content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.cassandra.test.microbench.instance;
  
  
  import java.util.concurrent.TimeUnit;
  
  import org.openjdk.jmh.annotations.Benchmark;
  import org.openjdk.jmh.annotations.BenchmarkMode;
  import org.openjdk.jmh.annotations.Fork;
  import org.openjdk.jmh.annotations.Measurement;
  import org.openjdk.jmh.annotations.Mode;
  import org.openjdk.jmh.annotations.OutputTimeUnit;
  import org.openjdk.jmh.annotations.Scope;
  import org.openjdk.jmh.annotations.State;
  import org.openjdk.jmh.annotations.Threads;
  import org.openjdk.jmh.annotations.Warmup;
  
  @BenchmarkMode(Mode.AverageTime)
  @OutputTimeUnit(TimeUnit.MILLISECONDS)
  @Warmup(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
  @Measurement(iterations = 10, time = 1, timeUnit = TimeUnit.SECONDS)
  @Fork(value = 1)
  @Threads(1)
  @State(Scope.Benchmark)
  public class ReadSmallPartitionsBench extends ReadBenchBase
  {
      String readStatement()
      {
          return "SELECT * from "+table+" where userid=?";
      }
  
      @Override
      public Object[] writeArguments(long i)
      {
          return new Object[] { i, i, i };
      }
  
      @Benchmark
      public Object readRandomInside() throws Throwable
      {
          return performRead(readStatement(), () -> new Object[] { (long) rand.nextInt(count) });
      }
  
      @Benchmark
      public Object readRandomWOutside() throws Throwable
      {
          return performRead(readStatement(), () -> new Object[] { (long) rand.nextInt(count + count / 6) });
      }
  
      @Benchmark
      public Object readFixed() throws Throwable
      {
          return performRead(readStatement(), () -> new Object[] { 1234567890123L % count });
      }
  
      @Benchmark
      public Object readOutside() throws Throwable
      {
          return performRead(readStatement(), () -> new Object[] { count + 1234567L });
      }
  }
  