JProfiler：帮助在远程服务器ubuntu上集成janalyiler的分步指南

Question

我正在试着分析一个在ubuntu上运行tomcat7的远程服务器。我已经阅读了多个教程，但无法运行。

远程服务器上的JProfiler集成

首先，我下载了jprofiler9并在远程系统上提取。

wget http://download-keycdn.ej-technologies.com/jprofiler/jprofiler_linux_9_2.tar.gz
tar -xzf jprofiler_linux_9_2.tar.gz

并运行以下命令

jprofiler9/bin# ./jpintegrate

它问了我一些信息，生成了2个文件

1. startup-jp.sh我猜这个文件是从startup.sh创建的，因为上面的向导要求我提供启动脚本的路径（/usr/share/tomcat7/bin/startup.sh），所以在同一个文件夹中创建新文件。
2. config-jp.xml同一个向导让我输入配置文件的名称，并附有一些说明：可以在JProfiler GUI中导入以快速连接到应用服务器

更改的内容启动jp。sh如下

# The following lines have been added by the
# application server integration wizard of JProfiler

CATALINA_OPTS="-agentpath:/home/ubuntu/jprofiler9/bin/linux-x64/libjprofilerti.so=port=8383 $CATALINA_OPTS"
export CATALINA_OPTS

# end of modifications

exec "$PRGDIR"/"$EXECUTABLE" run "$@"

在这里，我对如何运行JProfiler感到困惑，我想是在运行初创公司jp。sh将启动探查器

它运行成功，但当我使用JProfiler GUI从本地系统连接到此远程服务器时，服务器出现了一些关于未找到路径的错误

这里是运行启动jp后的控制台日志。上海

root# /usr/share/tomcat7/bin/startup.sh
Using CATALINA_BASE:   /usr/share/tomcat7
Using CATALINA_HOME:   /usr/share/tomcat7
Using CATALINA_TMPDIR: /usr/share/tomcat7/temp
Using JRE_HOME:        /usr
Using CLASSPATH:       /usr/share/tomcat7/bin/bootstrap.jar:/usr/share/tomcat7/bin/tomcat-juli.jar
JProfiler> Protocol version 55
JProfiler> Using JVMTI
JProfiler> JVMTI version 1.1 detected.
JProfiler> 64-bit library
JProfiler> Listening on port: 8383.
JProfiler> Instrumenting native methods.
JProfiler> Can retransform classes.
JProfiler> Can retransform any class.
JProfiler> Native library initialized
JProfiler> VM initialized
JProfiler> Waiting for a connection from the JProfiler GUI ...
JProfiler> Using dynamic instrumentation
JProfiler> Time measurement: elapsed time
JProfiler> CPU profiling enabled
Oct 28, 2016 4:27:31 AM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat7/common/classes], exists: [false], isDirectory: [false], canRead: [false]
Oct 28, 2016 4:27:31 AM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat7/common], exists: [false], isDirectory: [false], canRead: [false]
Oct 28, 2016 4:27:32 AM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat7/server/classes], exists: [false], isDirectory: [false], canRead: [false]
Oct 28, 2016 4:27:32 AM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat7/server], exists: [false], isDirectory: [false], canRead: [false]
Oct 28, 2016 4:27:32 AM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat7/shared/classes], exists: [false], isDirectory: [false], canRead: [false]
Oct 28, 2016 4:27:32 AM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat7/shared], exists: [false], isDirectory: [false], canRead: [false]
Oct 28, 2016 4:27:32 AM org.apache.catalina.startup.Catalina initDirs
SEVERE: Cannot find specified temporary folder at /usr/share/tomcat7/temp
Oct 28, 2016 4:27:32 AM org.apache.catalina.startup.Catalina load
WARNING: Unable to load server configuration from [/usr/share/tomcat7/conf/server.xml]
Oct 28, 2016 4:27:32 AM org.apache.catalina.startup.Catalina initDirs
SEVERE: Cannot find specified temporary folder at /usr/share/tomcat7/temp
Oct 28, 2016 4:27:32 AM org.apache.catalina.startup.Catalina load
WARNING: Unable to load server configuration from [/usr/share/tomcat7/conf/server.xml]
Oct 28, 2016 4:27:32 AM org.apache.catalina.startup.Catalina start
SEVERE: Cannot start server. Server instance is not configured.
JProfiler> Keeping VM alive until frontend disconnects.

显然它无法查看不同的所需目录（奇怪），请注意我从未运行startup.sh启动我的tomcat7，而是使用service tomcat7 start，可能是这里的问题。这是我的tomcat7目录结构

/usr/share/tomcat7/

drwxr-xr-x   2 root root 4.0K Oct 28 04:21 bin
-rw-r--r--   1 root root   39 Feb 21  2014 defaults.md5sum
-rw-r--r--   1 root root 2.0K Feb 21  2014 defaults.template
drwxr-xr-x   2 root root 4.0K Oct 10 06:06 lib
-rw-r--r--   1 root root   53 Feb 21  2014 logrotate.md5sum
-rw-r--r--   1 root root  118 Feb 21  2014 logrotate.template

/var/lib/tomcat7/

drwxr-xr-x  3 tomcat7 tomcat7 4.0K Apr 21  2016 common
lrwxrwxrwx  1 root    root      12 Jun 19  2015 conf -> /etc/tomcat7
lrwxrwxrwx  1 root    root      17 Jun 19  2015 logs -> ../../log/tomcat7
drwxr-xr-x  3 tomcat7 tomcat7 4.0K Apr 21  2016 server
drwxr-xr-x  3 tomcat7 tomcat7 4.0K Apr 21  2016 shared
drwxrwxr-x  6 tomcat7 tomcat7 4.0K Oct 27 06:10 webapps
lrwxrwxrwx  1 root    root      19 Jun 19  2015 work -> ../../cache/tomcat7

通过在startup jp中添加以下行修复了上述异常。上海

export CATALINA_BASE="/var/lib/tomcat7/"

现在它可以找到丢失的文件夹

新问题

现在的问题是我的本地janalyiler gui花费了太多时间（就像如果我重新启动脚本，它会捕获很少的条目，但很快之后

top命令使tomcat的CPU使用率达到197.5%

因此本地janalyiler GUI不会加载任何其他内容。我无法确定是什么导致了如此多的CPU使用率。

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 5496 tomcat    38  18 3005m 675m  17m S 197.5  9.0  21:09.55 java

Answer 1

集成已正确完成，并按预期工作。

根据文件系统中的权限，必须执行startup jp。sh作为根，因此执行

sudo sh startup-jp.sh