Average time computation just prints out "10??"

[David Karr]

On Mon, Oct 1, 2018 at 8:32 AM Aleksey Shipilev <shade at redhat.com> wrote:

> On 10/01/2018 05:27 PM, David Karr wrote:
> > That doesn't really seem like a clear answer, but in any case, I changed
> the class annotation,
> > adding a @Warmup annotation.  I let the run finish completely.  Every
> statistic was "s/op", and had
> > the encoded characters.
> >
> > If it matters, here's the entire skeleton of the class:
> >
> >     @Measurement(timeUnit = TimeUnit.MICROSECONDS)
> >     @Warmup(timeUnit = TimeUnit.MICROSECONDS)
> >     public class MyBenchmark {
> >         @Benchmark
> >         @BenchmarkMode(value = { Mode.AverageTime})
> >         public void createBigDecimalFromFormattedDouble() {
> >             ...
> >         }
> >
> >         @Benchmark
> >         @BenchmarkMode(value = { Mode.AverageTime})
> >         public void createBigDecimalFromDoubleWithScale() {
> >             ...
> >         }
> >     }
>
> Time units can also be overridden by command line option and/or Java API
> runner.
>
> Please show the complete example, together with the code that runs it?
>

There's hardly anything else here of note.  On the command line, I run "mvn
clean install" and then "java -jar target/benchmarks.jar".

I'm certain it doesn't matter, but here are the two method bodies:

        public void createBigDecimalFromFormattedDouble() {
            DecimalFormat df = new DecimalFormat("##0.00");
            new BigDecimal(df.format(47.0));
            new BigDecimal(df.format(324.6));
            new BigDecimal(df.format(4.3));
            new BigDecimal(df.format(123.93));
            new BigDecimal(df.format(997.01));
        }

        public void createBigDecimalFromDoubleWithScale() {
            DecimalFormat df = new DecimalFormat("##0.00");
            new BigDecimal(47.0).setScale(2, BigDecimal.ROUND_HALF_UP);
            new BigDecimal(324.6).setScale(2, BigDecimal.ROUND_HALF_UP);
            new BigDecimal(4.3).setScale(2, BigDecimal.ROUND_HALF_UP);
            new BigDecimal(123.93).setScale(2, BigDecimal.ROUND_HALF_UP);
            new BigDecimal(997.01).setScale(2, BigDecimal.ROUND_HALF_UP);
        }


> -Aleksey
>
>
>
>