Gather JVM CPU usage metrics per thread

take_dumps.sh

#!/bin/sh

count=30
delay=1
pid=`jps -v | grep liferay | awk '{ print $1 }'`

if [ -n "${1}" ]; then
  pid=$1
fi

if [ -z "${pid}" ]; then
  echo "No Liferay process found"
  exit 1
fi

tmpdir="/tmp/${pid}.$(date +%Y%m%d.%H%M%S)"

mkdir -p $tmpdir

for i in `seq 1 $count`;
do
  timestamp=$(date +%Y%m%d.%H%M%S)

  dump_name="thread_dump_${pid}_${timestamp}.txt"
  metrics_name="thread_cpu_${pid}_${timestamp}.txt"

  jstack -l $pid > $tmpdir/$dump_name
  pidstat -t -p $pid | sort -nr -k8 | egrep -v "^Linux|UID.*TGID" | \
    awk '{ printf "%s 0x%x\n", $8, $4}' > $tmpdir/$metrics_name

  sleep $delay
done

packname="${tmpdir}.zip"

echo "Creating thread dump package: ${packname}"

zip --move -r $packname $tmpdir