public class InputGenerator {
  private static final String JAVADOC_PATH = "your_path_to_JDK/docs";
  public static final File FILE_PATH = new File( "your_output_file_path" );
 
  static
  {
    try {
      if ( !FILE_PATH.exists() )
        makeJavadocFile();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
 
  private static void makeJavadocFile() throws IOException {
    try( OutputStream os = new BufferedOutputStream( new FileOutputStream( FILE_PATH ), 65536 ) )
    {
      appendDir(os, new File( JAVADOC_PATH ));
    }
    System.out.println( "Javadoc file created" );
  }
 
  private static void appendDir( final OutputStream os, final File root ) throws IOException {
    for ( File f : root.listFiles() )
    {
      if ( f.isDirectory() )
        appendDir( os, f );
      else
        Files.copy(f.toPath(), os);
    }
  }
}

@OutputTimeUnit(TimeUnit.MILLISECONDS)
@State(Scope.Thread)
@Fork(1)
@Warmup(iterations = 2)
@Measurement(iterations = 3)
@BenchmarkMode(Mode.SingleShotTime)
public class TestParent {
  protected Path m_inputFile;
 
  @Setup
  public void setup()
  {
    m_inputFile = InputGenerator.FILE_PATH.toPath();
  }
 
  interface StreamFactory
  {
    public OutputStream getStream( final OutputStream underlyingStream ) throws IOException;
  }
 
  public int baseBenchmark( final StreamFactory factory ) throws IOException
  {
    try ( ByteArrayOutputStream bos = new ByteArrayOutputStream((int) m_inputFile.toFile().length());
       OutputStream os = factory.getStream( bos ) )
    {
      Files.copy(m_inputFile, os);
      os.flush();
      return bos.size();
    }
  }
}

public class JdkDeflateTest extends TestParent {
  @Param({"1", "2", "3", "4", "5", "6", "7", "8", "9"})
  public int m_lvl;
 
  @Benchmark
  public int deflate() throws IOException
  {
    return baseBenchmark(new StreamFactory() {
      @Override
      public OutputStream getStream(OutputStream underlyingStream) throws IOException {
        final Deflater deflater = new Deflater( m_lvl, true );
        return new DeflaterOutputStream( underlyingStream, deflater, 512 );
      }
    });
  }
}

||实现||文件大小（字节）|| ||GZIP||64，200，201|| ||Snappy (normal)||138,250,196|| ||Snappy (framed)|| 101,470,113|| ||LZ4 (fast)|| 98,316,501|| ||LZ4 (high) ||82,076,909|| ||Deflate (lvl=1) ||78,369,711|| ||Deflate (lvl=2) ||75,261,711|| ||Deflate (lvl=3) ||73,240,781|| ||Deflate (lvl=4) ||68,090,059|| ||Deflate (lvl=5) ||65,699,810|| ||Deflate (lvl=6) ||64,200,191|| ||Deflate (lvl=7) ||64,013,638|| ||Deflate (lvl=8) ||63,845,758|| ||Deflate (lvl=9) ||63,839,200||

||实现||压缩时间(ms)|| ||Snappy.framedOutput ||2264.700|| ||Snappy.normalOutput ||2201.120|| ||Lz4.testFastNative ||1056.326|| ||Lz4.testFastUnsafe ||1346.835|| ||Lz4.testFastSafe ||1917.929|| ||Lz4.testHighNative ||7489.958|| ||Lz4.testHighUnsafe ||10306.973|| ||Lz4.testHighSafe ||14413.622|| ||deflate (lvl=1) ||4522.644|| ||deflate (lvl=2) ||4726.477|| ||deflate (lvl=3) ||5081.934|| ||deflate (lvl=4) ||6739.450|| ||deflate (lvl=5) ||7896.572|| ||deflate (lvl=6) ||9783.701|| ||deflate (lvl=7) ||10731.761|| ||deflate (lvl=8) ||14760.361|| ||deflate (lvl=9) ||14878.364|| ||GZIP ||10351.887||

||实现||时间（ms）||未压缩文件大小||吞吐量（Mb/秒）||压缩后文件大小(Mb)|| ||Snappy.normalOutput ||2201.12 ||338 ||153.5581885586 ||131.8454742432|| ||Snappy.framedOutput ||2264.7 ||338 ||149.2471409017 ||96.7693328857|| ||Lz4.testFastNative ||1056.326 ||338 ||319.9769768045 ||93.7557220459|| ||Lz4.testFastSafe ||1917.929 ||338 ||176.2317583185 ||93.7557220459|| ||Lz4.testFastUnsafe ||1346.835 ||338 ||250.9587291688 ||93.7557220459|| ||Lz4.testHighNative ||7489.958 ||338 ||45.1270888301 ||78.2680511475|| ||Lz4.testHighSafe ||14413.622 ||338 ||23.4500391366 ||78.2680511475|| ||Lz4.testHighUnsafe ||10306.973 ||338 ||32.7933332124 ||78.2680511475|| ||deflate (lvl=1) ||4522.644 ||338 ||74.7350443679 ||74.7394561768|| ||deflate (lvl=2) ||4726.477 ||338 ||71.5120374012 ||71.7735290527|| ||deflate (lvl=3) ||5081.934 ||338 ||66.5101120951 ||69.8471069336|| ||deflate (lvl=4) ||6739.45 ||338 ||50.1524605124 ||64.9452209473|| ||deflate (lvl=5) ||7896.572 ||338 ||42.8033835442 ||62.6564025879|| ||deflate (lvl=6) ||9783.701 ||338 ||34.5472536415 ||61.2258911133|| ||deflate (lvl=7) ||10731.761 ||338 ||31.4952969974 ||61.0446929932|| ||deflate (lvl=8) ||14760.361 ||338 ||22.8991689295 ||60.8825683594|| ||deflate (lvl=9) ||14878.364 ||338 ||22.7175514727 ||60.8730316162|| ||GZIP ||10351.887 ||338 ||32.651051929 ||61.2258911133||