JPCSP is eating away all my RAM

[hyakki]

that's normal, Java allocates ram for the virtual machine (JVM) so if the -xmx size is 1024 that's going to eat 1 gig of ram, give or take a few hundred megs. (the higher the -xmx size the more ram it will take), if you want it to use less ram then you can try lowering the xmx value to 512 but you might get out of memory issues in jpcsp., you can change this value in the .bat file or in the launcher if you use it.