Allocating an appropriate amount. 6 modpack several times and tried tons of different JVM arguments to find a solution. It's a very simple thing to do: edit a profile, click "more options" at the bottom, and change that little "2GB" in the script window to something better. A JVM argument is like. -Xmn128M Sets the minimum memory consumption to 128 megabytes. 3 comments. Go to the JVM Arguments section, and increase the values for -Xmx and -Xms. In the setting window, choose System. What this does is free up unused memory periodically while java is running, aka cleans up the garbage. Daverick02 • 6 mo. Look for the “JVM Arguments” box. Yes you can change it. It’s about the size of a credit card and uses an extremely low amount of power making it ideal for all sorts of projects and ideas!. The “JVM Arguments” field will have code in it such as “-Xmx2G. Support [Archived] Tech Support. Then, choose the More Options tab. Feed The Beast. Note that the Max ram you allocate will be unusable by the rest of your system so there is really no point in setting the Min amount lower. 2 HD which is the latest release. . How much RAM do I require for a modded Minecraft game? The minimum system requirements for “vanilla” Minecraft (completely unmodded) are 4GB of RAM, but mod users regularly allocate 6GB or more to keep the game running smoothly. 4. Oracle docs. Checking in on task manager says im only using around 4 gb of ram out of my 12 gb allocated. Probably for programming convenience and out of stability reasons. Start the Minecraft Launcher by double-clicking the Minecraft icon on your PC. Adjust RAM for Minecraft. Unable to save changes to JVM Arguments while trying to allocate more RAM. ; There are multiple options to choose from, but what. These are probably the only JVM arguments you will ever need to change. Open the Minecraft Launcher. This will tell the game to allocate 2GB of RAM to each client. This option was available prior to JDK 8 but is no. ago. Min/Max Allocated Ram to your Minecraft client. -Xmx8G. true. Abra la aplicación FTB y haga clic en Library en la esquina superior izquierda. 3 minecraft servers per machine running. The limit is with the 32-bit JVM's which cannot go over 2-4 Gb depending on operating system. As you can see here, the memory usage between JVM's is a pretty impactful 1GB. rmi. Check Details Minecraft jvm arguments ram command refuses 1g prompt even via than use check parameter memory enter then there. jar the server starts without the jvm arguments and ignores the -xmx value. Minecraft mehr RAM zuweisen Minecraft more RAM Tutorial: Spiel ruckelt? Dann solltest du Minecraft mehr RAM z. How can I decide what is a good size to allocate for properties such as -xms, -xms, -maxPermSize etc. I suggest using. What this does is changes the amount of RAM Minecraft starts with. 16 64bit Java) is recommended because of things like your operating system and background processes. 6 GB. JVM Arguments for Modded Minecraft (Updated 12/30/13) Thread starter Eyamaz; Start date Aug 13, 2013; Forums. Step 5: Examine the JVM argument line. Never ever use ALL the RAM or your computer will crash. I can't see where I need to add more ram to the argument. buttttt. How is the performance affected when I allot a lot more minimum heapSize than it runs. Sources: . By default, Minecraft only uses a maximum of 1 GB of your RAM, if you have a computer that has 4 GB or even 8 GB then it will be beneficial to allocate more to it. Make sure the paper. Here’s a step-by-step guide to changing your JVM arguments: Locate the Minecraft Launcher and open it. Step 3: Click the button with the three dots for the installation you want to manage. If you have less than 4GB of RAM, DO NOT use this. In the Edit Installation Menu, click More Options to edit the JVM arguments. If you are going to use JVM arguments to define the memory allocation, be sure that you are not providing duplicate commands. Key. Here is another video tutorial on how to do so: Tip 4: Update your Java. Jun 13, 2016 at 6:49. bat file it says to add any JVM arguments to the user_jvm_args. 0. x, you'll immediately have this JVM arguments defaulted when launching. #3 JVM Arguments & Lag Spikes Minecraft can start getting slow, and getting constant lag spikes after being played for a long period of time. When you allocate more memory from your 4GB, then it just means you entire computer slows down as Minecraft becomes a bit faster. Initially tried playing around with jvm arguments to no avail. 2. OpenJ9 Run 2: Time for Forge load: 3:57 39% Menu CPU idle 4. In the “JVM Arguments” box, you will see a line of text that starts with “-Xmx”. Select Edit from the drop-down menu. Turn off fancy leaves in Optifine. Firstly - the game itself takes almost an hour to fully load, even with all other applications closed and 6gb of RAM allocated. and I allocated 6 gb of. 3,307 15 19. 19? If so, this is the video for you! We go over every single step of how to add more RAM to Minecraft 1. Web the line below shows the 3 most know jvm arguments. If you use the twitch launcher then click your profile picture, settings, minecraft. Previous Next. Task manager shows minecraft using 10gb. Web beyond increasing ram allocation, which major launchers natively support,. ; In the JVM arguments, select the text highlighted in yellow in the image above. pause. -Xmx doesn't allocate ram, rather it gives the JVM permission to ask the OS to allocate RAM as needed. The main functions of JVM arguments are 2 things, to allocate RAM to the JRE (in this case,. Dec 22, 2015. JVM options that affect memory use. Click on the three dots next to your version & select „Edit”. Step 04: Scroll down to "JVM Arguments". RAM wouldn't help at all here, as your GPU itself can only handle so large of a texture size (for example, mine supports up to 16384x16384 - this is the total size of ALL block and item textures combined as the game stitches them into a single texture atlas at runtime (draw calls can only operate on one texture at a time). There will be a lot of code in this box, but you only need to care about the first snippet, which looks like this: The figure at the end represents the amount of RAM used by Minecraft. Using 5800x 3090 with 8gb ram allocated 70mods and running shaders I'm. 8 GB is enough for most users, but if you want to operate other applications,. It's a little disconcerting. Also Xmn is minimum memory but you don't need to change that. The JVM arguments : -XX:+UnlockExperimentalVMOptions -d64 -Xmx 6G -Xms 6G -XX:+DisableExplicitGC -XX:+UseParNewGC -XX:ParallelGCThreads=12 . Step 3: Click on the. Minecraft more options. Change the number in this. This option was available prior to JDK 8 but is no. dgc. For example, starting a JVM like below will start it. 1. After that, the full argument should be “-Xmx8G”. # They can take any number, followed by an M or a G. Previous Next. On the next screen, press More Options under Resolution. # M means Megabyte, G means Gigabyte. Step 3 - Choose the profile you want to allocate more RAM to (e. In Minecraft, you can check whether your changes were applied correctly. To do this: Click on the installations tab. 5GB: -Xms2500M. 18 which reset the JVM arguments in the process Replyr/feedthebeast •. . 17. Mine is set to -Xms2G, so on startup it will have 2gigs of RAM. 5 and before and Forge 1. Use JVM Args: Argument Meaning -d64 forces 64 bit mode -XX:+DisableExplicitGC Disables Addition garbage Collection -XX:+UseConcMarkSweepGC Enables an algorythem that does the garbage Collection in the background. Scroll down to JVM Arguments, then locate the -Xmx2G parameter. I was using 7-8gb. For instance, if you have 1 GB of memory, setting -XX:MaxRAMPercentage=50 (or -XX:MaxRAMFraction=2) will make the JVM allocate approx. At the bottom of the settings page there is a box for "Additional Arguments". This will also allocate 2 GB of RAM to Minecraft. This is especially useful. Optifine and Foamfix are good for performance. The "2G" in this text represents the 2 Gigabytes of RAM. jvm argument: -XX:+UseG1GC -XX:+DisableExplicitGC -XX:MaxGCPauseMillis=10 -XX:SoftRefLRUPolicyMSPerMB=10000 . If you need it to use less than it is, change the arguments in the launcher. The case where this isn't true is where you know something that the JVM can't, such as the trade-off between latency and throughput. 1 GB of RAM allocated. DefaultSysImplementation. To do this, press F3 in the game, which opens the debug screen. "2G" represents how much RAM is allocated to the client. Oct 14, 2013 #200The subreddit for all things related to Modded Minecraft for Minecraft Java Edition --- This subreddit was originally created for discussion around the FTB launcher and its modpacks but has since grown to encompass all aspects of modding the Java edition of Minecraft. This is the text that allocates RAM to your Minecraft client. Enigmatica 2 Expert RAM usage. The next steps are divided between Forge 1. , 2 gigs - Xmx2G. I trying 1, 2, 3 and 4GB. . This is one I'm sure most of you have heard about. I have downloaded a fresh ATM3 v5. How can you allocate more RAM to Minecraft 1. (the fact that Mojang actually had this as a default JVM argument and the issues mentioned in the link shows how little they know about Java performance; I removed it myself and saw better results) The best GC for modern versions is G1GC, which was designed for applications with high memory requirements and allocation rates (though it. The argument "Xmx" is used to specify the maximum memory usage by Minecraft on your system. 2] [intellij] debugging vanilla minecraft √完了しました！. Method one: JVM arguments. The RAM that can be used by Minecraft should now be increased. -Xmn128M is the minimum and can be safely left out -XX:+UseG1GC tells the JVM to use the G1 garbage collector -XX:+UseConcMarkSweepGC tells the JVM to use the Concurrent Mark Sweep collector The rest of options is just tuning for the selected GC. Windows + Defender + Background apps eat about 3-4GB, so I have about 4GB RAM left. WARNING! Changing your JVM Arguments might cause your game to malfunction, just. Proceed to change “ 2G ” to “ 4G ” or another reasonably high value. 10 single player with 100ish mods, on an i7-3820 with 8 gb of RAM, and a Radeon HD 6800. 6. To allocate this amount of memory to Minecraft, go into your game instance's "JVM Arguments". App consumes on 40% of real memory and less than 10% swap space when configured to use -XMs=512m -Mmx=1024m -XX:MaxPermSize=256m. Windows needs ram for itself too. Step 5- Hover over your desired version and click the 3 dots icon highlighted below and click edit: Step 7- Under “JVM arguments” edit the 2 gigabyte entry “-xmx2G” to your desired amount of RAM and click “Save”. This line determines the maximum amount of RAM allocated to Minecraft. Allocate at least 2 gigabytes of memory to minecraft-Xmx10G: In this example, we allow minecraft to consume up to 10 gigabytes of memory. There is no way for you to both use less CPU and memory while getting more FPS. Views. Después, elige la cantidad de RAM que quieres de esta tabla: 2GB: -Xmx2G 4GB: -Xmx4G 6GB: -Xmx6G 8GB: -Xmx8G etc. 6 x 1024 = 6144, so you write 6144. After you've chosen your RAM, change the part in JVM Arguments that says -Xmx2G (or whatever it says), and. The rising cost of living continues to affect us. Generally, when I need more memory for Minecraft, I set the max heap and not the min heap. In order to get that line of commands is going Launch Options > Profile> JVM Arguments On > And that is what is in the JVM arguments. "-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. Arguments minecraft. It isn't supported by all vendors, so check if your vendor supports it <a href="…Today I will be showing you a few simple steps on you to allocate or add more RAM to your Minecraft. Abra la aplicación FTB y haga clic en Library en la esquina superior izquierda. Allocating memory just means how much it is allowed to use. Add a comment. Select "More Options" in. for now, i'm using -Xmx3G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M and I currently have 16GB of. Make sure both the. The first part should say: ". CustomOpts - Extra arguments to pass to Java when starting the Minecraft server. -Xms4G -Xmx4G -Xmn512m -XX:+AggressiveOpts -XX:+AlwaysPreTouch -XX:+DisableExplicitGC -XX:+ParallelRefProcEnabled . Step 3: Click on the Java/Minecraft tab. Hello! I have created a Java argument to speed up the loading of the world. The 8GB memory should now appear at. For most players, allocating more RAM might not even be necessary. These flags work and scale accordingly to any size of memory, even 500MB but modern Minecraft versions will not do well with such low memory. set jvm arguments to use half. During gameplay, it can get to 50%. txt file says this. 3. Mods, resource packs or view distances above 16 are the only reasons to make it any bigger though. It means that the OS is free to use the memory as it likes, until Minecraft actually wants to use it. I have been dedicating 8-9 gigs to the pack but get sudden freezes for around 10 seconds ever 20 minutes or so. After that, the full argument should be “-Xmx8G”. 25 players and 40 mods: at least 4 GB of RAM. 13+ minecraft just needs 4gb for vanilla itself to run fine. Step 1 - Open the Launcher. For example, if you’d like to allocate 8GB to Minecraft, change the number to 8. Use the JVM arguments from step 4 below in the JVM Arguments field. Busca el modpack que desees y selecciónalo de la lista. Always ensure that your system has at least 2GB of RAM leftover. In the “JVM Arguments” box, you will see a line of. exe file. This will, in turn, help reduce lag. 7. Mar 13, 2021. REM Forge requires a configured set of both JVM and program arguments. 10 Forge 10. As chickenmac says, make the game only use 2-4gb of RAM. 7, and 2-7 is a large range, so it’s having to regularly clear out a much of memory. txt file and to add ant custom program Args to the run. The line below shows 3 JVM arguments. We need to use the JVM arguments to do this. Click to expand. May not be able to help without actually using my pc, but again, I don't know how any of this works. An average-sized server that doesn’t have hundreds of plugins will run just fine if you allocate 8GB of RAM XMS and XMX if you’re using a dedicated machine to run the. ”. The Raspberry Pi 4 is available in different memory configurations all the way up to 8 GB. rmi. Oracle 32 bit heap FAQ. Se você for analisar a documentação da JVM temos muitos argumentos para poder configurar a Java Virtual Machine. Minecraft – allocate ram for minecraft – love & improve lifeAllocate allocated √完了しま. If you want to add a MAX amount of RAM Change -Xmx1G to -Xmx and then the number of ram you want and then the unit, so for 512 MB do -Xmx512M and for 8 GB do -Xmx8G. now in the bottom right next to the resolution settings it will say ''more options'', click on that writing and scroll down, their should be a box that says ''JVM ARGUMENTS'', enter you're desired argument and. Start the Minecraft launcher & go to the installation tab. Web 9 14 comments best suddenhana • 2 yr. CryptoTo limit the total RAM consumption, use MaxRam flags. • 3 yr. -Xms. Right-click on the FeedTheBeast icon and click “Edit Profile. D:BudgieCraftMC - Modded>REM Add custom JVM arguments to the user_jvm_args. Do not allocate more memory than you have physically in your system. Use these flags exactly, only changing Xmx and Xms. For our mental health and financial wellbeing, it was, unfortunately, a necessity to shut down CubedHost. This means that your JVM will be started with Xms amount of memory and will be able to use a maximum of Xmx amount of memory. That's what you need to change. This can have good effects as well as bad effects. Modded Minecraft. The 2G portion of that denotes the 2GB of RAM that Minecraft has allocated to it. I believe Purpur is useful for survival servers due to its extra configuration options. That will allow a max of 1GB of memory for the JVM. Más ram para minecraftMinecraft refuses to use more than 1g of ram, even via command prompt Minecraft jvm arguments 8gb ramMinecraft jvm arguments fps boost 2022. If you have less than 4GB of RAM, type -Xmx2G into the text box. I recommend leaving the others alone) -client. Minecraft will usually only use one third of a gig. How to Allocate More RAM to Minecraft on a Windows PC - MiniTool. g. This will create a new text document in the same location as the minecraft_server. That’s why the default configuration is a relative value (in some environments) even when not running inside a container, as the JVM can’t predict a useful absolute value for an arbitrary application. exe* of java. This gets all pages into the memory before entering the main() method. as the other person said its 6144. If you have more than 8GB, allocate 4GB, and if you have less than 8GB, take your memory amount and half it. . server. Step 4: Click on the maximum memory tab and enter the amount of RAM you want to allocate. Hi, Minecraft need quite alot of RAM to run properly, however too much RAM will actually bring about a negative benefit. Heya! After you install vivecraft, find it in the installations tab in the mc launcher and open it's installation settings, expand the advanced drop-down at bottom and u should see a text box that says "JVM ARGUMENTS" above it, you should see some text like "-Xmx4G" all though the number may be different for you, anyways change that number to. This JVM argument is used to specify the minimum amount of RAM to allocate to Minecraft. Java. That's what you need to change. I love to play modded minecraft but my laptop is a bit of a potato. 14. When I look up the process' RAM usage it's about 5,5gb but adding this amount to the 2,5gb in idle would be a total of 8gb(50% total RAM usage). I recently decided to allocate more ram to my game. Sources: . 17. You will see a thing called JVM ARGUMENTS pop up in your configurations. Certified_Bruh2111 3 yr. In the Performance tab, select “Memory. MundysPubes 3 yr. -Xmx: Sets the maximum size of the heap. Click on the More Options. netty. Du siehst einen Text im Textfeld "JVM Arguments", dessen erster Abschnitt -Xm1G lautet. # They can take any number, followed by an M or a G. Em “Configurações de Java (Avançado)”, marque a opção "Argumentos da JVM” para que possa inserir comandos e modificar o Minecraft. The trick is to change the JVM arguments, use Shivaxi's JVM argument string from his page and change the allocated RAM to 8GB and the last argument is -Xmn128M, change that to between 2G and 4G; -Xmn2G, -Xmn3G or -Xmn4G. Click the Installations tab. Source: Google/StackOverflow. Min/Max Allocated Ram to your Minecraft client. Java RAM: Short answer. rmi. 9 Step 1: Check Available RAM Each program requires a set amount of RAM to run. In order to do so, you will need to right-click the project and click the Edit menu. Ändere die "1" auf die Anzahl der GB, die du für Minecraft verwenden willst. Change the command “-Xmx2G” to “-Xmx [ desired amount of RAM in gigabytes ]G”. Scroll down to JVM Arguments, then locate the -Xmx2G parameter. Make sure the JVM Arguments checkbox is checked. Locate the -Xmx2G parameter. Use -Xss to set the Java thread stack size. 4 gigs - Xmx4G. I didn't notice any gains after going above 16GB. However, RAM allocated to Minecraft should be increased. Select Settings and then the Java/Minecraft tab at the top of the screen. If we had continued, we would have been on a course for a much worse ending. Run. Jvm Arguments Minecraft 8Gb Ram. Allocate More RAM in Minecraft Launcher. Web the line below shows the 3 most know jvm arguments. UnsatisfiedLinkError: org. minecraft jvm arguments list 210907-minecraft jvm argumentsPerformance optimization. Forge 1. GraalVM Enterprise Edition. For example, if the line reads “-Xmx4G”, change it to “-Xmx8G” to allocate 8GB. Look for the “JVM Arguments” box. Allocating memory won't help with your frame rates if you aren't doing anything that requires a ton of RAM. The subreddit for all things related to Modded Minecraft for Minecraft Java Edition --- This subreddit was originally created for discussion around the FTB launcher and its modpacks but has since grown to encompass all aspects of modding the Java edition of Minecraft. Minecraft still runs at a very slow speed (still 120 fps but tps i believe) Post a screenshot with F3 enabled and your JVM arguments. I have adjusted mine for my 12GB ram computer, you may have to adjust the first few values up. The screenshot show's Minecraft's using about 3GB, so it's using less than allocated. OpenJ9. 12. Click on "More options" on the bottom. Launch the ATLauncher. -d64. Hotspot vs. Minecraft arguments are for who knows what. I've tried modifying the arguments, but I couldn't get them to work. i have allocated 4 gb of my 8gb of ram, and im playing on vanilla. 3 ways to allocate more ram to minecraft √完了しました！ minecraft jvm arguments list 210907-minecraft jvm arguments Minecraft using far more ram than allocated. 1. ตามค่า default Minecraft จะมี RAM ไว้ 1 GB แต่ก็. I haven't tried RLCraft, but I'm sure there will be an improvement. You dont need 8 gigs of ram allocated. Ändere die "1" auf die Anzahl der GB, die du für Minecraft verwenden willst. OpenJ9 Run 1: Time for Forge load: 4:01 40% Menu CPU idle 4. Aside from performance mods and arguments, what are you trying to run? If you want to play a heavy modded technical pack in the latest Minecraft version, i doubt it will ever work even at minimum settings with Sodium and stuff; but if you just want to play Minecraft but nicer (for example, a vanilla plus modpack in a version up to 1. Follow the steps below to allocate more RAM: Open the Minecraft Launcher. Once there, click the “Edit” option on the right side. ตามค่า default Minecraft จะมี RAM ไว้ 1 GB แต่ก็. Here’s how to do it: After opening the Minecraft Launcher, go to the Launch options tab. Sorted by: 1. Based on this, they think the game actually only needs about 384 MB of memory (-Xmn = 33% of heap size); not sure what you would set it to for different values of -Xmx (for example, I allocate 512 MB; 32 bit systems aren't that happy with more than this; at least in my experience higher render distances cause out of memory errors with 1 GB. This number represents the maximum amount of RAM allocated to Minecraft. Remove '-Xmx1G' or the default setting and replace it with the desired amount of ram you want by using the key below (Note: Putting too much RAM may have bad effects discussed above). Ashzification New Member. GreedyCraft is a mega hybrid modpack featuring 500+ mods (shows ~540 loaded in game). You can change that to 8 or 16 GB, for example, and save it. XPG Spectrix D50 16GB (2 x 8GB) DDR4 3200MHz Desktop Memory. For example, “2G” is equal to 2 Gigabytes of RAM, while “4G. For instance, if we set-XX:InitialRAMPercentage=50. Minecraft cannot handle anything more than 4gb (for vanilla and 4-8gb depending on how modded it is). In the “Target” field, add “-Xmx2G” to the end of the line. Tick the box next to 'JVM Arguements'. What . Memory 8 GB or more. To assign more RAM to the default Minecraft launcher, you need to do the following: Open your Minecraft launcher and click on the Installations tab. In general, the defaults are best. If we want to set the environment to 64 bit manually, we can do so using the below parameter: -d<OS bit>. Increasing the dedicated RAM further can lead to problems like stuttering. So, I recently found out about directly allocating RAM using some JVM argument. There is no way for you to both use less CPU and memory while getting more FPS. Minecraft jvm arguments 8gb ram- However, unless you're playing with Mods, you'll never need more than 8GB RAM to run Minecraft If you have 8GB of RAM, you won't need to add more than 75% of it, or 6GB, which will enough Some modded Minecraft games need more than 8GB of RAM to function properly Minecraft is an. -Xms: this option sets the initial and minimum Java heap size. 7. # For example, to set the maximum to 3GB: -Xmx3G # To set the minimum to 2. ). This is the text that allocates RAM to your Minecraft client. 3. mui-. Even loaded up vanilla and was still a memory leak. We would like to show you a description here but the site won’t allow us. 12. This argument can be omitted. JVM options that affect memory use. -XX:MaxGCPauseMillis=120 Pause between garbage collection cicles in milliseconds. I have set Twitch Launcher to use 5GB, 6GB, and 8GB as the max. The 8GB memory should now appear at the top right. Just make sure to leave your system some room to breathe. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. Half of 12 would be 6GB (Of course, that would be a little overkill), so you would put 6GB (My half) into the. 5 Java minecraft, I realized that the information on possible combinations and compatability is kind of all over the place. ”. # To set the minimum to 2. Note that the Max ram you allocate will be unusable by the rest of your system so there is really no point in setting the Min amount lower. Sorted by: 51. # To set the minimum to 2. To increase the amount of RAM used by Minecraft, you will need to change the JVM arguments. RAM is one of the most necessary resources for the FPS boost. Step 3: Click on the Java/Minecraft tab. Hey all, I'm looking for the best JVM arguments I can use on my computer. Aug 22, 2013A modal will appear and More Options will be available in the bottom-left. Recommended JVM Startup Flags. I have readed that CMSIncrementalMode and Xmn are not usefull, right ? The point of JVM arguments are to allocate more memory for your Minecraft. I am running Java 64 and minecraft server has been multi-core capable since 1. With the new launcher, it is allot easier to allocate RAM to your Minecraft. A continuación, debe ir a la versión que desee (haga clic en Última versión) y marque la casilla Argumentos JVM. -XX:PermSize: Sets the initial size of the Permanent Generation (perm) memory area. The trick is to change the JVM arguments, use Shivaxi's JVM argument string from his page and change the allocated RAM to 8GB and the last argument is -Xmn128M, change that to between 2G and 4G; -Xmn2G, -Xmn3G or -Xmn4G. e. Minecraft still runs at a very slow speed (still 120 fps but tps i believe) Post a screenshot with F3 enabled and your JVM arguments. For minecraft, the two biggest ones are; -XX:+UseG1GC and -XX:+UseConcMarkSweepGC As a note, -XX:+UseConcMarkSweepGC has many settings to it as outlined in the fasterj post.