IM-server-new/distribution/src/main/scripts/wildfirechat.sh

#!/bin/sh

cd "$(dirname "$0")"

# resolve links - $0 may be a softlink
PRG="$0"

while [ -h "$PRG" ]; do
  ls=`ls -ld "$PRG"`
  link=`expr "$ls" : '.*-> \(.*\)$'`
  if expr "$link" : '/.*' > /dev/null; then
    PRG="$link"
  else
    PRG=`dirname "$PRG"`/"$link"
  fi
done

PRGDIR=`dirname "$PRG"`
cd ..
WILDFIRECHAT_HOME=`pwd`


export WILDFIRECHAT_HOME

echo $WILDFIRECHAT_HOME

if [ -f "${JAVA_HOME}/bin/java" ]; then
   JAVA=${JAVA_HOME}/bin/java
else
   JAVA=java
fi
export JAVA

LOG_FILE=$WILDFIRECHAT_HOME/config/log4j.properties
HZ_CONF_FILE=$WILDFIRECHAT_HOME/config/hazelcast.xml
C3P0_CONF_FILE=$WILDFIRECHAT_HOME/config/c3p0-config.xml

WILDFIRECHAT_PATH=$WILDFIRECHAT_HOME/
#LOG_CONSOLE_LEVEL=info
#LOG_FILE_LEVEL=fine
JAVA_OPTS_SCRIPT="-XX:+HeapDumpOnOutOfMemoryError -Djava.awt.headless=true"

## Use the Hotspot garbage-first collector.
JAVA_OPTS="$JAVA_OPTS -XX:+UseG1GC"

## Have the JVM do less remembered set work during STW, instead
## preferring concurrent GC. Reduces p99.9 latency.
JAVA_OPTS="$JAVA_OPTS -XX:G1RSetUpdatingPauseTimePercent=5"

## Main G1GC tunable: lowering the pause target will lower throughput and vise versa.
## 200ms is the JVM default and lowest viable setting
## 1000ms increases throughput. Keep it smaller than the timeouts.
JAVA_OPTS="$JAVA_OPTS -XX:MaxGCPauseMillis=500"

## Optional G1 Settings

# Save CPU time on large (>= 16GB) heaps by delaying region scanning
# until the heap is 70% full. The default in Hotspot 8u40 is 40%.
#JAVA_OPTS="$JAVA_OPTS -XX:InitiatingHeapOccupancyPercent=70"

# For systems with > 8 cores, the default ParallelGCThreads is 5/8 the number of logical cores.
# Otherwise equal to the number of cores when 8 or less.
# Machines with > 10 cores should try setting these to <= full cores.
#JAVA_OPTS="$JAVA_OPTS -XX:ParallelGCThreads=16"

# By default, ConcGCThreads is 1/4 of ParallelGCThreads.
# Setting both to the same value can reduce STW durations.
#JAVA_OPTS="$JAVA_OPTS -XX:ConcGCThreads=16"

### GC logging options -- uncomment to enable

JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCDetails"
#JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCDateStamps"
JAVA_OPTS="$JAVA_OPTS -XX:+PrintHeapAtGC"
JAVA_OPTS="$JAVA_OPTS -XX:+PrintTenuringDistribution"
JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCApplicationStoppedTime"
JAVA_OPTS="$JAVA_OPTS -XX:+PrintPromotionFailure"
#JAVA_OPTS="$JAVA_OPTS -XX:PrintFLSStatistics=1"
JAVA_OPTS="$JAVA_OPTS -XX:+UseGCLogFileRotation"
JAVA_OPTS="$JAVA_OPTS -XX:NumberOfGCLogFiles=10"
JAVA_OPTS="$JAVA_OPTS -XX:GCLogFileSize=10M"

#JAVA_OPTS="$JAVA_OPTS -Xmx128M"
#JAVA_OPTS="$JAVA_OPTS -Xms128M"


$JAVA -server $JAVA_OPTS $JAVA_OPTS_SCRIPT -Dlog4j.configuration="file:$LOG_FILE" -Dcom.mchange.v2.c3p0.cfg.xml="$C3P0_CONF_FILE" -Dhazelcast.configuration="file:$HZ_CONF_FILE" -Dwildfirechat.path="$WILDFIRECHAT_PATH" -cp "$WILDFIRECHAT_HOME/lib/*" cn.wildfirechat.server.Server