@BenchmarkMethodChart doesn't work

[FredPJ]

Hi all.

I'm trying to use @BenchmarkMethodChart like this:

@AxisRange(min = 0, max = 1)
@BenchmarkMethodChart(filePrefix = "benchmark-barchart")
public class MyBenchmarkWithBarChartTest {
        @Rule
        public BenchmarkRule benchmarkRun = new BenchmarkRule();

        @BenchmarkOptions(benchmarkRounds = 10, warmupRounds = 5, callgc = false, clock = Clock.REAL_TIME, concurrency = 4)
        @Test
        public void hashMap() throws Exception {
             ...
       }

In the output I can see :
MyBenchmarkWithBarChartTest.hashMap: [measured 10 out of 15 rounds, threads: 4 (physical processors: 2)]
 round: 1.41 [+- 0.53], round.block: 0.00 [+- 0.00], round.gc: 0.00 [+- 0.00], GC.calls: 10, GC.time: 3.34, time.total: 6.19, time.warmup: 2.04, time.bench: 4.15

But there is no html page generated, can you tell me what could be the reason ?


Thanks

[Dawid Weiss]

You need to pass H2 (database) consumer to the BenchmarkRule. The
charts are generated by the H2 consumer only (because it has
persistent history of runs). Check out source code (tests); for
example:

static final File dbFile = new File(RepeatedTestSlave.class.getName());
static final File dbFileFull = new File(dbFile.getName() + ".h2.db");
static final File chartsDir = new File("tmp-subdir");

private static H2Consumer h2consumer;

@Rule
public TestRule benchmarkRun = new BenchmarkRule(h2consumer);

@BeforeClass
public static void checkFile() throws SQLException
{
Common.deleteDir(chartsDir);
chartsDir.mkdir();

h2consumer = new H2Consumer(dbFile, chartsDir, null);
}

Dawid

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[FredPJ]

Thanks that works fine now.

Fred.