JDK; JDK-8204612; Make dynamic parallelization of reference processing work default in G1Go to the launcher. The idea seems to be perfect for a game server, which includes of course Minecraft. Best values for min-max RAM, Xms & Xmx arguments. 17以后更新J16什么表现暂且留作讨论，但我觉得顶多修修bug不会有质变。JAVA环境使用llireta创造服全物品中心进行静态测试，带出生点一共近万漏斗数百实体比较能反应一般生电服的静态卡顿情况。Saved searches Use saved searches to filter your results more quicklyWhen vanilla finally switched to Java 8 I remember hearing that Forge contributors were quite happy that they could start using lambdas. Reference processing isn’t usually a big deal for Cassandra, but in some workloads it does start to show up in the GC logs. jar. papermc. I'm able to go from 3 to 15 chunks of render distance, though the issue returns when I tried 23 chunks. At the time of writing: jdk-11. Some app uses weak references (say for caching, and it does not mind if JVM gabbage collects these cache lines to “effectively” increase the cache size), then GC spends a lot of time trying to figure which references can be cleaned up. Learn more about Teams +ParallelRefProcEnabled: Optimizes the GC process to use multiple threads for weak reference checking. This can be checked using following command 'ps -ef|grep solr'. 15. Db2 considers only parallel. But further increasing Xmx seems to make no difference (I've tried 3g, 4g). Symptoms: High p99 read/write latencies (because of long GC pauses) High CPU causing lower read throughput (because of low GC throughput) Dropped mutations (because of full GC collections on. 9. According to the Spark Documentation on Launching Application with spark-submit the spark-submit command has the following syntax: . -XX:+UseG1GC # ## Have the JVM do less remembered set work during STW. Conclusion You signed in with another tab or window. exe -Xms2048m -Xmx4096m -jar spigot-1. Please keep in mind that using other flags will either: ; Increase general CPU usage and provide minimal. 文章浏览阅读2w次，点赞2次，收藏16次。java高分局之JVM命令参数大全（高级垃圾回收选项）这些选项控制Java HotSpot虚拟机怎么进行垃圾回收。 - -XX:+AggressiveHeap java堆最佳化设置。设置多个参数使长时间运行过的任务使用密集的内存分配。 默认这个选项时关闭的，也就是堆不是最佳化。In July Monica Beckwith explored the theory of the new G1 GC Garbage First Garbage Collector. lang. Here you can find testing results of G1, Parallel, ConcMarkSweep, Serial and Shenandoah garbage collectors in terms of scaling and resource consumption, as well as some suggestions on what settings can be applied to improve results. Hello, I have a vanilla project. It seems to be much worse with multiple core system. I think this means that your server is out of RAM. check_jvm checks various properties of locally running JVMs and returns performance data. Saved searches Use saved searches to filter your results more quickly2) Put the one you downloaded . -Xms12G -Xmx12G -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions . A high-level technical description of the changes is available here. Backup Jenkins Home, especially your jenkins. Atm 8 Jvm arguments. 参数:ParallelRefProcEnabled 用法: -XX:+ParallelRefProcEnabled. . This question already has answers here : Closed last year. When I did I watched the console. Status. This gets all pages into the memory before entering the main() method. Java 17 is mainly for 1. Display results as threadsServer lag spikes - help · Issue #276 · AllTheMods/ATM-8 · GitHub. The -Xmx flag set the max heap size to a fixed size. sh. The basic syntax for a. Prerequisites. The "Old Gen" graph on site you used shows heap usage for Old Gen is not falling after GC. /start. A high-performance fork of Paper designed for large servers. Most of the GC pauses are well under 2 seconds, but we have 11 outliers - long Full GC pauses of 2-12 seconds. 55=-XX:G1HeapRegionSize=32 wrapper. What behaviour is expected: Server to shut down and start its self again. Teams. These pause time is not acceptable to our. 描述: 主要是弱引用场景（比如缓存, 它不介意JVM垃圾回收是否会收集）, 然而，GC会花很多时间尝试找出哪些引用能被清理，并且重新标记阶段默认是单线程的，通过配置-XX:+ParallelRefProcEnabled让这个阶段并行. Problematically, the memory usage is currently sitting at 11 GB and can get up to 15-16 GB while no more than 5 players are online. Since you're using the nashorn engine which dynamically generates bytecode it might also be an issue with class unloading or lack thereof, but that is not evident from your logs. Pull requests 4. The following represents an example of the above settings. . There are also general tunable parameters for the G1 garbage collector. According to the Spark Documentation on Launching Application with spark-submit the spark-submit command has the following syntax: . Today i got out of memory title, but i had enough free ram (about 800mb). Currently using set 1 as it is the one that gives me the most time before the server runs out of memory. We use a LOT of weak references, so should have big impact. Step 8 -. . awt. The ONLY gc-root reference in the heapdump to all of the leaked CraftWorlds and CraftPlayer is the entry in WeakHashMap, key being CraftPlayer. It is worth noting that this option doesn't do very much and hasn't done for years. Step 2 - Install Java and Git. 7. 4, but has since then reproduced on Adoptium 8. To enable Garbage Collection logs, the below properties should be defined: 1 -Xloggc:<node temporary directory>/gc_node_%t. 2. My server application under load some times goes unresponsive and i found the issue to be related to very long "GC Remark". 9. Which, according to hotspot-runtime-dev discussions, will prevent some performance monitoring command line tools from discovering running VMs automagically. This makes sense since requests take 30-40ms and most of the objects lifetime is tied to the request lifetime. 1. :/. -XX:+CMSScavengeBeforeRemark (default false)Bobcat00. Create a new installation, call it whatever you want. 04. Hello, I have a vanilla project. Search titles only; Posted by Member: Separate names with a comma. Raw. Reload to refresh your session. Please note, this is still legally binding that you have read and agree to the Minecraft EULA. additional. KubeSphere 开发者社区，提供交流 Kubernetes、Istio、Jenkins、Prometheus、EFK 等云原生技术的平台。. In terms of reducing lag spikes I got very good results using the Shenandoah GC. [ ] import os. Since the introduction of this feature in G1 in JDK 11 we have not heard complaints, so this seems appropriate. the only difference being populating the core key in the result. 2 for now, but future dev builds may break on 1. I seem to have a memory leak on my server. GitHub Gist: instantly share code, notes, and snippets. txt' and write the following. Pastebin is a website where you can store text online for a set period of time. This tells Java to use a minimum of 2 GB and a maximum of 4 GB for the heap. java. I have two services that are almost identical, except for the paths. > > A note was just recently added to the Lucene wiki,. jmeter -n -t test. By including the -XX:+ParallelRefProcEnabled. Using sbt 1. bat (start. A common set of GC flags is Aikars flags, but they have their limits since as good as they may be, the GC still has. Its default is calculated based on. jar. モジュール化やProject PortlaによりGCを限定したビルドが作成可能. Run your JMeter script in command-line non-GUI mode like. Throttling. I have followed the tutorial for Ubuntu 20. Using Aikar Flags is relatively simple and only requires a few adjustments depending on what brand of server is in use and how much memory (RAM) is allocated to the server instance. <removed incorrect comment> Changed synopsis from: VMark Stability Test crash x64 Solaris 64 bit 6. I tried different RAM allocations: 4GB, 8GB, 12GB since only 2 Players play on my server 4 GB should've been statistically enough. Thus, to execute forge on Java 8, you don't want to execute the plain java command, since that is java 15. 序言：一个原本活蹦乱跳的男人离奇死亡，死状恐怖，灵堂内的尸体忽然破棺而出，到底是诈尸还是另有隐情，我是刑警宁泽，带. I have checked that Java 17 is installed on the server I’m using. 0 of the 1. The parallel reference processing code was being surprised by this. ok so ill have to either roll back to the previous dev build, or use the latest stable build for 1. Then executing the plain java command will execute with the Java 15 binary. This optimizes the garbage collector so it can use multiple threads for weak reference checking. An example for such output is User=0. Sorted by: 1. JDK; JDK-6662086; 6u4+, 7b11+: CMS never clears referents when -XX:+ParallelRefProcEnabledI was curious about this topic, because when searching about this topic I wanted to check that JVM was better to run a minecraft server but I didn't find any, so I made some tests with the following JDK: - AdoptOpenJDK 8 OpenJ9. It contains over 800 mods, from dimensions and biomes to entities, blocks, items and more, making the game much more difficult than before. If it worked, you should now receive a console similar to the output in the next section. Search Zulu JDK11 Options: Name. The max memory GC will use. Using ChatGPT as a resource to write this, I created an automatic updater and start server script that does this for me. then copy the contents of the RL Server from where you first launched it to that directory. When I check => Home »System Health »Process Manager the first proccess I always see is by user cpanelsolr and the command is:edited. Download the latest Java 11 Compressed Archive (zip) file. ohhhhhh. 3. I'm currently running a vanilla SMP with the following run command: java -Xms6G -Xmx6G -XX:+UseG1GC -XX:+ParallelRefProcEnabled…This overwrites the files in the directory with the SAP Commerce specific setup. This is the log output from gc logs. txt and change "false" to "true", then create a . . Guess I'm just not sure what version of forge to use?Two of the > > settings on that list were critical for making the performance > > acceptable with my testing: ParallelRefProcEnabled and G1HeapRegionSize. 8. WORK AROUND Do not use -XX:+ParallelRefProcEnabled when running on a single core platform (or prset). Just posting the suggested start parameters here for reference: java -Xms6G -Xmx6G -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:MaxGCPauseMillis=100 -XX:+DisableExplicitGC -XX:TargetSurvivorRatio=90 -XX:G1NewSizePercent=50 -XX:G1MaxNewSizePercent=80 -XX:G1MixedGCLiveThresholdPercent=35 . 但是被提醒，发现即使在分配4核的容器上，GC线程数也为38。. log 2 -XX:+PrintGCDateStamps 3 -XX:+PrintGCDetails 4 -XX:+PrintTenuringDistribution 5 -XX:+PrintAdaptiveSizePolicy. -XX:+ParallelRefProcEnabled - ZGC uses a complex approach to cleaning up references. 76 server. Bruce Mar 15, 2022 @ 2:07pm. For the DO Ubuntu installation, I sftp'd the entire server directory to the server and attempted to start the server using a very similar systemctl service file: ExecStart=/usr/bin/java -Xms2G -Xmx2G -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:MaxGCPauseMillis=100 . Q&A for work. 8. Pastebin. Now set HEAP environment variable to increase the lower limit to 5G and the upper limit to 10G. garbage-collection. 4. Pastebin. cd /opt/solr. gc() call triggering full GC, instead trigger G1 Use of -XX:+ParallelRefProcEnabled flag decreased the pause time of PhantomReference to 0. com is the number one paste tool since 2002. This mod reduces the memory usage of Minecraft in a few different ways. 3) 맵 크기에 맞춰서 시간을 기다려 줍니다. and save in the folder. Still there were seven pauses in two minutes. 5gb], real usage: [53028224688/49. I am specifying javaOptions just like seen in the documentation. #3 kults, Oct 24, 2022. ZGC is a new one being "production-ready" starting Java 15 (the latest JDK version) ZGC is also a concurrent garbage collector focusing on latency instead of G1 being a tradeoff between latency and throughput. 16. 17. 1 / 1. 19. - AdoptOpenJDK 11 OpenJ9. In Wireshark pcap capture we see the HTTP request message resulting from the below curl command. RAM - 8GB. 07-02-2008 EVALUATION The problem was that +ParallelRefProcEnabled was being used in the case of a platform with just a single core. In fact you don't (and probably shouldn't) even need to declare a port mapping for that container. Show All bool ccstr ccstrlist double int intx size_t uint uint64_t uintx. The text was updated successfully, but these errors were encountered:This is a place to get help with AHK, programming logic, syntax, design, to get feedback, or just to rubber duck. Most of the objects are created during protobuf deserialization time. java -Xms512M -Xmx512M -jar waterfall-###. Its default is 256k, but I tried 1m and 5m. By default, this option is disabled. sh file inside bin folder and hit the below command. If you still need more, ram to run your minecraft server, you could try -Xmx5120M -Xms5120M which will allocate 5gb. Click the installations button at the top. exe" -server -XX:VMOptionsFile="java15. 0. Workaround. You need to be a member in order to leave a comment @Dmitry1,. 00s Real=0. 존재하지 않는 이미지입니다. Open your terminal, navigate to the saved location, and then run. . This page does not duplicate the descriptions provided by the. -Xms4G -Xmx4G -Xmn768m -XX:+AggressiveOpts -XX:+AlwaysPreTouch -XX. Turning on ParallelRefProcEnabled helps collect reference objects (e. As you noted yourself it spends a lot of time in JNI ref processing. G1RSetUpdatingPauseTimePercent=5: Default is 10% of time spent during pause updating Rsets, reduce this to 5% to make more of it concurrent to reduce pause durations. - AdoptOpenJDK 11 HotSpot. ZGC supports heap sizes from 8MB to 16TB. java. 0injava -XX:+PrintFlagsFinal GarbageCollection [Global flags]. I haven't been able to benchmark it myself by lack. 选项 -XX:ParallelRefProcEnabled 现在默认为 true（启用） 在有多个线程可用于垃圾收集的机器上，这一变化显着改善了垃圾收集暂停的这一阶段。 如果您遇到垃圾收集暂停增加的情况，您可以通过在命令行上指定 -XX:-ParallelRefProcEnabled 来恢复到原始行为。Hey all, I recently onboarded a client with probably 100+ mods on their Forge 1. JvmInspector is standalone tool + Nagios wrapper plugin (check_jvm) that dumps various properties from locally running JVMs. docker run -e JVM_XX_OPTS=-XX:+UseG1GC -XX:+ParallelRefProcEnabled ^ | Without quotes, the shell thinks this is the start of a new argument This ambiguity is one of many reasons I prefer the object style declaration of environment in compose files: In between the CMS and GC Logging sections, there should be one more section in that file- the G1 section, which looks like this: ### G1 Settings (experimental, comment previous section and uncomment section below to enable) ## Use the Hotspot garbage-first collector. 2 . This question already has answers here : Closed last year. OpenJDK flags ReferencesPerThread and ParallelRefProcEnabled Solution Unverified - Updated 2021-09-24T21:58:45+00:00 - EnglishFrom what I've read online, it sounds like a lot of people recommend setting the -XX:+PerfDisableSharedMem JVM flag to fix high GC pause latencies due to IO blocking when the garbage collector tries to write to /tmp (hsperfdata). Step 3 - Create a Minecraft user. We also see the JNDI exploit strings in the path parameters. {"payload":{"allShortcutsEnabled":false,"fileTree":{"pages/minecraft-java/managing-server":{"items":[{"name":"aikar. 5gigs of ram usage and kept going up. -XX:-UseAdaptiveSizePolicy is great, however, it should be used with -XX:+ParallelRefProcEnabled right after. There is zero tolerance for incivility toward others or for cheaters. These notes describe important changes, enhancements, removed APIs and features, deprecated APIs and features, and other information about JDK 17 and Java SE 17. When a player joins, its a new entity that is being spawned into the world, which uses processing power and ram. EXAMPLES: When subsequently trying t. Paper is a high-performance fork of Spigot. The option “-XX:+ParallelRefProcEnabled” enable parallel reference processing whenever possible. Open your terminal, navigate to the saved location, and then run. 5-7 gigs of memory usage it would become very CPU intensive and TPS would just drop to the floor. To display the JVM status for a JBoss EAP server in a managed domain: Select the Runtime tab, and then select the server group and server that you want to view. )Wait approximately 1-2 minutes, then try to access your own server via the Minecraft java edition. A basic bash startup script with aikar's flag for starting Minecraft servers. For each N references defined by the -XX:ReferencesPerThread flag a single thread will be used. + Quote Reply. 하지만 이번에는 서버를 운영하는 동안 최적화 문제가 생기는 경우가 발생할 것을 대비하여 최적화 방법을 미리 알리고자 합니다. ExportZGC stands for Z Garbage Collector, a garbage collector, put simply, is a thing that frees up memory for further use within your server. -XX:+UseG1GC -XX:+AlwaysPreTouch -XX:+UseStringDeduplication -XX:+ParallelRefProcEnabled -XX:+DisableExplicitGC. 존재하지 않는 이미지입니다. -XX:+ParallelRefProcEnabled -XX:ReferencesPerThread=1000 -XX:ReferencesPerThread determines the degree of parallelization: for every N Reference Objects one thread will. Turns out, since most Minecraft mods are made by hobbyists and not experienced coders, there are some bad programming habits that are common to them, and one of those appears to be calling explicit garbage collection, way too frequently, eating massive amounts of CPU time. What behaviour is observed: Server shuts down and does not re start. They are common to all JVM garbage collectors. This modpack is a huge collection of mods for Minecraft 1. G1GC is mainly designed for one thing, keeping your application responsive by: trying to avoid that garbage collection of the "old gen" (the tenured objects that the application has hold on to for some time, like from a user session, cache, or some kind of memory leak) must be done in a single classic FullGC where your application is frozen. This information includes: * Heap & non-heap memory. Sorted by: 1. Hey there I am using a pebble host server. Download the fabric server jar file for the mc version you want and put it in a new server folder anywhere you want, then open the . A high-level technical description of the changes is available here. 15_windows-x64_bin. ref. minecraft","contentType":"directory"},{"name":". 2. let me try to explain the message in more detail: [parent] Data too large, data for [<transport_request>] would be [53028227584/49. Setting this value to 0 will tell the G1 garbage collector to always use the number of threads specified by the -XX:ParallelGCThreads flag value. I use VDS with such parameters: 8gb ram, 2x core i7-8700k (4. Today I decided to start it. 0 (build 13) version. Microsoft has confirmed that this is a problem in the Microsoft products that are. By including. 2]. The script seems to require an argument which should be the jar name. The amount of memory saved will depend on the pack, in version 1. JvmInspector is standalone tool + Nagios wrapper plugin (check_jvm) that dumps various properties from locally running JVMs. jar file to a specific folder, then create a file in it start. Setting this value to 0 will tell the G1 garbage collector to always use the number of threads specified by the . x you can use java 16. Display results as threadsbomber1992 commented on Nov 14, 2022. * Loaded classes. It seems, that you have a pretty big live data set (29G still occupied after a Full GC, which would be 85% of your entire heap), which means that the objects residing in the old region are simply not eligible for collection. Still there were seven pauses in two minutes. -XX:-UseAdaptiveSizePolicy and -XX:+ParallelRefProcEnabled are parallels to is a variant to -XX:G1NewSizePercent=20 and -XX:G1ReservePercent=20. You switched accounts on another tab or window. Also, it's recommended if you use java -Xms10G -Xmx10G -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch . 日本核电站爆炸内幕. java -Xms2G -Xmx2G -XX:+UseG1GC -XX:G1HeapRegionSize=4M -XX:+UnlockExperimentalVMOptions -XX:+ParallelRefProcEnabled -XX:+AlwaysPreTouch -jar bungeecord. 2 then. 8. However, this tuning case led us to believe that for HBase heaps without a clear choice of region size, in our case 40+ GB, it’s much better to err on the side of fewer, larger regions. In this second installment, Monica delves into more practical aspects and provides guidance for tuning. As for versions which supported Java 8, Java 9 introduced a ton of backwards compatibility issues and muddied the waters of using later versions of Java. You need to be a member in order to leave a comment Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand これまでは使用できないGC (例:minimalなJVMビルドではG1は使えない)を指定した場合は警告メッセージを出しつつ別のGCを利用して起動していたが、Java 11からは直ちに終了するように修正された. I believe problem is related to inappropriate JVM params. You need to change your running arguments to the ones supplied on their discord. -XX:+ParallelRefProcEnabled：默认为 false，并行的处理 Reference 对象，如 WeakReference，除非在 GC log 里出现 Reference 处理时间较长的日志，否则效果不会很明显。-XX:+ScavengeBeforeFullGC：在 Full GC 执行前先执行一次 Young GC。-XX:+UseGCOverheadLimit：限制 GC 的运行时间。 According to G1GC documentation, the ideal region count is 2048, so 16 MB regions were perfect for a 32 GB heap. 4 set to 14336mb of ram. minecraft) Click more options. G1RSetUpdatingPauseTimePercent=5: Default is 10% of time spent during pause updating Rsets, reduce this to 5% to make more of it concurrent to reduce pause durations. It keeps crashing every 3-5 days depending on the amount of players online. Since the introduction of this feature in G1 in JDK 11 we have not heard. 0. Create an account or sign in to comment. By default, this option is. GC pauses of up to 200 milliseconds are usually considered acceptable because the server is able to immediately catch up following the pause, so there is no noticeable impact on gameplay. Java 17 is noticeably faster than Java 11 in my small-scale experiments. 20. mrubin commented on Jan 8, 2021. 3. Invicta. 7. JDK-6659981 : +ParallelRefProcEnabled crashes on single core platform Type:Bug Component:hotspot Sub-Component:gc Affected Version:6,6u5 Priority:P3 Status:Closed. For other options use help command. Eden space fills up and a GC pause is triggered. This mod reduces the memory usage of Minecraft in a few different ways. They can still attach to the running process if the PID is specified explicitly. This page does not duplicate the descriptions provided by the. Those are troubling; we'll take a deeper dive into their causes in a second. Posting on a closed issue saying the crash still exists will prompt us to investigate and reopen it once we confirm your report. jar. 使用llireta创造服全物品中心进行静态测试，带出生点一共近万漏斗数百实体比较. Author: Bobby Recently, my colleague talked about the ParallelGCThreads parameter of Java. I believe it is a bug that might not be addressed yet. 17以后更新J16什么表现暂且留作讨论，但我觉得顶多修修bug不会有质变。. On a side note: UseCGroupMemoryLimitForHeap VM option has been removed in JDK 11 (and replaced with UseContainerSupport) - you may be using jdk11 Jenkins image. 47 PARALLEL_ENABLE Clause. -Xms<var> -Xmx<var> -Xmn<var>. UPDATE: Changing the Xmx value from 512m to 2g reduced the time from ~150 seconds down to ~50 seconds. 1. I used to make a difference in early versions of Java 6 as it had leading edge optimisations included, but over time these became the default. Hi Guys, I have noticed some chokes = slowness on single node jenkins instance. -XX:+ExplicitGCInvokesConcurrent # Avoid explicit System. For example: Code (Text): java. OpenGL was long known for having garbage performance (at least on Windows systems) with AMD Graphics Cards. Oracle recommends setting the minimum heap size -Xms equal to the maximum heap size -Xmx to minimize garbage collections. FunPattern3226 • 1 yr. [18:17:20 WARN]: java. -XX:+ParallelRefProcEnabled - ZGC uses a complex approach to cleaning up references. Hi, I am new in this modpack and I need some good jvm arguments. target [Service] Type=notify NotifyAccess=all ExecStart=<Path to start script> ExecStop=<path. com is the number one paste tool since 2002. 5G = 1536m-Xmx1536m-Xms768m-Djenkins. Suppose Java 15 is in your PATH variable. create a new text document and call it. Java 11 may have ok backwards compatibility, but Forge. To display the JVM status for a JBoss EAP server in a managed domain: Select the Runtime tab, and then select the server group and server that you want to view. Connect and share knowledge within a single location that is structured and easy to search. Display results as threadsG1GC remark phase is taking too long. Step 1 - Configure Firewall. This is single-threaded by default. 참고로 마인크래프트가 기존 PC용 자바 에디션과, 콘솔/모바일 크로스 플랫폼 을 지원하는. 8kb] Object creation & promotion rate: 132. 5 and 1. Article Number 000030656 Applies To RSA Product Set: RSA Identity Governance & Lifecycle RSA Version/Condition: All Issue If an AFX server is started as the root user, problems can occur that will prevent correct management of the server and its connectors. /var/games/minecraft/servers/ nameofserver. Intro. Performance Tools. 4. In the Monitor column, select JVM and click View . You're going to want to do this with both the local IP and your external ip/domain name. . We recommend using the latest snapshot builds to replicate the issue as bugs are constantly being fixed in the master branch Steps to reproduce the issue Please include bot. Step 4 - Download and install Spigot. x for a while now without issues. The change improves this phase of the garbage collection pause significantly on machines with more. C:Program FilesJavajre1. Choosing a Java garbage collector. Thanks a bunch! I'll try that out today. In some cases, the descriptions provide links to additional detailed information about an issue or a change. In the script below, there are a few variables that you will need to adjust to your specific server. 4. Even then remember that things like Java GC, CPU speed, memory speed, and having the index pre-warmed. · Issue #1 · LiamSho/mcsmanager-image · GitHub. The Z Garbage Collector is enabled with the command-line option -XX:+UseZGC. Parallelization of this just adds unnecessary overhead in this process. -XX:+ParallelRefProcEnabled-XX:ReferencesPerThread=1000-XX:ReferencesPerThreadによって並列度が決まります。 N 個の参照オブジェクトごとに1つのスレッドがReference Processingのサブフェーズに追加され、スレッド数は-XX:ParallelGCThreadsで制限されます。 Create an account or sign in to comment. java -Xms8G -Xmx8G -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:+PerfDisableSharedMem -XX:-ZUncommit -XX:+ParallelRefProcEnabled -jar server. Os also needs ram Second, tell us your cpu model if you use windows you can see it in: Windows Menu -> dxdiag As an example here is AMD Ryzen 5 3600X Third, you might need to change your configs - First see this guide: [GUIDE].