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FIX #357 : Use CGROUP limit to determine Java Xmx parameter. #358

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Dec 2, 2019
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FIX #357 : Use CGROUP limit to determine Java Xmx parameter. #358

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9 changes: 8 additions & 1 deletion java/bin/java-dynamic-memory-opts.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,14 @@ die () {
# Required env vars validations
[ -z "${MEM_JAVA_PERCENT}" ] && die "Need to set env var MEM_JAVA_PERCENT"

MEM_TOTAL_KB=$(cat /proc/meminfo | grep MemTotal | awk '{print $2}')
MEM_TOTAL_KB=0

CGROUP_LIMIT=$(cat /sys/fs/cgroup/memory/memory.limit_in_bytes)
if [ $CGROUP_LIMIT -ne 9223372036854771712 ] && [ $CGROUP_LIMIT -gt 0 ] ; then
MEM_TOTAL_KB=$CGROUP_LIMIT/1000
else
MEM_TOTAL_KB=$(cat /proc/meminfo | grep MemTotal | awk '{print $2}')
fi
MEM_JAVA_KB=$((${MEM_TOTAL_KB} * ${MEM_JAVA_PERCENT} / 100))
[ -z "${MEM_JAVA}" ] && export MEM_JAVA="${MEM_JAVA_KB}k"

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