AccessEdge.java
No OneTemporary
Actions

Size

1 KB

Subscribers

None

AccessEdge.java
View Options

	package org.softwareheritage.graph.benchmark;

	import com.martiansoftware.jsap.JSAPException;
	import it.unimi.dsi.big.webgraph.LazyLongIterator;
	import org.softwareheritage.graph.Graph;
	import org.softwareheritage.graph.benchmark.utils.Statistics;
	import org.softwareheritage.graph.benchmark.utils.Timing;

	import java.io.IOException;
	import java.util.ArrayList;

	/**
	* Benchmark to time edge access time.
	*
	* @author The Software Heritage developers
	*/

	public class AccessEdge {
	/**
	* Main entrypoint.
	*
	* @param args command line arguments
	*/
	public static void main(String[] args) throws IOException, JSAPException {
	Benchmark bench = new Benchmark();
	bench.parseCommandLineArgs(args);

	Graph graph = new Graph(bench.args.graphPath);

	long[] nodeIds = bench.args.random.generateNodeIds(graph, bench.args.nbNodes);

	ArrayList<Double> timings = new ArrayList<>();
	for (long nodeId : nodeIds) {
	long startTime = Timing.start();
	LazyLongIterator neighbors = graph.successors(nodeId);
	long firstNeighbor = neighbors.nextLong();
	double duration = Timing.stop(startTime);
	timings.add(duration);
	}

	System.out.println("Used " + bench.args.nbNodes + " random edges (results are in seconds):");
	Statistics stats = new Statistics(timings);
	stats.printAll();
	}
	}