Java Jmap 内存查看分析
Linux 环境下：# jjade javah jcontrol jpeg2ktopamjsadebugd jv-convertjadetex javap jdb jpegicc jsattach jvisualvmjar javaws jhat jpegtopnm jscal jvmjarjarsigner jbibtex jinfo jpegtran jstack jv-scanjava jbigtopnm jmap jps jstat jwjavac jcf-dump jobs jrunscript jstatd jwhoisjavadoc jconsole join jsaccess jstest 产看java 进程获取pid root 后面的数字
# ps -ef|grep javaroot 994 13 Mar24 ? 00:39:12 /usr/local/jdk1.6/bin/java -server -Xms1024m -Xmx1024m -Xss512k -XX:PermSize=256m -XX:MaxPermSize=256m -XX:+UseParallelGC -XX:+DisableExplicitGC -XX:ParallelGCThreads=8 -Xloggc:../logs/gc20110324170001.log -Dcom.sun.management.jmxremote -Djava.endorsed.dirs=/usr/local/tomcat5/common/endorsed -classpath /usr/local/jdk1.6/lib/tools.jar:/usr/local/tomcat5/bin/bootstrap.jar:/usr/local/tomcat5/bin/commons-logging-api.jar -Dcatalina.base=/usr/local/tomcat5 -Dcatalina.home=/usr/local/tomcat5 -Djava.io.tmpdir=/usr/local/tomcat5/temp org.apache.catalina.startup.Bootstrap startroot 16659 145230 10:28 pts/4 00:00:00 grep java
生成文件
# jmap -dump:file=dump.txt 994Dumping heap to /root/dump.txt ...Heap dump file created 产看生成文件
# ls -l总计 998540drwxr-xr-x 2 root root 4096 03-17 15:15 Desktop-rw------- 1 root root 779368813 03-25 10:32 dump.txtdrwxr-xr-x 2 root root 4096 02-26 17:44 uploads
压缩文件
# tar -czvf dump.txt.tar.gz dump.txt dump.txt
页:
[1]