两个shell脚本jvm

第一个 定时抓取服务器JVM相关信息
#! /bin/sh #get_current_time export JAVA_HOME=/opt/jdk1.6.0_10/export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$CLASSPATH date=`date "+%Y-%m-%d-%H:%M:%S"` Root="/data/dxm/" jmapends=$Root$date"_jmap.txt"jstackends=$Root$date"_jstack.txt" jstateends=$Root$date"_jstate.txt" #start to register the jmap message echo "start to register the jmap to "$jmapends jmap -histo:live `jps|grep Resin |awk 'NR==1'|awk '{print $1}'` > $jmapends sleep 2 #start to register the jtack message echo "start to register the jstack to "$jstackends jstack -l `jps|grep Resin |awk 'NR==1'|awk '{print $1}'` > $jstackends sleep 2 #start to register the jstate message echo "start to register the jstate message to "$jstateends jstat -gcutil -t -h20 `jps|grep Resin |awk 'NR==1'|awk '{print $1}'` 1000 20 > $jstateends
 
这个可以跑个定时器：
crontab -e
*/10 * * * * sh /timer/timer.sh  #每十分钟抓一次
 
第二个脚本：对上面的脚本改进一下，只有系统负载达到指定的值之后才打印JVM信息
Java代码
#! /bin/sh       function printJVMMessage() {     #get_current_time   export JAVA_HOME=/opt/jdk1.6.0_10/   export PATH=$JAVA_HOME/bin:$PATH   export CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$CLASSPATH     #only the system load greate than 1*8PU then start to print the gc details       date=`date "+%Y-%m-%d-%H:%M:%S"`     Root="/data/dxm/"      jmapends=$Root$date"_jmap.txt"  jstackends=$Root$date"_jstack.txt"  jstateends=$Root$date"_jstate.txt"      #start to register the jmap message   echo "start to register the jmap to "$jmapends   jmap -histo:live `jps|grep Resin |awk 'NR==1'|awk '{print $1}'` > $jmapends     sleep 2    #start to register the jtack message   echo "start to register the jstack to "$jstackends   jstack -l `jps|grep Resin |awk 'NR==1'|awk '{print $1}'` > $jstackends     sleep 2    #start to register the jstate message   echo "start to register the jstate message to "$jstateends   jstat -gcutil -t -h20 `jps|grep Resin |awk 'NR==1'|awk '{print $1}'`  1000 20 > $jstateends     }       #System Max Load Per CPU,when the SystemLoad reached the MAX_LOAD * CPU_NUMBER then start register the jvm message   MAX_LOAD=1    CPU_NUMBER=`cat /proc/cpuinfo | grep processor |wc -l`     <STRONG style="BACKGROUND-COLOR: #ffffff"><SPAN style="COLOR: #ff0000">TOTAL_LOAD_TO_WARN</SPAN></STRONG>=$(($MAX_LOAD*$CPU_NUMBER))   #TOTAL_LOAD_TO_WARN=1    CURRENT_SYSTEM_LOAD=`uptime | awk '{print $(NF-2)}' | sed 's/,//'`     Start_Time=`date "+%Y-%m-%d-%H:%M:%S"`     echo 'start to print the jvm message...currenttime is:'$Start_Time   echo 'current system load is'$CURRENT_SYSTEM_LOAD' and TOTAO_LOAD_TO_WARN is '$TOTAL_LOAD_TO_WARN     if [ $(echo "$CURRENT_SYSTEM_LOAD > $TOTAL_LOAD_TO_WARN"|bc) == 1 ]; then       echo 'printint the jvm message...'      printJVMMessage   fi     Finish_Time=`date "+%Y-%m-%d-%H:%M:%S"`   echo 'finish to print the jvm message...and current time is:'$Finish_Tim