Examples with Histogram org.HdrHistogram.Histogram used on opensource projects

Example 31 with Histogram

use of org.HdrHistogram.Histogram in project fast-cast by RuedigerMoeller.

the class AsyncLatPublisher method initFastCast.

public void initFastCast() throws Exception {
    fastCast = FastCast.getFastCast();
    fastCast.setNodeId("PUB");
    fastCast.loadConfig(CFG_FILE_PATH);
    pub = new ObjectPublisher(fastCast.onTransport("default").publish("stream"), AsyncLatMessage.class);
    fastCast.onTransport("back").subscribe("back", new ObjectSubscriber(false, AsyncLatMessage.class) {

        @Override
        protected void objectReceived(String s, long l, Object o) {
            if ("END".equals(o)) {
                final Histogram oldHi = hi;
                hi = new Histogram(TimeUnit.SECONDS.toNanos(2), 3);
                // no lambdas to stay 1.7 compatible
                // move printing out of the receiving thread
                dumper.execute(new Runnable() {

                    @Override
                    public void run() {
                        oldHi.outputPercentileDistribution(System.out, 1000.0);
                    }
                });
                //                        hi.reset();
                return;
            }
            final long value = System.nanoTime() - ((AsyncLatMessage) o).getSendTimeStampNanos();
            if (value < 1_000_000_000)
                hi.recordValue(value);
        }

        @Override
        public boolean dropped() {
            System.exit(-2);
            return false;
        }
    });
}

Example 32 with Histogram

use of org.HdrHistogram.Histogram in project fast-cast by RuedigerMoeller.

the class AsyncPubStruct method initFastCast.

public void initFastCast() throws Exception {
    fastCast = FastCast.getFastCast();
    fastCast.setNodeId("PUB");
    fastCast.loadConfig(CFG_FILE_PATH);
    pub = fastCast.onTransport("default").publish("stream");
    // pointer to message
    final FSTStruct msg = FSTStructFactory.getInstance().createEmptyStructPointer(FSTStruct.class);
    fastCast.onTransport("back").subscribe("back", new FCSubscriber() {

        @Override
        public void messageReceived(String sender, long sequence, Bytez b, long off, int len) {
            // as structs decode literally in zero time, we can decode inside receiver thread
            msg.baseOn(b, (int) off);
            Class type = msg.getPointedClass();
            if (type == StructString.class) {
                // sequence end, print histogram
                final Histogram oldHi = hi;
                hi = new Histogram(TimeUnit.SECONDS.toNanos(2), 3);
                // no lambdas to stay 1.7 compatible
                // move printing out of the receiving thread
                dumper.execute(new Runnable() {

                    @Override
                    public void run() {
                        oldHi.outputPercentileDistribution(System.out, 1000.0);
                    }
                });
            } else {
                // a regular message, record latency
                AsyncLatMessageStruct mdata = msg.cast();
                long value = System.nanoTime() - mdata.getSendTimeStampNanos();
                if (value < 1_000_000_000) {
                    // avoid AIOB during init + JITTING
                    hi.recordValue(value);
                }
            // a real app would need to copy the message (recycle byte arrays/objects !) and
            // run msg processing in an executor to get out of the receiving thread.
            // mdata gets invalid on finish of this method
            }
        }

        @Override
        public boolean dropped() {
            System.out.println("DROPPED");
            System.exit(-1);
            return false;
        }

        @Override
        public void senderTerminated(String senderNodeId) {
        }

        @Override
        public void senderBootstrapped(String receivesFrom, long seqNo) {
        }
    });
}