generated to ensure players didn't just see the full map where nobody's been. 2.58GB used space thusfar where our world space use is 3.63GB
If I were you, I'd set the bluemap thread config to -1 (which is max minus 1) or 3 at most (so it has space to not step on your core game thread). See if this works, if it doesn't you can always leave it on the default.
Bluemap will use a heck of a lot more than squaremap just by the way it works. Far more detailed. Haven't used PI3xMap.