matriv

private class CustomBitSetList {

  final int bucket_size = 1024;
  int offset = -1;
  int currentBucketIdx = 0;

  ArrayList<FixedBitSet> buckets = new ArrayList<>(16);
  FixedBitSet currentBucket = new FixedBitSet(bucket_size);

  CustomBitSetList() {

matriv

Benchmark                                       Mode  Cnt    Score    Error  Units
MyBenchmark.testLuceneBitSetGrowByDoubleLarge  thrpt   10    5.098 ±  0.152  ops/s
MyBenchmark.testLuceneBitSetGrowByDoubleSmall  thrpt   10  521.420 ± 23.501  ops/s
MyBenchmark.testLuceneBitSetGrowByOneLarge     thrpt   10    3.763 ±  0.227  ops/s
MyBenchmark.testLuceneBitSetGrowByOneSmall     thrpt   10  407.312 ± 14.617  ops/s

matriv

Benchmark                                       Mode  Cnt     Score     Error  Units
MyBenchmark.testCustomBitSetSmall              thrpt   10   143.324 ±  24.399  ops/s
MyBenchmark.testCustomBitSetWrapperLarge       thrpt   10     0.251 ±   0.163  ops/s
MyBenchmark.testLuceneBitSetGrowByDoubleLarge  thrpt   10    51.219 ±   1.172  ops/s
MyBenchmark.testLuceneBitSetGrowByDoubleSmall  thrpt   10  5278.155 ± 204.776  ops/s
MyBenchmark.testLuceneBitSetGrowByOneLarge     thrpt   10    40.555 ±   1.277  ops/s
MyBenchmark.testLuceneBitSetGrowByOneSmall     thrpt   10  4125.909 ± 200.244  ops/s

matriv

package org.sample;

import org.apache.lucene.util.LongBitSet;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.logging.Loggers;
import org.openjdk.jmh.annotations.Benchmark;

import java.util.ArrayList;

public class MyBenchmark {

matriv

Result "testWithoutIf":
  905846726.800 ±(99.9%) 3858743.057 ops/s [Average]
  (min, avg, max) = (836690777.086, 905846726.800, 943887137.592), stdev = 16338159.725
  CI (99.9%): [901987983.743, 909705469.857] (assumes normal distribution)


# Run complete. Total time: 00:06:45

Benchmark                  Mode   Cnt          Score         Error  Units
MyBenchmark.testWithoutIf  thrpt  200  905846726.800 ± 3858743.057  ops/s

matriv

@Test
public void testLog() {
  Object[] array = new Object[] {1, 2};
  double avg = 0.0;
  for (int x = 0; x < 1000; x++) {
    long start = System.currentTimeMillis();
    for (int i = 0; i < 100_000_000; i++) {
      if (LOGGER.isDebugEnabled()) {
          LOGGER.debug("a {} string {}", array[0], array[1]);
      }