Example usage for java.lang Runtime totalMemory

Introduction

In this page you can find the example usage for java.lang Runtime totalMemory.

Prototype

public native long totalMemory();

Source Link

Document

Returns the total amount of memory in the Java virtual machine.

Usage

From source file:com.yobidrive.diskmap.buckets.BucketTableManager.java

public static void main(String[] args) {

    try {/*from   w  w  w.  j  a v a2  s.  c o m*/
        BucketTableManager nw = new BucketTableManager("/Users/Francois/Documents/NEEDLES/0.TestStore", 100,
                1000000, 3000L, true);

        nw.initialize();
        System.out.println(
                "Bucket table initialization: " + (nw.getCheckPoint().isEmpty() ? " Repair required" : " OK"));

        Runtime runtime = Runtime.getRuntime();
        long before = runtime.totalMemory() - runtime.freeMemory();

        nw.getCheckPoint().copyFrom(new NeedlePointer()); // reset checkpoint

        Date startDate = new Date();
        Date lapDate = new Date();
        System.out.println("Start test for " + TEST_COUNT + " pointers");
        long counter = 0;
        long lapCounter = 0;
        long offset = 0;
        BucketFNVHash hashFunc = new BucketFNVHash(1000000000L);
        while (counter < TEST_COUNT) {
            NeedlePointer needlePointer = new NeedlePointer();
            String key = "MYVERYNICEKEY" + counter;
            long bucket = hashFunc.hash(key);
            needlePointer.setNeedleFileNumber(4);
            needlePointer.setNeedleOffset(offset++);
            nw.writeNeedlePointer(bucket, needlePointer);
            counter++;
            Date lapDate2 = new Date();
            long spent = lapDate2.getTime() - lapDate.getTime();
            if (spent >= 1000 || (counter - lapCounter > TARGET_TPS)) { // Check each second or target tps
                if (spent < 1000) { // pause when tps reached
                    Thread.sleep(1000 - spent);
                    System.out.print(".");
                } else
                    System.out.print("*");
                lapDate = lapDate2; // Reset lap time
                lapCounter = counter; // Reset tps copunter
            }
        }
        long timeSpent = new Date().getTime() - startDate.getTime();
        System.out.println("\n\nWriting before cache commit of " + TEST_COUNT + " pointers \n"
                + "\tTotal time: " + timeSpent / 1000 + "s\n" + "\tThroughput: "
                + (TEST_COUNT / timeSpent * 1000) + " tps");

        timeSpent = new Date().getTime() - startDate.getTime();
        System.out.println("\n\nProcessed writing of " + TEST_COUNT + " pointers \n" + "\tTotal time: "
                + timeSpent / 1000 + "s\n" + "\tThroughput: " + (TEST_COUNT / timeSpent * 1000) + " tps");
        System.out.println("Max cycle time = " + (nw.getMaxCycleTimePass1() + nw.getMaxCycleTimePass2()));

    } catch (Throwable th) {
        th.printStackTrace();
    }

}

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From source file:gov.jgi.meta.hadoop.input.FastaBlockLineReader.java

public static void main(String[] args) {

    int num = 1;//from w w  w  .  j a va  2  s  .  c om
    int last = -1;

    do {
        try {
            FileInputStream fstream = new FileInputStream("/scratch/karan/30mb.fas");
            FastaBlockLineReader fblr = new FastaBlockLineReader(fstream);

            Text key = new Text();
            Map<String, String> setofreads = new HashMap<String, String>();
            Map<String, String> setofreadsTotal = new HashMap<String, String>();
            int length = (int) (Math.random() * 10000);
            length = 3000000;
            System.out.println("lenght = " + length);

            int total = 0;

            fblr.readLine(key, setofreads, Integer.MAX_VALUE, length);
            //            System.out.println("setofreads.size = " + setofreads.size());
            total += setofreads.size();
            //for (String s : setofreads.keySet()) {
            //                System.out.println(s);
            //            }
            Runtime r = Runtime.getRuntime();
            while (setofreads.size() > 0) {
                setofreadsTotal.putAll(setofreads);
                setofreads.clear();
                fblr.readLine(key, setofreads, Integer.MAX_VALUE, length);
                //              System.out.println("setofreads.size = " + setofreads.size());
                total += setofreads.size();

                r.gc();
            }
            System.out.println("total = " + total);
            System.out.println("heap size = " + r.totalMemory() / 1048576);

            if (last != -1) {
                if (last != total) {
                    System.out.println(
                            "error!!!, length = " + length + ": last = " + last + " current = " + total);
                }
            }
            last = total;

        } catch (Exception e) {
            System.out.println(e);
        }
    } while (num-- > 0);

}

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From source file:com.aestel.chemistry.openEye.fp.Fingerprinter.java

public static void main(String... args) throws IOException {
    long start = System.currentTimeMillis();
    long iCounter = 0;

    // create command line Options object
    Options options = new Options();
    Option opt = new Option("in", true, "input file [.ism,.sdf,...]");
    opt.setRequired(true);//from w ww . j av a  2 s.  c o  m
    options.addOption(opt);

    opt = new Option("out", true, "output file .tsv or oe-supported");
    opt.setRequired(true);
    options.addOption(opt);

    opt = new Option("idTag", true, "field with ID (default title)");
    opt.setRequired(false);
    options.addOption(opt);

    opt = new Option("fpType", true, "fingerPrintType: maccs|linear7|linear7*4|HashLinear7*4\n"
            + "   maccs: generate maccs keys\n"
            + "   linear7 generate 7 bonds long linear fingerprints (210k known rest hashed)\n"
            + "   linear7*4 linear 7 bonds if more than 4 atoms code atoms as * (5.1k known rest hashed)\n"
            + "   HashLinear7*4: as linear7*4 but hashed to 16k");
    opt.setRequired(true);
    options.addOption(opt);

    opt = new Option("format", true,
            "folded512|folded2048|bitList|fragList|none\n" + "   folded512/2048: hex encoded 512/2048 bits\n"
                    + "   bitList: list of bitpositions\n" + "   none: no fp output for use with writeCodeMap");
    opt.setRequired(true);
    options.addOption(opt);

    opt = new Option("writeCodeMap", false, "Overwrite the codeMap file at the end of processing");
    opt.setRequired(false);
    options.addOption(opt);

    CommandLineParser parser = new PosixParser();
    CommandLine cmd = null;
    try {
        cmd = parser.parse(options, args);
    } catch (Exception e) {
        System.err.println(e.getMessage());
        exitWithHelp(options);
    }
    args = cmd.getArgs();

    if (cmd.hasOption("d")) {
        System.err.println("Start debugger and press return:");
        new BufferedReader(new InputStreamReader(System.in)).readLine();
    }

    String idTag = null;
    if (cmd.hasOption("idTag"))
        idTag = cmd.getOptionValue("idTag");

    String outformat = cmd.getOptionValue("format").toLowerCase().intern();
    if (args.length != 0) {
        exitWithHelp(options);
    }

    String type = cmd.getOptionValue("fpType");
    boolean updateDictionaryFile = cmd.hasOption("writeCodeMap");
    boolean hashUnknownFrag = true;
    if (type.equals("HashLinear7*4"))
        hashUnknownFrag = false;
    if (type.equals("maccs"))
        hashUnknownFrag = false;
    if (updateDictionaryFile)
        hashUnknownFrag = false;
    Fingerprinter fprinter = createFingerprinter(type, updateDictionaryFile, hashUnknownFrag);
    OEMolBase mol = new OEGraphMol();

    String inFile = cmd.getOptionValue("in");
    String outFile = cmd.getOptionValue("out");
    oemolistream ifs = new oemolistream(inFile);

    Runtime rt = Runtime.getRuntime();
    Outputter out;
    if (outFile.endsWith(".txt") || outFile.endsWith(".tab"))
        out = new TabOutputter(fprinter.getMapper(), outFile, outformat);
    else
        out = new OEOutputter(fprinter.getMapper(), outFile, type, outformat);

    while (oechem.OEReadMolecule(ifs, mol)) {
        iCounter++;
        Fingerprint fp = fprinter.getFingerprint(mol);

        String id;
        if (idTag == null)
            id = mol.GetTitle();
        else
            id = oechem.OEGetSDData(mol, idTag);

        if (iCounter % 100 == 0)
            System.err.print(".");
        if (iCounter % 4000 == 0) {
            System.err.printf(" %d %dsec\tt=%d f=%d u=%d m=%d tf=%d\n", iCounter,
                    (System.currentTimeMillis() - start) / 1000, rt.totalMemory() / 1024,
                    rt.freeMemory() / 1024, (rt.totalMemory() - rt.freeMemory()) / 1024, rt.maxMemory() / 1024,
                    (rt.freeMemory() + (rt.maxMemory() - rt.totalMemory())) / 1024);
        }

        out.output(id, mol, fp);
    }

    System.err.printf("Fingerprinter: Read %d structures in %d sec\n", iCounter,
            (System.currentTimeMillis() - start) / 1000);

    if (updateDictionaryFile)
        fprinter.writeDictionary();
    out.close();
    fprinter.close();
}

---

From source file:com.yobidrive.diskmap.needles.NeedleManager.java

public static void main(String[] args) {

    try {/*www .j a  v  a 2  s .  c o  m*/
        BasicConfigurator.configure();
        NeedleManager nw = new NeedleManager("/Users/Francois/Documents/NEEDLES", 1000000000L, 8, 10000000L,
                10000000L, 0);
        nw.initialize();

        Runtime runtime = Runtime.getRuntime();
        long before = runtime.totalMemory() - runtime.freeMemory();

        // Measure cache impact
        for (long i = 0; i < TEST_COUNT; i++) {
            NeedlePointer np = new NeedlePointer();
            np.setNeedleOffset(i);
            Needle n = new Needle();
            n.setKey("kjdskljsdhklgjfdklgh");
            n.setData(new byte[10000]);
            nw.needleHeaderReadCache.put(np, n.getNeedleHeader(np));
        }
        runtime = Runtime.getRuntime();
        long after = runtime.totalMemory() - runtime.freeMemory();
        System.out.println(
                "Usage=" + ((after - before) / TEST_COUNT) + ", total= " + ((after - before) / (1024 * 1024)));

        /*
        long counter = 0 ;
        int initialLogNumber = nw.getLogNumber() ;
        Date startDate = new Date() ;
        System.out.println("Start test for "+TEST_COUNT+" needles with 10K bytes data") ;
        while ( counter < TEST_COUNT ) {
           Needle needle = new Needle() ;
           needle.setKey("KEY_"+counter) ;
           VectorClock vc = new VectorClock(new Date().getTime()) ;
           needle.setVersion(vc) ;
           needle.setData(testData) ;
           nw.writeNewNeedle(needle) ;
           counter++ ;
           if ( counter % 10000 == 0 )
              System.out.print(".") ;
        }
        long timeSpent = new Date().getTime() - startDate.getTime() ;
        System.out.println("\n\nProcessed creation of "+TEST_COUNT+" needles with 10K bytes data each\n"+
          "\tInital log number: "+initialLogNumber+"\n"+
          "\tFinal log number: "+nw.getLogNumber()+"\n"+
          "\tTotal time: "+timeSpent/1000+"s\n"+
          "\tThroughput: "+TEST_COUNT*testData.length/(timeSpent/1000)+" byte/s\n"+
          "\t            "+TEST_COUNT/(timeSpent/1000)+" needle/s") ;
        */
    } catch (Throwable th) {
        th.printStackTrace();
    }

}

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From source file:com.qwazr.utils.RuntimeUtils.java

public static long getMemoryUsage() {
    Runtime runtime = Runtime.getRuntime();
    return runtime.totalMemory() - runtime.freeMemory();
}

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From source file:Main.java

/**
 * Determine the amount of available memory. "Available" memory is calculated as
 * <code>(max - total) + free</code>.
 *
 * @return the number of bytes of memory available according to the above algorithm.
 *///www .j  av  a  2 s  .  c  o  m
public static long availableMemory() {
    Runtime rt = Runtime.getRuntime();
    return rt.maxMemory() - rt.totalMemory() + rt.freeMemory();
}

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From source file:Main.java

public static long availableMemory() {
    final Runtime runtime = Runtime.getRuntime();
    final long used = runtime.totalMemory() - runtime.freeMemory();

    final ActivityManager activityManager = (ActivityManager) sContext
            .getSystemService(Context.ACTIVITY_SERVICE);
    final long total = activityManager.getMemoryClass() * 1024 * 1024;

    return total - used;
}

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From source file:Mem.java

public static long used() {
    Runtime r = Runtime.getRuntime();
    return r.totalMemory() - r.freeMemory();
}

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From source file:MemoryUtils.java

static double usedMemory(Runtime runtime) {
    long totalMemory = runtime.totalMemory();
    long freeMemory = runtime.freeMemory();
    double usedMemory = (double) (totalMemory - freeMemory) / (double) (1024 * 1024);
    return usedMemory;
}

---

From source file:Main.java

public static long getUsedMemorySize() {

    long freeSize = 0L;
    long totalSize = 0L;
    long usedSize = -1L;
    try {/*from w w w .j a v  a2  s  .c om*/
        Runtime info = Runtime.getRuntime();
        freeSize = info.freeMemory();
        totalSize = info.totalMemory();
        usedSize = totalSize - freeSize;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return usedSize;

}

---

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