66 lines
1.9 KiB
Bash
Executable File
66 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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set -ex
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# Caluclate Memory Limit from cgroups/maxmemory
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MEMSIZE=$(grep MemTotal /proc/meminfo | awk '{print $2 * 1024}')
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if [ -f "/sys/fs/cgroup/memory/memory.limit_in_bytes" ]; then
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MEMLIMIT=$(cat /sys/fs/cgroup/memory/memory.limit_in_bytes)
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elif [ -f "/sys/fs/cgroup/memory.max" ]; then
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MEMLIMIT=$(cat /sys/fs/cgroup/memory.max)
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else
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MEMLIMIT=$(grep MemTotal /proc/meminfo | awk '{print $2 * 1024}')
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fi
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if ! [[ $MEMLIMIT =~ ^[0-9]+$ ]]; then
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MEMLIMIT=$MEMSIZE
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fi
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MEMLIMIT=$((MEMLIMIT<MEMSIZE ? MEMLIMIT : MEMSIZE))
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MEMOFFSET_THRESH=4294967296
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G1PARAM_THRESH=12884901888
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# Offset memory for Java by 1-1.5G depending on memory available
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if [ $MEMLIMIT -lt $MEMOFFSET_THRESH ]; then
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MEMOFFSET=1073741824
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else
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MEMOFFSET=1610612736
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fi
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SERVER_MEM=$((MEMLIMIT-MEMOFFSET))
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# Configure G1 parameters based on Java memory limits
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if [ $SERVER_MEM -lt $G1PARAM_THRESH ]; then
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G1NEWSIZE=30
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G1MAXNEWSIZE=40
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G1HEAP=8M
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else
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G1NEWSIZE=40
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G1MAXNEWSIZE=50
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G1HEAP=16M
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fi
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if [ -e "/server/modpack.json" ]; then
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mrpack-install --server-dir /server --server-file server.jar update "$@" <<EOF
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y
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EOF
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else
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mrpack-install --server-dir /server --server-file server.jar "$@"
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fi
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cd /server
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echo "eula=true" > /server/eula.txt
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cat eula.txt
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java -Xms$SERVER_MEM -Xmx$SERVER_MEM -XX:+UseG1GC \
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-XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 \
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-XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC \
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-XX:+AlwaysPreTouch -XX:G1NewSizePercent=$G1NEWSIZE \
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-XX:G1MaxNewSizePercent=$G1MAXNEWSIZE -XX:G1HeapRegionSize=$G1HEAP \
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-XX:G1ReservePercent=20 -XX:G1HeapWastePercent=5 \
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-XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=15 \
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-XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 \
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-XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 \
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-Dusing.aikars.flags=https://mcflags.emc.gs -Daikars.new.flags=true \
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-jar server.jar
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