##To Capture the 1 HeapDmp file with CPU usage on Tomcat & JBoss application.
Step 1: Create a file "heap_dump_script.sh" and add below script codes.
##Codes for heapdump generation.
***********************************************************
#!/bin/sh
JAVA_HOME=/u01/jdk1.8.0_121
# Number of times to collect data.
LOOP=1
# Interval in seconds between data points.
INTERVAL=1
for ((i=1; i <= $LOOP; i++))
do
_now=$(date)
echo "${_now}" >>high-cpu-Heap.out
top -b -n 1 -H -p $1 >>high-cpu-Heap.out
echo "${_now}" >>high-cpu-Heapdump.out
$JAVA_HOME/bin/jmap -dump:format=b,file=heapdump_`date +"%Y-%m-%d-%T"`.hprof $1
echo "heap dump captured #" $i
if [ $i -lt $LOOP ]; then
echo "Sleeping..."
sleep $INTERVAL
fi
done
Step 2: How to Run the "heap_dump_script.sh" script.
./heap_dump_script.sh JVM_PID
For HeapDump analysis , use Memory Analyzer (MAT) tool.
Download Address: https://www.eclipse.org/mat/downloads.php
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Thanks :-)
