/*
* Copyright 2015 Ben Manes. All Rights Reserved.
*
* Licensed 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 com.github.benmanes.caffeine.cache;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Level;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.TearDown;
/**
* A benchmark that evaluates the eviction performance of a cache. The cache is pre-populated for
* a 100% eviction rate to mimic worst case behavior.
* <p>
* <pre>{@code
* ./gradlew jmh -PincludePattern=EvictionBenchmark
* }</pre>
*
* @author ben.manes@gmail.com (Ben Manes)
*/
@State(Scope.Benchmark)
public class EvictionBenchmark {
@Param({
"LinkedHashMap_Lru",
"Caffeine",
"Ehcache2_Lru",
"Ehcache3",
})
CacheType cacheType;
@Param({"0", "100", "10000", "1000000", "10000000"})
int size;
BasicCache<Integer, Boolean> cache;
@State(Scope.Thread)
public static class ThreadState {
int key = 0;
}
@Setup
public void setup() {
cache = cacheType.create(size);
for (int i = 0; i < size; i++) {
cache.put(Integer.MIN_VALUE + i, Boolean.TRUE);
}
}
@TearDown(Level.Iteration)
public void tearDown() {
cache.cleanUp();
}
@Benchmark
public void evict(ThreadState threadState) {
cache.put(threadState.key++, Boolean.TRUE);
}
}