Takes live histograms every $2 seconds of $1 process

histoDump.sh

#!/bin/bash
###
# Takes live histograms every $2 seconds of $1 process
###

## set your java home
#JAVA_HOME=/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Hom

if [[ ! -x "$JAVA_HOME/bin/jmap" ]]; then
  echo "Script not able to find JAVA_HOME/bin/jmap - Please set JAVA_HOME environment variable"
  exit -1
fi

## params
PID=$1
OUTPUT=histoDump-$PID.$(date +"%m%d%Y-%H%M%S").log

## INTERVAL
if [[ -z "$2" ]]; then
    INTERVAL=15
else
    INTERVAL=$2
fi

for i in {1..3}; do 
	NOW=`date`
	echo "Dump $i - $NOW"
	echo $NOW >> $OUTPUT
	$JAVA_HOME/bin/jmap -histo:live $PID >> $OUTPUT
	sleep $INTERVAL
done

echo "Done."