/*
* 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.logging.log4j.core.async.perftest;
import org.slf4j.LoggerFactory;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.core.spi.LifeCycle;
import com.lmax.disruptor.collections.Histogram;
public class RunLogback implements IPerfTestRunner {
@Override
public void runThroughputTest(final int lines, final Histogram histogram) {
final long s1 = System.nanoTime();
final Logger logger = (Logger) LoggerFactory.getLogger(getClass());
for (int j = 0; j < lines; j++) {
logger.info(THROUGHPUT_MSG);
}
final long s2 = System.nanoTime();
final long opsPerSec = (1000L * 1000L * 1000L * lines) / (s2 - s1);
histogram.addObservation(opsPerSec);
}
@Override
public void runLatencyTest(final int samples, final Histogram histogram,
final long nanoTimeCost, final int threadCount) {
final Logger logger = (Logger) LoggerFactory.getLogger(getClass());
for (int i = 0; i < samples; i++) {
final long s1 = System.nanoTime();
logger.info(LATENCY_MSG);
final long s2 = System.nanoTime();
final long value = s2 - s1 - nanoTimeCost;
if (value > 0) {
histogram.addObservation(value);
}
// wait 1 microsec
final long PAUSE_NANOS = 10000 * threadCount;
final long pauseStart = System.nanoTime();
while (PAUSE_NANOS > (System.nanoTime() - pauseStart)) {
// busy spin
}
}
}
@Override
public void shutdown() {
((LifeCycle) LoggerFactory.getILoggerFactory()).stop();
}
@Override
public void log(final String msg) {
final Logger logger = (Logger) LoggerFactory.getLogger(getClass());
logger.info(msg);
}
}