Linux中使用Shell脚本查看Java线程的CPU使用情况

ps -ef|grep java
tomcat     374   372  1 11:45 ?        00:02:30 jsvc.exec -java-home /usr/java/latest -user tomcat -pidfile /usr/local/tomcat7/logs/tomcat7.pid -outfile /usr/local/tomcat7/logs/catalina-daemon.out -errfile &1 -classpath /usr/local/tomcat7/bin/bootstrap.jar:/usr/local/tomcat7/bin/commons-daemon.jar:/usr/local/tomcat7/bin/tomcat-juli.jar -Djava.util.logging.config.file=/usr/local/tomcat7/conf/logging.properties -Djava.awt.headless=true -Xmx10240m -XX:MaxPermSize=2096m -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/tomcat7/endorsed -Dcatalina.base=/usr/local/tomcat7 -Dcatalina.home=/usr/local/tomcat7 -Djava.io.tmpdir=/usr/local/tomcat7/temp org.apache.catalina.startup.Bootstrap

#!/bin/sh

export LANG="zh_CN.UTF-8";
export LC_ALL="zh_CN.UTF-8";

LOG_FILE="/tmp/jkiller.log";
JSTACK_FILE="/tmp/jstack.log";

PID="$1";
shift;
i=0;
j="$1";
if [ -z "${j}" ]; then
    j=5;
fi

ps -mp ${PID} -o THREAD,tid,time | sort -rn > ${LOG_FILE};
jstack ${PID} > ${JSTACK_FILE};

for LINE in `cat ${LOG_FILE}|gawk -F '-' '{print $4}'|gawk -F ' ' '{print $1}'`
do
    i=$(($i+1));
    if (($i>$j)); then
        break;
    fi;
    XPID=`printf "%x\n" ${LINE}`;
    echo -ne "\033[32m";
    echo ${XPID};
    echo -e "\033[34m";
    grep -A 10 "0x${XPID}" ${JSTACK_FILE};
    echo -e "\e[0m";
done;

./jkiller.sh 374