pseudo_java_profiler.sh

#!/bin/bash

if [ "$#" -ne 1 ]; then
    echo "Usage: $0 jps-filter-grep-expr"
    exit 1
fi

jps_filter=$1

# extract the PID of the java process
java_app_pid=$(jps -lvm | grep ${jps_filter} | awk '{print $1}')

# get 10 top consuming threads
top_consuming_threads=$(top -n1 -H -p ${java_app_pid} | \
	egrep java | egrep -o '^[^0-9]*[0-9]+ ' | \
	sed -r 's/[^0-9]+//g' | head)

temp_file=$(mktemp)

# create jstack_output
jstack ${java_app_pid} > ${temp_file}

# print for every thread the current stack trace
for thread in ${top_consuming_threads}; do
        echo "Stack trace for Thread '${thread}':"
        printf -v thread_hex "%x" $thread
        grep -A10 "nid=0x${thread_hex}" ${temp_file}
        echo
done;

rm ${temp_file}