Version 3.0.1

README.md

@@ -104,7 +104,7 @@ JoularJX can be configured by modifying the ```config.properties``` files:
 - ```vm-power-format```: power format of the shared VM power file. We currently support two formats: ```watts``` (a file containing one float value which is the power consumption of the VM), and ```powerjoular``` (a csv file generated by [PowerJoular](https://github.com/joular/powerjoular) in the host, containing 3 columns: timestamp, CPU utilization of the VM and CPU power of the VM).
 
 You can install the jar package (and the PowerMonitor.exe on Windows) wherever you want, and call it in the ```javaagent``` with the full path.
-However, ```config.properties``` must be copied to the same folder as where you run the Java command.
+However, ```config.properties``` must either be copied to the same folder as where you run the Java command or its location must be set with the ```-Djoularjx.config=/path/to/config.properties``` property when running your program.
 
 In virtual machines, JoularJX requires two steps:
 - Installing a power monitoring tool in the host machine, which will monitor the virtual machine power consumption every second and writing it to a file (to be shared with the guest VM).

config.properties

@@ -77,7 +77,7 @@ powermonitor-path=C:\\joularjx\\PowerMonitor.exe
 
 # Monitoring inside virtual machines
 # Values: true, false
-vm-monitoring=true
+vm-monitoring=false
 
 # Path for power consumption of the virtual machine
 # Inside a virtual machine, indicate the file containing power consumption of the VM

pom.xml

@@ -18,7 +18,7 @@
 
     <groupId>org.noureddine</groupId>
     <artifactId>joularjx</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.1</version>
 
     <packaging>jar</packaging>
     <name>${project.artifactId}</name>
@@ -61,7 +61,7 @@
         <dependency>
             <groupId>com.github.marschall</groupId>
             <artifactId>memoryfilesystem</artifactId>
-            <version>2.8.0</version>
+            <version>2.8.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
@@ -71,7 +71,7 @@
             <dependency>
                 <groupId>org.junit</groupId>
                 <artifactId>junit-bom</artifactId>
-                <version>5.10.2</version>
+                <version>5.11.3</version>
                 <scope>import</scope>
                 <type>pom</type>
             </dependency>
@@ -110,7 +110,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>3.3.0</version>
+                <version>3.5.2</version>
             </plugin>
         </plugins>
     </build>

src/main/java/org/noureddine/joularjx/Agent.java

@@ -46,7 +46,7 @@ public static void premain(String args, Instrumentation inst) {
         JoularJXLogging.updateLevel(properties.getLoggerLevel());
 
         logger.info("+---------------------------------+");
-        logger.info("| JoularJX Agent Version 3.0.0    |");
+        logger.info("| JoularJX Agent Version 3.0.1    |");
         logger.info("+---------------------------------+");
 
         ThreadMXBean threadBean = createThreadBean();

src/main/java/org/noureddine/joularjx/cpu/RaplLinux.java

@@ -79,30 +79,51 @@ public void initialize() {
         final Path psysFile = fileSystem.getPath(RAPL_PSYS);
         final Path psysMaxFile = fileSystem.getPath(RAPL_PSYS_MAX);
         if (Files.exists(psysFile)) {
-            checkFileReadable(psysFile);
-            checkFileReadable(psysMaxFile);
             // psys exists, so use this for energy readings
-            raplFilesToRead.add(psysFile);
-            maxRaplFilesToRead.add(psysMaxFile);
+            if (Files.isReadable(psysFile)) {
+                raplFilesToRead.add(psysFile);
+                if (Files.isReadable(psysMaxFile)) {
+                    maxRaplFilesToRead.add(psysMaxFile);
+                } else {
+                    logger.log(Level.SEVERE, "Failed to get read" + psysMaxFile + " file. Exiting... Did you run JoularJX with elevated privileges (sudo)?");
+                    System.exit(1);
+                }
+            } else {
+                logger.log(Level.SEVERE, "Failed to get RAPL energy readings from" + psysFile + " file. Exiting... Did you run JoularJX with elevated privileges (sudo)?");
+                System.exit(1);
+            }
         } else {
             // No psys supported, then check for pkg and dram
             final Path pkgFile = fileSystem.getPath(RAPL_PKG);
             final Path pkgMaxFile = fileSystem.getPath(RAPL_PKG_MAX);
             if (Files.exists(pkgFile)) {
-                checkFileReadable(pkgFile);
-                checkFileReadable(pkgMaxFile);
-                // pkg exists, check also for dram
-                raplFilesToRead.add(pkgFile);
-                maxRaplFilesToRead.add(pkgMaxFile);
+                if (Files.isReadable(pkgFile)) {
+                    raplFilesToRead.add(pkgFile);
+                    if (Files.isReadable(pkgMaxFile)) {
+                        maxRaplFilesToRead.add(pkgMaxFile);
+                    } else {
+                        logger.log(Level.SEVERE, "Failed to get read" + pkgMaxFile + " file. Exiting... Did you run JoularJX with elevated privileges (sudo)?");
+                        System.exit(1);
+                    }
+                } else {
+                    logger.log(Level.SEVERE, "Failed to get RAPL energy readings from" + pkgFile + " file. Exiting... Did you run JoularJX with elevated privileges (sudo)?");
+                    System.exit(1);
+                }
 
                 final Path dramFile = fileSystem.getPath(RAPL_DRAM);
                 final Path dramMaxFile = fileSystem.getPath(RAPL_DRAM_MAX);
                 if (Files.exists(dramFile)) {
-                    checkFileReadable(dramFile);
-                    checkFileReadable(dramMaxFile);
-                    // dram and pkg exists, then get sum of both
-                    raplFilesToRead.add(dramFile);
-                    maxRaplFilesToRead.add(dramMaxFile);
+                    if (Files.isReadable(dramFile)) {
+                        raplFilesToRead.add(dramFile);
+                        if (Files.isReadable(dramMaxFile)) {
+                            maxRaplFilesToRead.add(dramMaxFile);
+                        } else {
+                            logger.log(Level.SEVERE, "Failed to get read" + dramMaxFile + " file. Exiting... Did you run JoularJX with elevated privileges (sudo)?");
+                            System.exit(1);
+                        }
+                    } else {
+                        logger.log(Level.WARNING, "Failed to get RAPL energy readings from" + dramFile + " file. Continuing without it.");
+                    }
                 }
             }
         }
@@ -113,18 +134,6 @@ public void initialize() {
         }
     }
 
-    /**
-     * Check that the passed file can be read by the program. Log error message and exit if reading the file is not
-     * possible.
-     * @param file the file to check the read access
-     */
-    private void checkFileReadable(final Path file) {
-        if (!Files.isReadable(file)) {
-            logger.log(Level.SEVERE, "Failed to get RAPL energy readings. Did you run JoularJX with elevated privileges (sudo)?");
-            System.exit(1);
-        }
-    }
-
     /**
      * Get energy readings from RAPL through powercap
      * Calculates the best energy reading as supported by CPU (psys, or pkg+dram, or pkg)

src/main/java/org/noureddine/joularjx/utils/AgentProperties.java

@@ -232,7 +232,7 @@ public int loadStackMonitoringSampleRate() {
     }
 
     private Optional<Path> getPropertiesPathIfExists(FileSystem fileSystem) {
-        Path path = fileSystem.getPath("config.properties");
+        Path path = fileSystem.getPath(System.getProperty("joularjx.config", "config.properties"));
 
         if (Files.notExists(path)) {
             logger.log(Level.INFO, "Could not locate config.properties, will use default values");