Examples with TimerTask java.util.TimerTask used on opensource projects

Example 56 with TimerTask

use of java.util.TimerTask in project voltdb by VoltDB.

the class PositionsBenchmark method schedulePeriodicStats.

/**
     * Create a Timer task to display performance data on the Vote procedure
     * It calls printStatistics() every displayInterval seconds
     */
public void schedulePeriodicStats() {
    timer = new Timer();
    TimerTask statsPrinting = new TimerTask() {

        @Override
        public void run() {
            printStatistics();
        }
    };
    timer.scheduleAtFixedRate(statsPrinting, config.displayinterval * 1000, config.displayinterval * 1000);
}

Example 57 with TimerTask

use of java.util.TimerTask in project voltdb by VoltDB.

the class UniqueDevicesClient method schedulePeriodicStats.

/**
     * Create a Timer task to display performance data on the Vote procedure
     * It calls printStatistics() every displayInterval seconds
     */
public void schedulePeriodicStats() {
    timer = new Timer();
    TimerTask statsPrinting = new TimerTask() {

        @Override
        public void run() {
            printStatistics();
        }
    };
    timer.scheduleAtFixedRate(statsPrinting, config.displayinterval * 1000, config.displayinterval * 1000);
}

Example 58 with TimerTask

use of java.util.TimerTask in project voltdb by VoltDB.

the class AsyncBenchmark method schedulePeriodicStats.

/**
     * Create a Timer task to display performance data on the Vote procedure
     * It calls printStatistics() every displayInterval seconds
     */
public void schedulePeriodicStats() {
    timer = new Timer();
    TimerTask statsPrinting = new TimerTask() {

        @Override
        public void run() {
            printStatistics();
        }
    };
    timer.scheduleAtFixedRate(statsPrinting, config.displayinterval * 1000, config.displayinterval * 1000);
}

Example 59 with TimerTask

use of java.util.TimerTask in project voltdb by VoltDB.

the class JDBCBenchmark method main.

// Application entry point
public static void main(String[] args) {
    try {
        KVConfig config = new KVConfig();
        config.parse(JDBCBenchmark.class.getName(), args);
        System.out.println(config.getConfigDumpString());
        // ---------------------------------------------------------------------------------------------------------------------------------------------------
        // We need only do this once, to "hot cache" the JDBC driver reference so the JVM may realize it's there.
        Class.forName("org.voltdb.jdbc.Driver");
        // Prepare the JDBC URL for the VoltDB driver
        String url = "jdbc:voltdb://" + config.servers;
        // Get a client connection - we retry for a while in case the server hasn't started yet
        System.out.printf("Connecting to: %s\n", url);
        int sleep = 1000;
        while (true) {
            try {
                Con = DriverManager.getConnection(url, "", "");
                break;
            } catch (Exception e) {
                System.err.printf("Connection failed - retrying in %d second(s).\n", sleep / 1000);
                try {
                    Thread.sleep(sleep);
                } catch (Exception tie) {
                }
                if (sleep < 8000)
                    sleep += sleep;
            }
        }
        // Statistics manager objects from the connection, used to generate latency histogram
        ClientStatsContext fullStatsContext = ((IVoltDBConnection) Con).createStatsContext();
        periodicStatsContext = ((IVoltDBConnection) Con).createStatsContext();
        System.out.println("Connected.  Starting benchmark.");
        // Get a payload generator to create random Key-Value pairs to store in the database and process (uncompress) pairs retrieved from the database.
        final PayloadProcessor processor = new PayloadProcessor(config.keysize, config.minvaluesize, config.maxvaluesize, config.entropy, config.poolsize, config.usecompression);
        // Initialize the store
        if (config.preload) {
            System.out.print("Initializing data store... ");
            final PreparedStatement removeCS = Con.prepareStatement("DELETE FROM store;");
            final CallableStatement putCS = Con.prepareCall("{call STORE.upsert(?,?)}");
            for (int i = 0; i < config.poolsize; i++) {
                if (i == 0) {
                    removeCS.execute();
                }
                putCS.setString(1, String.format(processor.KeyFormat, i));
                putCS.setBytes(2, processor.generateForStore().getStoreValue());
                putCS.execute();
            }
            System.out.println(" Done.");
        }
        // start the stats
        fullStatsContext.fetchAndResetBaseline();
        periodicStatsContext.fetchAndResetBaseline();
        benchmarkStartTS = System.currentTimeMillis();
        // ---------------------------------------------------------------------------------------------------------------------------------------------------
        // Create a Timer task to display performance data on the operating procedures
        Timer timer = new Timer();
        TimerTask statsPrinting = new TimerTask() {

            @Override
            public void run() {
                printStatistics();
            }
        };
        timer.scheduleAtFixedRate(statsPrinting, config.displayinterval * 1000l, config.displayinterval * 1000l);
        // ---------------------------------------------------------------------------------------------------------------------------------------------------
        // Create multiple processing threads
        ArrayList<Thread> threads = new ArrayList<Thread>();
        for (int i = 0; i < config.threads; i++) threads.add(new Thread(new ClientThread(url, processor, config.duration, config.getputratio)));
        // Start threads
        for (Thread thread : threads) thread.start();
        // Wait for threads to complete
        for (Thread thread : threads) thread.join();
        // ---------------------------------------------------------------------------------------------------------------------------------------------------
        // We're done - stop the performance statistics display task
        timer.cancel();
        // ---------------------------------------------------------------------------------------------------------------------------------------------------
        // Now print application results:
        // stop and fetch the stats
        ClientStats stats = fullStatsContext.fetch().getStats();
        // 1. Store statistics as tracked by the application (ops counts, payload traffic)
        System.out.printf("\n-------------------------------------------------------------------------------------\n" + " Store Results\n" + "-------------------------------------------------------------------------------------\n\n" + "A total of %,d operations was posted...\n" + " - GETs: %,9d Operations (%,9d Misses/Failures)\n" + "         %,9d MB in compressed store data\n" + "         %,9d MB in uncompressed application data\n" + "         Network Throughput: %6.3f Gbps*\n\n" + " - PUTs: %,9d Operations (%,9d Failures)\n" + "         %,9d MB in compressed store data\n" + "         %,9d MB in uncompressed application data\n" + "         Network Throughput: %6.3f Gbps*\n\n" + " - Total Network Throughput: %6.3f Gbps*\n\n" + "* Figure includes key & value traffic but not database protocol overhead.\n" + "\n" + "-------------------------------------------------------------------------------------\n", GetStoreResults.get(0) + GetStoreResults.get(1) + PutStoreResults.get(0) + PutStoreResults.get(1), GetStoreResults.get(0), GetStoreResults.get(1), GetCompressionResults.get(0) / 1048576l, GetCompressionResults.get(1) / 1048576l, ((double) GetCompressionResults.get(0) + (GetStoreResults.get(0) + GetStoreResults.get(1)) * config.keysize) / (134217728d * config.duration), PutStoreResults.get(0), PutStoreResults.get(1), PutCompressionResults.get(0) / 1048576l, PutCompressionResults.get(1) / 1048576l, ((double) PutCompressionResults.get(0) + (PutStoreResults.get(0) + PutStoreResults.get(1)) * config.keysize) / (134217728d * config.duration), ((double) GetCompressionResults.get(0) + (GetStoreResults.get(0) + GetStoreResults.get(1)) * config.keysize) / (134217728d * config.duration) + ((double) PutCompressionResults.get(0) + (PutStoreResults.get(0) + PutStoreResults.get(1)) * config.keysize) / (134217728d * config.duration));
        System.out.println("\n\n-------------------------------------------------------------------------------------\n" + " Client Latency Statistics\n" + "-------------------------------------------------------------------------------------\n\n");
        System.out.printf("Average latency:               %,9.2f ms\n", stats.getAverageLatency());
        System.out.printf("10th percentile latency:       %,9.2f ms\n", stats.kPercentileLatencyAsDouble(.1));
        System.out.printf("25th percentile latency:       %,9.2f ms\n", stats.kPercentileLatencyAsDouble(.25));
        System.out.printf("50th percentile latency:       %,9.2f ms\n", stats.kPercentileLatencyAsDouble(.5));
        System.out.printf("75th percentile latency:       %,9.2f ms\n", stats.kPercentileLatencyAsDouble(.75));
        System.out.printf("90th percentile latency:       %,9.2f ms\n", stats.kPercentileLatencyAsDouble(.9));
        System.out.printf("95th percentile latency:       %,9.2f ms\n", stats.kPercentileLatencyAsDouble(.95));
        System.out.printf("99th percentile latency:       %,9.2f ms\n", stats.kPercentileLatencyAsDouble(.99));
        System.out.printf("99.5th percentile latency:     %,9.2f ms\n", stats.kPercentileLatencyAsDouble(.995));
        System.out.printf("99.9th percentile latency:     %,9.2f ms\n", stats.kPercentileLatencyAsDouble(.999));
        System.out.println("\n\n" + stats.latencyHistoReport());
        // Dump statistics to a CSV file
        Con.unwrap(IVoltDBConnection.class).saveStatistics(stats, config.statsfile);
        Con.close();
    // ---------------------------------------------------------------------------------------------------------------------------------------------------
    } catch (Exception x) {
        System.out.println("Exception: " + x);
        x.printStackTrace();
    }
}

Example 60 with TimerTask

use of java.util.TimerTask in project voltdb by VoltDB.

the class SyncBenchmark method schedulePeriodicStats.

/**
     * Create a Timer task to display performance data on the Vote procedure
     * It calls printStatistics() every displayInterval seconds
     */
public void schedulePeriodicStats() {
    timer = new Timer();
    TimerTask statsPrinting = new TimerTask() {

        @Override
        public void run() {
            printStatistics();
        }
    };
    timer.scheduleAtFixedRate(statsPrinting, config.displayinterval * 1000, config.displayinterval * 1000);
}