在脱机模式下使用带weblogic进程的Jprofiler控制器

我正在尝试使用控制器JavaAPI,基于 demos\api\samples\offline\ 例子。

Controller.saveSnapshot()

2. 我从中复制了config.xml文件 home 到工作目录。

3. server start 为我提供以下服务:

   -agentpath:/home/alex/jprofiler10/bin/linux-x64/libjprofilerti.so=offline,id=116,config=/workdir/config_bak.xml

4. 我创建了一个Java程序,该程序启动CPU评测,然后结束CPU评测,并尝试保存评测结果。

   Controller.startCPURecording(真);
   
   Controller.stopCPURecording();

   System.out.println(“保存快照:+fName”); Controller.saveSnapshot(新文件(fName));
   System.out.println(“保存的快照:+fName”);

程序执行时不会出错,但不会创建快照文件。

编辑:

在其他\子进程中运行时,不会创建该文件。

例如,我希望创建文件的以下代码并没有这样做。

分析过程:

import java.io.File;
import java.io.IOException;

import com.jprofiler.api.controller.Controller;

//turn on profiling and run a child process with offline profiling enabled in agentpath
public class PerfDemo {

    public static void main(String[] args) throws IOException {

        System.out.println("Started profiling");

        // On startup, JProfiler does not record any data. The various recording subsystems have to be
        // switched on programatically.
        Controller.startCPURecording(true);

        try {
            exec(CpuIntensiveProcess.class);

        } catch (Exception ex) {
            ex.printStackTrace();
            System.out.println("Exception: "+ex.getStackTrace());
        }

        // You can switch off recording at any point. Recording can be switched on again.
        Controller.stopCPURecording();
        saveSnapshot("snapshot.jps");              
    }

    private static void saveSnapshot(String fileName){
        System.out.println("saving snapshot: "+fileName);
        Controller.saveSnapshot(new File(fileName));        
    }

    //execute a new process with offline profiling enabled in agentpath
    public static int exec(Class klass) throws IOException, InterruptedException{

            String javaHome = System.getProperty("java.home");
            String javaBin = javaHome +
            File.separator + "bin" +
            File.separator + "java";
            String classpath = System.getProperty("java.class.path");
            String className = klass.getName();

            ProcessBuilder builder = new ProcessBuilder(
            javaBin, "-cp", classpath, "-agentpath:\"c:\\\\Progra~1\\\\jprofiler10\\\\bin\\\\windows-x64\\\\jprofilerti.dll\"=offline,id=110,config=config.xml", className );

            System.out.println("starting process");
            Process process = builder.inheritIO().start();
            process.waitFor();

            System.out.println("process finished");
            return process.exitValue(); 
    }
}

import static java.lang.Math.*;

import java.io.IOException;

public class CpuIntensiveProcess {

    public static void main(String[] args) throws IOException {
        for (int i=0;i<50000000;i++) {
            double d = tan(atan(tan(atan(tan(atan(tan(atan(tan(atan(123456789.123456789))))))))));
            double h =d+1;
        }        
    }   
}

@echo off

SET CLASSPATH=.;jprofiler-controller-10.1.4.jar;agent.jar;
"c:\Program Files\Java\jdk-10.0.1\bin\javac.exe" -cp %CLASSPATH% *.java
java -cp %CLASSPATH% PerfDemo

REM If I run in this configuration, the profiling is of the PerfDemo process and not of the CpuIntensiveProcess process
REM SET AGENTPATH=-agentpath:"c:\\Progra~1\\jprofiler10\\bin\\windows-x64\\jprofilerti.dll"=offline,id=110,config=config.xml
REM java -cp %CLASSPATH%  %AGENTPATH% PerfDemo

set "CURR_DIR=%cd%"
pushd "c:\Program Files\jprofiler10\bin"
jpexport %CURR_DIR%/snapshot.jps -outputdir=%CURR_DIR% HotSpots out.csv
popd

type out.csv

当我运行 PerfDemo 使用agentpath处理时,会创建jps文件,但分析是同一个进程的,而不是另一个进程的。

输出:

C:\dev\docs\bak\sample_other_process_profiling>profile.bat
Started profiling
Starting child process...
JProfiler> Protocol version 59
JProfiler> Java 9+ detected.
JProfiler> JVMTI version 1.1 detected.
JProfiler> Offline profiling mode.
JProfiler> 64-bit library
JProfiler> Using config file config.xml (id: 110)
JProfiler> Listening on port: 8849.
JProfiler> Enabling native methods instrumentation.
JProfiler> Can retransform classes.
JProfiler> Can retransform any class.
JProfiler> Native library initialized
JProfiler> VM initialized
JProfiler> Retransforming 7 base class files.
JProfiler> Base classes instrumented.
JProfiler> Using instrumentation
JProfiler> Time measurement: elapsed time
JProfiler> CPU profiling enabled
Child process finished
Saving snapshot: snapshot.jps
Controller.saveSnapshot finished, snapshot should exist on the disk: snapshot.jps
The snapshot file C:\dev\docs\bak\sample_other_process_profiling\snapshot.jps does not exist.
The system cannot find the file specified.