List of usage examples for java.lang Runtime maxMemory
public native long maxMemory();
From source file:osmcd.program.EnvironmentSetup.java
public static void checkMemory() { Runtime r = Runtime.getRuntime(); long maxHeap = r.maxMemory(); String heapMBFormatted = String.format(Locale.ENGLISH, "%3.2f MiB", maxHeap / 1048576d); log.info("Total available memory to OSMCB: " + heapMBFormatted); if (maxHeap < 200000000) { String msg = String.format(I18nUtils.localizedStringForKey("msg_environment_lack_memory"), heapMBFormatted);//from ww w.j a va2s. c o m JOptionPane.showMessageDialog(null, msg, I18nUtils.localizedStringForKey("msg_environment_lack_memory_title"), JOptionPane.WARNING_MESSAGE); } }
From source file:mobac.program.EnvironmentSetup.java
public static void checkMemory() { Runtime r = Runtime.getRuntime(); long maxHeap = r.maxMemory(); String heapMBFormatted = String.format(Locale.ENGLISH, "%3.2f MiB", maxHeap / 1048576d); log.info("Total available memory to MOBAC: " + heapMBFormatted); if (maxHeap < 200000000) { String msg = "<html><b>WARNING:</b> Mobile Atlas Creator has been started " + "with a very small amount of memory assigned.<br>" + "The current maximum usable amount of memory to Mobile Atlas Creator is <b>" + heapMBFormatted + "</b>.<br><br>Please make sure to start Mobile Atlas Creator in " + "the future via the provided start scripts <i>Mobile Atlas Creator.exe</i><br>" + "on Windows or <i>start.sh</i> on Linux/Unix/OSX or add the " + "parameter <b>-Xmx 512M</b> to your startup command.<br><br>" + "Example: <i>java -Xmx512M -jar Mobile_Atlas_Creator.jar</i><br>" + "<br><center>Press OK to continue and start Mobile Atlas Creator</center></html>"; JOptionPane.showMessageDialog(null, msg, "Warning: low memory", JOptionPane.WARNING_MESSAGE); }/*from w w w . ja va 2 s. co m*/ }
From source file:com.baasbox.service.storage.StatisticsService.java
public static ImmutableMap memory() { if (BaasBoxLogger.isTraceEnabled()) BaasBoxLogger.trace("Method Start"); ImmutableMap response = null;/* ww w .ja va 2 s . c o m*/ if (BBConfiguration.getStatisticsSystemMemory()) { Runtime rt = Runtime.getRuntime(); long maxMemory = rt.maxMemory(); long freeMemory = rt.freeMemory(); long totalMemory = rt.totalMemory(); response = ImmutableMap.of("max_allocable_memory", maxMemory, "current_allocate_memory", totalMemory, "used_memory_in_the_allocate_memory", totalMemory - freeMemory, "free_memory_in_the_allocated_memory", freeMemory); } else { response = ImmutableMap.of("max_allocable_memory", 0, "current_allocate_memory", 0, "used_memory_in_the_allocate_memory", 0, "free_memory_in_the_allocated_memory", 0); } if (BaasBoxLogger.isTraceEnabled()) BaasBoxLogger.trace("Method End"); return response; }
From source file:io.digibyte.tools.util.Utils.java
@SuppressWarnings("deprecation") public static void printPhoneSpecs() { String specsTag = "PHONE SPECS"; Log.e(specsTag, ""); Log.e(specsTag, "***************************PHONE SPECS***************************"); Log.e(specsTag, "* screen X: " + IntroActivity.screenParametersPoint.x + " , screen Y: " + IntroActivity.screenParametersPoint.y); Log.e(specsTag, "* Build.CPU_ABI: " + Build.CPU_ABI); Runtime rt = Runtime.getRuntime(); long maxMemory = rt.maxMemory(); Log.e(specsTag, "* maxMemory:" + Long.toString(maxMemory)); Log.e(specsTag, "----------------------------PHONE SPECS----------------------------"); Log.e(specsTag, ""); }
From source file:com.dajodi.scandic.Util.java
public static void printMemory() { Runtime runtime = Runtime.getRuntime(); long maxMemory = runtime.maxMemory(); long allocatedMemory = runtime.totalMemory(); long freeMemory = runtime.freeMemory(); long totalFreeMemory = (freeMemory + (maxMemory - allocatedMemory)) / 1024; Log.d("free memory: " + freeMemory / 1024); Log.d("allocated memory: " + allocatedMemory / 1024); Log.d("max memory: " + maxMemory / 1024); Log.d("total free memory: " + totalFreeMemory); }
From source file:com.baasbox.metrics.BaasBoxMetric.java
private static void setGauges() { //memory gauges registry.register(name(GAUGE_MEMORY_MAX_ALLOCABLE), new CachedGauge<Long>(10, TimeUnit.MINUTES) { @Override/* w w w . j a v a 2s .c om*/ public Long loadValue() { Runtime rt = Runtime.getRuntime(); long maxMemory = rt.maxMemory(); return maxMemory; } }); registry.register(name(GAUGE_MEMORY_CURRENT_ALLOCATE), new Gauge<Long>() { @Override public Long getValue() { Runtime rt = Runtime.getRuntime(); long totalMemory = rt.totalMemory(); return totalMemory; } }); registry.register(name(GAUGE_MEMORY_USED), new Gauge<Long>() { @Override public Long getValue() { Runtime rt = Runtime.getRuntime(); long freeMemory = rt.freeMemory(); long totalMemory = rt.totalMemory(); return totalMemory - freeMemory; } }); registry.register(name(GAUGE_FILESYSTEM_DATAFILE_SPACE_LEFT), new CachedGauge<Long>(CACHE_TIMEOUT, TimeUnit.MINUTES) { @Override public Long loadValue() { return new File(BBConfiguration.getDBDir()).getFreeSpace(); } }); registry.register(name(GAUGE_FILESYSTEM_BACKUPDIR_SPACE_LEFT), new CachedGauge<Long>(CACHE_TIMEOUT, TimeUnit.MINUTES) { @Override public Long loadValue() { return new File(BBConfiguration.getDBBackupDir()).getFreeSpace(); } }); registry.register(name(GAUGE_DB_DATA_SIZE), new CachedGauge<Long>(CACHE_TIMEOUT, TimeUnit.MINUTES) { @Override public Long loadValue() { boolean opened = false; try { if (DbHelper.getConnection() == null || DbHelper.getConnection().isClosed()) { DbHelper.open(BBConfiguration.getAPPCODE(), BBConfiguration.getBaasBoxAdminUsername(), BBConfiguration.getBaasBoxAdminUsername()); opened = true; } return DbHelper.getConnection().getSize(); } catch (InvalidAppCodeException e) { throw new RuntimeException(e); } finally { if (opened) DbHelper.close(DbHelper.getConnection()); } } }); registry.register(name(GAUGE_DB_DATA_DIRECTORY_SIZE), new CachedGauge<Long>(CACHE_TIMEOUT, TimeUnit.MINUTES) { @Override public Long loadValue() { return FileUtils.sizeOfDirectory(new File(BBConfiguration.getDBDir())); } }); registry.register(name(GAUGE_DB_MAX_SIZE_THRESHOLD), new CachedGauge<BigInteger>(CACHE_TIMEOUT, TimeUnit.MINUTES) { @Override public BigInteger loadValue() { return BBConfiguration.getDBSizeThreshold(); } }); }
From source file:com.nridge.core.base.std.Platform.java
/** * Create a log message containing JVM Heap Memory statistics. * <p>totalMemory(): Returns the total amount of memory in the * Java virtual machine. The value returned by this method may * vary over time, depending on the host environment. Note that * the amount of memory required to hold an object of any given * type may be implementation-dependent.</p> * <p>maxMemory(): Returns the maximum amount of memory that the * Java virtual machine will attempt to use. If there is no inherent * limit then the value Long.MAX_VALUE will be returned.</p> * <p>freeMemory(): Returns the amount of free memory in the Java * Virtual Machine. Calling the gc method may result in increasing * the value returned by freeMemory.</p> * <p>In reference to your question, maxMemory() returns the -Xmx value. * You may be wondering why there is a totalMemory() AND a maxMemory(). * The answer is that the JVM allocates memory lazily.</p> * * @param aTitle Title to save with log entry. * * @return Log message.// w ww. ja v a 2 s . c o m * * @see <a href="http://stackoverflow.com/questions/3571203/what-is-the-exact-meaning-of-runtime-getruntime-totalmemory-and-freememory">Runtime Memory</a> * @see <a href="http://www.mkyong.com/java/find-out-your-java-heap-memory-size/">Heap Memory</a> * @see <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Runtime.html">JavaDoc Runtime</a> */ public static String jvmLogMessage(String aTitle) { Runtime jvmRuntime = Runtime.getRuntime(); if (StringUtils.isEmpty(aTitle)) aTitle = "JVM"; long maxMemory = jvmRuntime.maxMemory(); long freeMemory = jvmRuntime.freeMemory(); long totalMemory = jvmRuntime.totalMemory(); long usedMemory = totalMemory - freeMemory; long availMemory = maxMemory - usedMemory; String logMsg = String.format("%s: Processors: %d, Mem Max: %s, Mem Total: %s, Mem Used: %s, Mem Avail: %s", aTitle, jvmRuntime.availableProcessors(), bytesToString(maxMemory), bytesToString(totalMemory), bytesToString(usedMemory), bytesToString(availMemory)); return logMsg; }
From source file:org.apache.flink.runtime.instance.HardwareDescriptionFactory.java
/** * Returns the size of free memory in bytes available to the JVM. * /*from w w w . j a v a 2s . co m*/ * @return the size of the free memory in bytes available to the JVM or <code>-1</code> if the size cannot be * determined */ private static long getSizeOfFreeMemory() { Runtime r = Runtime.getRuntime(); long available = r.maxMemory() - r.totalMemory() + r.freeMemory(); return available; }
From source file:net.nosleep.superanalyzer.util.Misc.java
public static void printMemoryInfo(String tag) { Runtime rt = Runtime.getRuntime(); long free = rt.freeMemory(); long total = rt.totalMemory(); long max = rt.maxMemory(); System.out.println("Memory (" + tag + "): " + free + "/" + total + " (max " + max + ")"); }
From source file:com.bstek.dorado.console.utils.SystemUtils.java
/** * ??/*from w w w . jav a2s.c o m*/ * * @return */ public static Map<String, Object> getMemoryInfo() { Map<String, Object> map = new HashMap<String, Object>(); Runtime runtime = Runtime.getRuntime(); map.put("runtime", runtime); map.put("freeMemory", runtime.freeMemory()); map.put("totalMemory", runtime.totalMemory()); if (System.getProperty("java.version").compareTo("1.4") >= 0) map.put("maxMemory", runtime.maxMemory()); else map.put("maxMemory", "N/A"); map.put("CPU", runtime.availableProcessors()); return map; }