57 lines
1.5 KiB
Bash
Executable File
57 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
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set -eu
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memory_heuristic () {
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if [[ -v memory_heuristic_cache ]]; then
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echo $memory_heuristic_cache
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return
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fi
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local total_memory=$(free | awk '/Mem:/{print $2}')
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# Below 8 GB we assume this is running on a dedicated server, so we
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# allocate 75% of the RAM. Otherwise allocate 30%. This is not based on any
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# profiling or testing
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if [[ total_memory -lt 8388608 ]]; then
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memory_heuristic_cache=$((total_memory * 75/100))
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else
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memory_heuristic_cache=$((total_memory * 3/10))
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fi
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memory_heuristic_cache+=k
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echo $memory_heuristic_cache
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}
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# https://docs.papermc.io/paper/aikars-flags
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args=()
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args+=("-Xms$(memory_heuristic)")
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args+=("-Xmx$(memory_heuristic)")
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args+=("-XX:+UnlockExperimentalVMOptions")
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args+=("-XX:+ParallelRefProcEnabled")
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args+=("-XX:+DisableExplicitGC")
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args+=("-XX:+AlwaysPreTouch")
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args+=("-XX:+PerfDisableSharedMem")
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args+=("-XX:MaxGCPauseMillis=200")
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args+=("-XX:InitiatingHeapOccupancyPercent=15")
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args+=("-XX:SurvivorRatio=32")
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args+=("-XX:MaxTenuringThreshold=1")
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# G1 options
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args+=("-XX:+UseG1GC")
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args+=("-XX:G1NewSizePercent=30")
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args+=("-XX:G1MaxNewSizePercent=40")
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args+=("-XX:G1HeapRegionSize=8M")
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args+=("-XX:G1ReservePercent=20")
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args+=("-XX:G1HeapWastePercent=5")
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args+=("-XX:G1MixedGCCountTarget=4")
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args+=("-XX:G1MixedGCLiveThresholdPercent=90")
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args+=("-XX:G1RSetUpdatingPauseTimePercent=5")
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mkdir -p logs
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args+=("-Xlog:gc*:logs/gc.log:time,uptime:filecount=5,filesize=1M")
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args+=("-Dcom.mojang.eula.agree=true")
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args+=("-jar" "paper.jar" "--nogui")
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exec java ${args[@]}
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