1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
* 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.tomcat.util.http;
import org.junit.Test;
/*
* This is an absolute performance test. There is no benefit it running it as part of a standard test run so it is
* excluded due to the name starting Tester...
*/
public class TesterFastHttpDateFormatPerformance {
@Test
public void testGetCurrentDateConcurrent() throws InterruptedException {
int threadCount = 8;
int callCount = 100000000;
Thread[] threads = new Thread[threadCount];
for (int i = 0; i < threadCount; i++) {
threads[i] = new GetCurrentDateThread(callCount);
}
long startTime = System.nanoTime();
for (int i = 0; i < threadCount; i++) {
threads[i].start();
}
for (int i = 0; i < threadCount; i++) {
threads[i].join();
}
long endTime = System.nanoTime();
System.out.println("Duration: " + (endTime - startTime));
}
private static class GetCurrentDateThread extends Thread {
private final int callCount;
GetCurrentDateThread(int callCount) {
this.callCount = callCount;
}
@Override
public void run() {
for (int i = 0; i < callCount; i++) {
FastHttpDateFormat.getCurrentDate();
}
}
}
}
|
