/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2013, QOS.ch. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation.
*/
package ch.qos.logback.classic;
import ch.qos.logback.classic.corpus.CorpusModel;
import ch.qos.logback.core.contention.*;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
import static org.junit.Assert.fail;
@org.junit.Ignore
public class LoggerContextPerfTest {
static int THREAD_COUNT = 10000;
int totalTestDuration = 4000;
LoggerContext loggerContext = new LoggerContext();
ThreadedThroughputCalculator harness = new ThreadedThroughputCalculator(totalTestDuration);
RunnableWithCounterAndDone[] runnableArray = buildRunnableArray();
CorpusModel corpusMaker;
@Before
public void setUp() throws Exception {
}
private RunnableWithCounterAndDone[] buildRunnableArray() {
RunnableWithCounterAndDone[] runnableArray = new RunnableWithCounterAndDone[THREAD_COUNT];
for(int i = 0; i < THREAD_COUNT; i++) {
runnableArray[i] = new GetLoggerRunnable();
}
return runnableArray;
}
// Results computed on a Intel i7
// 1 thread
// 13'107 ops per milli using Hashtable for LoggerContext.loggerCache
// 15'258 ops per milli using ConcurrentHashMap for LoggerContext.loggerCache
// 10 threads
// 8'468 ops per milli using Hashtable for LoggerContext.loggerCache
// 58'945 ops per milli using ConcurrentHashMap for LoggerContext.loggerCache
// 100 threads
// 8'863 ops per milli using Hashtable for LoggerContext.loggerCache
// 34'810 ops per milli using ConcurrentHashMap for LoggerContext.loggerCache
// 1'000 threads
// 8'188 ops per milli using Hashtable for LoggerContext.loggerCache
// 24'012 ops per milli using ConcurrentHashMap for LoggerContext.loggerCache
// 10'000 threads
// 7'595 ops per milli using Hashtable for LoggerContext.loggerCache
// 8'989 ops per milli using ConcurrentHashMap for LoggerContext.loggerCache
@Test
public void computeResults() throws InterruptedException {
harness.execute(runnableArray);
harness.printThroughput("getLogger performance: ", true);
}
private class GetLoggerRunnable extends RunnableWithCounterAndDone {
final int burstLength = 3;
public void run() {
while (!isDone()) {
long i = counter % burstLength;
loggerContext.getLogger("a"+i);
counter++;
if(i == 0) {
Thread.yield();
}
}
}
}
}