/**
* Copyright (c) 2004-2011 QOS.ch
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
package org.slf4j.impl;
import org.junit.Ignore;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.helpers.BogoPerf;
@Ignore
public class PerfTest {
static long REFERENCE_BIPS = 9000;
@Test
public void issue63() {
int LEN = 1000 * 1000 * 10;
debugLoop(LEN); // warm up
double avg = debugLoop(LEN);
long referencePerf = 93;
BogoPerf.assertDuration(avg, referencePerf, REFERENCE_BIPS);
// when the code is guarded by a logger.isLoggable condition,
// duration is about 16 *micro*seconds for 1000 iterations
// when it is not guarded the figure is 90 milliseconds,
// i.e. a ration of 1 to 5000
}
double debugLoop(int len) {
Logger logger = LoggerFactory.getLogger(PerfTest.class);
long start = System.currentTimeMillis();
for (int i = 0; i < len; i++) {
logger.debug("hello");
}
long end = System.currentTimeMillis();
long duration = end - start;
return duration;
}
}