Minecraft forge automatically sets _JAVA_OPTIONS environment variable

Question

I just started making minecraft mods and everything went fine until I ran the program (minecraft forge 1.12.2). It said:

Initial heap size set to a larger value than the maximum heap size can  
after that: picked up _JAVA_OPTIONS: -Xmx512M  
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release.

When I checked my environment vraiables, I found _JAVA_OPTIONS and deleted it, but the problem remains, What should I do?

I am on a Windows 10 computer and have 8 GB ram.

Take a look here https://stackoverflow.com/questions/9350437/incompatible-initial-and-maximum-heap-sizes-specified. Most likely setting minimum heap size (`-Xms512M`, for example) will help. — Dmitriy Popov, Jun 28 '19 at 09:29
Nice to hear, could you then post the exact instruction of what you've done as an answer and accept it? — Dmitriy Popov, Jun 28 '19 at 15:51

score 0 · Answer 1 · answered Jun 30 '19 at 18:29

Initial heap size set to a larger value than the maximum heap size can

Means that the maximum heap size is smaller than the initial heap size.
To solve this problem simply add _JAVA_OPTIONS and set it to
-Xmx512M -Xms512M.
-Xms512M Just sets the initial heap size to 512mb.

Minecraft forge automatically sets _JAVA_OPTIONS environment variable

1 Answers1