![]() I have also seen "-XX:+UseCompressedOops" being used but it is only available for and already enabled automatically on 64-bit programs.I have seen the "-Xmn" argument being used in other Minecraft FPS boosting JVM arguments but I do not use it because by default, "-Xmn" is selected internally according to your system's capabilities. ![]() Please keep in mind that some arguments may cause your client to crash depending on your PC specifications (and maybe your Minecraft version?) and you may have to experiment around with changing some values or even deleting some of them in order for it to work.If it crashes, first try disabling Connected Textures in Minecraft's video settings before deleting any arguments.You can find yours in the Performance tab of Task Manager. "-XX:ParallelGCThreads=12" - Sets the maximum logical processors (threads) the Java application (Minecraft) can use my CPU has 12 threads, so I set it to 12.This should be half of the RAM allocated to Minecraft in my case, I have allocated 6 GB (6144 MB) of RAM, so I will use 3072m (3 GB). "-XX:ReservedCodeCacheSize=3072m" - Sets the cache size for reserved code that the Java application (Minecraft) might reuse."-Xms 6G" - Sets the initial allocated RAM of the Java application (Minecraft) at launch this value should be the same as the maximum allocated RAM to reduce amount of garbage collection the program has to do."-Xmx 6G" - Sets the maximum allocated RAM of the Java application (Minecraft) at launch you should always leave at least 1 GB left over (2 GB is highly recommended if it is available, which is what I did for my 8 GB RAM PC) for your system."-d64" - Makes the Java application (Minecraft) run as a 64-bit program, which allows it to use what your 64-bit OS has to offer to its fullest potential only use this if your operating system is 64-bit / 圆4 (not 32-bit / x86) - otherwise, remove this parameter as Java sets this for 32-bit by default. ![]() It's not a problem that's going to go away if it stays on 32, and we'd rather have it 64 in the long term due to slightly better performance anyways.-XX:+UnlockExperimentalVMOptions -d64 -Xmx 6G -Xms 6G -XX:+DisableExplicitGC -XX:+UseParNewGC -XX:ParallelGCThreads=12 -XX:+CMSParallelRemarkEnabled -XX:+UseConcMarkSweepGC -XX:+UseAdaptiveGCBoundary -XX:-UseGCOverheadLimit -XX:+AggressiveOpts -XX:+UseNUMA -XX:+UseBiasedLocking -Dfml.ignorePatchDiscrepancies=true -Dfml.ignoreInvalidMinecraftCertificates=true -XX:+UseFastAccessorMethods -XX:MaxGCPauseMillis=25 -XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=15 -XX:SoftRefLRUPolicyMSPerMB=10000 -XX:ReservedCodeCacheSize=3072m -XX:+OptimizeStringConcat -XX:+UseCodeCacheFlushing -XX:+UseStringDeduplication Read these first to adjust the arguments to your PC : The specifics aren't particularly necessary- what's important is that it does need to run in 64-bit. I need it to run in 64-bit because in 32-bit it's causing some out of memory errors. Thanks in advance for any help you can give. Also, this is my first time posting on SO so if I've made any errors in my post please point them out to me. MacOS: Java MacOS 圆4 (macOS 10.7.3 and HIGHER) Linux: Java Linux 圆4 RPM Java Linux x32 RPM Java Linux 圆4 Java Linux x32. I've also tried searching Stack Overflow with no luck.Īny help would be much appreciated. Windows: Java Windows 圆4 Java Windows x32. I've done as much searching as I can, but all I can find is an old Mac help file from 2005 or so (which is actually about the reverse, forcing a program to use 32-bit) and some stuff for Minecraft that recommended the old method. I'm looking for the exact lines I'd need to add to said files (assuming, of course, I'm interpreting the info right). I'm helping out a game developer who doesn't do much Mac stuff, and previously this hasn't really been important but now it is. That doesn't really exist anymore as far as I can tell.īy the way it looks it's either handled in JavaApplicationStub or the ist in the application bundle. It used to be that (when Java wasn't handled by Apple for our systems) there was a list in the control panel that let you choose which version of Java was preferred.
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