#What should my startup flags be for this amount of ram?

1 messages · Page 1 of 1 (latest)

lean cape
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i want to use aikar flags but i dont understand very well what i should change based on the amount of ram my server has

civic bramble
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Don't use flags you don't understand, just look up each flag.

lean cape
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well thats not very helpfull

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java -Xms128M -Xmx28342M -Dlog4j2.formatMsgNoLookups=true -Dterminal.jline=false -Dterminal.ansi=true -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -XX:InitiatingHeapOccupancyPercent=15 -Dusing.aikars.flags=https://mcflags.emc.gs -Daikars.new.flags=true -Dterminal.jline=false -Dterminal.ansi=true -jar arclight-forge-1.16.5-1.0.25-SNAPSHOT.jar

Aikar's Thoughts
JVM Tuning: Optimized G1GC for Minecraft - Aikar's Thoughts

Learn more about my In depth study on tuning the G1GC garbage collector to be optimized for how Minecraft servers run, and keep low pause efficient usage.

stone basaltBOT
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Do not use the AlwaysPreTouch Aikar flag as it will preallocate all the memory and starve the container causing it to freeze or crash. Aikar's website warns of this.

Remove the flag or lower the Xmx to have overhead for the container, for example, with -Xmx$(({{SERVER_MEMORY}}-512))M

lean cape
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would this work?

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java -Xms128M -Xmx$(({{SERVER_MEMORY}}-512))M -Dlog4j2.formatMsgNoLookups=true -Dterminal.jline=false -Dterminal.ansi=true -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -XX:InitiatingHeapOccupancyPercent=15 -Dusing.aikars.flags=https://mcflags.emc.gs -Daikars.new.flags=true -Dterminal.jline=false -Dterminal.ansi=true -jar arclight-forge-1.16.5-1.0.25-SNAPSHOT.jar

Aikar's Thoughts
JVM Tuning: Optimized G1GC for Minecraft - Aikar's Thoughts

Learn more about my In depth study on tuning the G1GC garbage collector to be optimized for how Minecraft servers run, and keep low pause efficient usage.