this post was submitted on 19 Aug 2024
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Java uses double ram. (sh.itjust.works)
submitted 3 weeks ago* (last edited 3 weeks ago) by UnRelatedBurner@sh.itjust.works to c/linux@lemmy.ml
 

Let's be honest: I only use Java for Minecraft. So I only debugged with it. But all version, server or client, all launchers. All of them use double (or more) RAM. In the game the correctly allocated amount is used, but on my system double or more is allocated. Thus my other apps don't get enough memory, causing crashes, while the game is suffering as well.

I'm not wise enough to know what logs or versions or whatever I should post here as a cry for help, but I'll update this with anything that'll help, just tell me. I have no idea how to approach the problem. One idea I have is to run a non-Minecraft java application, but who has( or knows about) one of those?

@jrgd@lemm.ee's request:

launch arguments [-Xms512m, -Xmx1096m, -Duser.language=en] (it's this little, so that the difference shows clearly. I have a modpack that I give 8gb to and uses way more as well. iirc around 12)

game version 1.18.2

total system memory 32gb

memory used by the game I'm using KDE's default system monitor, but here's Btop as well:

this test was on max render distance, with 1gb of ram, it crashed ofc, but it crashed at almost 4gbs, what the hell! That's 4 times as much

I'm on arch (btw) (sry)

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[–] taaz@biglemmowski.win 10 points 3 weeks ago* (last edited 3 weeks ago) (7 children)

As a side note and a little psa, if you need to squeeze out more overall performance of out of MC (and you are playing vanilla or Fabric modpack) I very much recommend using these Fabric mods: Sodium, Lithium, FerriteCore and optionally Krypton (server-only), LazyDFU, Entity Culling, ImmediatelyFast.

[–] boredsquirrel@slrpnk.net 1 points 3 weeks ago (3 children)

I only know Optifine. What is fabric?

[–] taaz@biglemmowski.win 4 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Fabric is one of many mod loaders ala Forge. It's newer and less bulky then Forge (but afaik it already did have it's own drama so now we also have a fork called Quilt, the same goes for Forge and NeoForge).

The mods I've specified above can be considered as a suite replacement for the (old) OptiFine.

E: For example this all the mod loaders modrinth (mod hosting website, curseforge alternative) currently lists:

[–] LazaroFilm@lemmy.world 2 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Look for the modpack Additive It’s based on Fabric with some great mods oriented towards speed and QOL which replace OptiFine in one package.

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