Examples with PrincetonReader com.graphhopper.reader.PrincetonReader used on opensource projects

Example 1 with PrincetonReader

use of com.graphhopper.reader.PrincetonReader in project graphhopper by graphhopper.

the class RoutingAlgorithmIT method testPerformance.

@Test
public void testPerformance() throws IOException {
    int N = 10;
    int noJvmWarming = N / 4;
    Random rand = new Random(0);
    final EncodingManager eManager = new EncodingManager("car");
    final GraphHopperStorage graph = new GraphBuilder(eManager).create();
    String bigFile = "10000EWD.txt.gz";
    new PrincetonReader(graph).setStream(new GZIPInputStream(PrincetonReader.class.getResourceAsStream(bigFile))).read();
    GraphHopper hopper = new GraphHopper() {

        {
            setCHEnabled(false);
            setEncodingManager(eManager);
            loadGraph(graph);
        }

        @Override
        protected LocationIndex createLocationIndex(Directory dir) {
            return new LocationIndexTree(graph, dir);
        }
    };
    Collection<AlgoHelperEntry> prepares = createAlgos(hopper, new HintsMap().setWeighting("shortest").setVehicle("car"), TraversalMode.NODE_BASED);
    for (AlgoHelperEntry entry : prepares) {
        StopWatch sw = new StopWatch();
        for (int i = 0; i < N; i++) {
            int node1 = Math.abs(rand.nextInt(graph.getNodes()));
            int node2 = Math.abs(rand.nextInt(graph.getNodes()));
            RoutingAlgorithm d = entry.createRoutingFactory().createAlgo(graph, entry.getAlgorithmOptions());
            if (i >= noJvmWarming)
                sw.start();
            Path p = d.calcPath(node1, node2);
            // avoid jvm optimization => call p.distance
            if (i >= noJvmWarming && p.getDistance() > -1)
                sw.stop();
        // System.out.println("#" + i + " " + name + ":" + sw.getSeconds() + " " + p.nodes());
        }
        float perRun = sw.stop().getSeconds() / ((float) (N - noJvmWarming));
        System.out.println("# " + getClass().getSimpleName() + " " + entry + ":" + sw.stop().getSeconds() + ", per run:" + perRun);
        assertTrue("speed to low!? " + perRun + " per run", perRun < 0.08);
    }
}