HMhSRcfa

1package com.github.stokito.experiments;
2
3import static java.util.concurrent.TimeUnit.MILLISECONDS;
4import static org.openjdk.jmh.annotations.Mode.Throughput;
5import java.util.ArrayList;
6import java.util.Arrays;
7import java.util.Locale;
8import org.openjdk.jmh.annotations.Benchmark;
9import org.openjdk.jmh.annotations.BenchmarkMode;
10import org.openjdk.jmh.annotations.Level;
11import org.openjdk.jmh.annotations.OutputTimeUnit;
12import org.openjdk.jmh.annotations.Scope;
13import org.openjdk.jmh.annotations.Setup;
14import org.openjdk.jmh.annotations.State;
15import org.openjdk.jmh.infra.Blackhole;
16
17/*
18Benchmark                        Mode  Cnt    Score    Error   Units
19StreamSortBench.testCloneSort   thrpt    5  861.309 ± 71.133  ops/ms
20StreamSortBench.testStreamSort  thrpt    5  768.630 ± 29.832  ops/ms
21*/
22@State(Scope.Thread)
23public class StreamSortBench {
24  private static final String[] COLUMNS = {
25    "id",
26    "merchant_id",
27    "public_key",
28    "registration_date",
29    "reserve_fee",
30    "secret_key",
31    "status_acknowledged",
32    "marketplace_id",
33    "payout_interval_id",
34    "merchant_status",
35    "newsletter_subscribed",
36    "logo",
37    "firts_name",
38    "last_name",
39    "company_id",
40    "wallet_account_code",
41    "unavailable_message",
42    "wallet_kyc_check_status"
43  };
44
45  @Setup(Level.Trial)
46  public void setup() {
47
48  }
49
50  @Benchmark
51  @BenchmarkMode(Throughput)
52  @OutputTimeUnit(MILLISECONDS)
53  public void testStreamSort(Blackhole bh) {
54    StringBuilder sb = new StringBuilder(1024);
55    Arrays.stream(COLUMNS)
56      .sorted(String::compareTo)
57      .forEachOrdered(columnName -> sb.append( "column`" ).append( columnName ).append( '`' ));
58    bh.consume(sb.toString());
59  }
60
61  @Benchmark
62  @BenchmarkMode(Throughput)
63  @OutputTimeUnit(MILLISECONDS)
64  public void testCloneSort(Blackhole bh) {
65    StringBuilder sb = new StringBuilder(1024);
66    String[] alphabeticalColumns = COLUMNS.clone();
67    Arrays.sort( alphabeticalColumns, String::compareTo);
68    for ( String column : alphabeticalColumns ) {
69      String columnName = column;
70      sb.append( "column`" ).append( columnName ).append( '`' );
71    }
72    bh.consume(sb.toString());
73  }
74
75}