Server Jar
Server RAM (GB)
Flag Type
Generated Script
What does this script mean?
Flag |
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-XX:+UseG1GC This turns on the Java G1 garbage collector. |
-XX:+ParallelRefProcEnabled This optimizes the garbage collector so it can use multiple threads for weak reference checking. |
-XX:MaxGCPauseMillis=200 This tells the JVM to delay the max garbage collection time of 200 milliseconds. This helps as long pauses for garbage collection will interfere with your server's performance. |
-XX:+UnlockExperimentalVMOptions This enables the experimental JVM scripts that have been tested by thousands of servers. |
-XX:+DisableExplicitGC This disables the System.gc() method call which prevents plugins from explicitly calling the GC. |
-XX:+AlwaysPreTouch This allocates all of the RAM for the server on startup so this prevents incremental allocations during runtime impacting performance. |
-XX:G1NewSizePercent=30 This gives the GC more room to space and results in less GC cycles preventing lag. |
-XX:G1MaxNewSizePercent=40 This gives the GC more room to space and results in less GC cycles preventing lag. |
-XX:G1HeapRegionSize=8M This sends fewer objects to the old gen so there is less time spent cleaning up old gen memory. |
-XX:G1ReservePercent=20 This allows more space for memory to move around. |
-XX:G1HeapWastePercent=5 Sets the percentage of heap that you are willing to get rid of. |
-XX:G1MixedGCCountTarget=4 This tells the JVM to reclaim old gen. |
-XX:InitiatingHeapOccupancyPercent=15 Sets the Java heap occupancy threshold that triggers a marking cycle. |
-XX:G1MixedGCLiveThresholdPercent=90 This sends fewer objects to the old gen so less time is spent cleaning up old gen memory. |
-XX:G1RSetUpdatingPauseTimePercent=5 Reduces the GC pause durations. |
-XX:SurvivorRatio=32 Minimises the survivor space as MaxTenuringTheshold was increased. |
-XX:+PerfDisableSharedMem Prevents the GC from writing to the file system as file system IO may take a very long time so we disable it. |
-XX:MaxTenuringThreshold=1 This slows down the collection of longer lived memory to therefore decrease pause times and improve performance. |
-Daikars.new.flags=true This notifies Paper timings system you are using Aikar's scripts. |
-Dusing.aikars.flags=https://mcflags.emc.gs This notifies Papers timing system that you are using Aikar's scripts. |
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