Commit | Line | Data |
---|---|---|
2b408e85 AM |
1 | /* |
2 | * Copyright (C) 2015, EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
da8308fe | 19 | package org.lttng.ust.agent.benchmarks.jul.handler; |
7ac7128a AM |
20 | |
21 | import java.util.LinkedList; | |
22 | import java.util.List; | |
23 | import java.util.logging.Handler; | |
24 | import java.util.logging.Level; | |
25 | import java.util.logging.Logger; | |
26 | ||
27 | import org.junit.After; | |
28 | import org.junit.Before; | |
29 | import org.junit.Test; | |
30 | ||
8a0613fa AM |
31 | /** |
32 | * Base abstract class for JUL benchmarks. Sub-classes can setup parameters to | |
33 | * test different types of log handlers. | |
34 | */ | |
d4e2e87c | 35 | public abstract class JulHandlerBenchmarkBase { |
7ac7128a AM |
36 | |
37 | // ------------------------------------------------------------------------ | |
38 | // Configurable test parameters | |
39 | // ------------------------------------------------------------------------ | |
40 | ||
41 | /** Nb of runs per test, result will be averaged */ | |
42 | private static final int NB_RUNS = 10; | |
43 | ||
44 | /** Trace/log events per run */ | |
45 | private static final int NB_ITER = 100000; | |
46 | ||
47 | /** Which tests to run (for different number of threads) */ | |
48 | private static final int[] NB_THREADS = {1, 1, 2, 3, 4, 5, 6, 7, 8}; | |
49 | ||
50 | // ------------------------------------------------------------------------ | |
51 | // Attributes | |
52 | // ------------------------------------------------------------------------ | |
53 | ||
86316987 | 54 | protected Logger logger; |
7ac7128a AM |
55 | protected Handler handler; |
56 | ||
57 | // ------------------------------------------------------------------------ | |
58 | // Maintenance methods | |
59 | // ------------------------------------------------------------------------ | |
60 | ||
8a0613fa AM |
61 | /** |
62 | * Base test setup | |
63 | */ | |
7ac7128a AM |
64 | @Before |
65 | public void setup() { | |
66 | /* Set up the logger */ | |
67 | logger = Logger.getLogger("Test logger"); | |
68 | logger.setUseParentHandlers(false); | |
69 | logger.setLevel(Level.ALL); | |
70 | ||
71 | /* Sub-classes' @Before will setup the Handler */ | |
72 | } | |
73 | ||
8a0613fa AM |
74 | /** |
75 | * Base test teardown | |
76 | */ | |
7ac7128a AM |
77 | @After |
78 | public void teardown() { | |
7ac7128a | 79 | if (handler != null) { |
86316987 | 80 | logger.removeHandler(handler); |
7ac7128a AM |
81 | handler.close(); |
82 | } | |
83 | handler = null; | |
84 | logger = null; | |
85 | } | |
86 | ||
87 | // ------------------------------------------------------------------------ | |
88 | // Test methods | |
89 | // ------------------------------------------------------------------------ | |
90 | ||
8a0613fa AM |
91 | /** |
92 | * Main test class for running the benchmark | |
93 | */ | |
7ac7128a AM |
94 | @Test |
95 | public void runBenchmark() { | |
96 | if (handler != null) { | |
97 | logger.addHandler(handler); | |
98 | } | |
99 | ||
100 | System.out.println(); | |
101 | System.out.println("Running benchmark: " + this.getClass().getCanonicalName()); | |
102 | for (int i : NB_THREADS) { | |
103 | runTest(logger, i); | |
104 | } | |
105 | } | |
106 | ||
107 | private static void runTest(Logger log, int nbThreads) { | |
108 | long start, end, average, total = 0; | |
109 | for (int i = 0; i < NB_RUNS; i++) { | |
110 | Runner runner = new Runner(nbThreads, NB_ITER, log); | |
111 | ||
112 | start = System.nanoTime(); | |
113 | runner.run(); | |
114 | end = System.nanoTime(); | |
115 | ||
116 | total += (end - start); | |
117 | } | |
118 | average = total / NB_RUNS; | |
119 | System.out.println(nbThreads + " threads, average = " + average / NB_ITER + " ns/event"); | |
120 | } | |
121 | ||
122 | // ------------------------------------------------------------------------ | |
123 | // Helper classes | |
124 | // ------------------------------------------------------------------------ | |
125 | ||
126 | private static class Runner implements Runnable { | |
127 | ||
128 | private final List<Worker> workers = new LinkedList<>(); | |
129 | private final List<Thread> workerThreads = new LinkedList<>(); | |
130 | ||
131 | public Runner(int nbThreads, int nbIter, Logger log) { | |
132 | ||
133 | for (int id = 0; id < nbThreads; id++) { | |
134 | Worker curWorker = new Worker(id, nbIter, log); | |
135 | workers.add(curWorker); | |
136 | workerThreads.add(new Thread(curWorker, "worker " + id)); | |
137 | } | |
138 | } | |
139 | ||
140 | @Override | |
141 | public void run() { | |
142 | for (Thread curThread : workerThreads) { | |
143 | curThread.start(); | |
144 | } | |
145 | ||
146 | for (Thread curThread : workerThreads) { | |
147 | try { | |
148 | curThread.join(); | |
149 | } catch (InterruptedException e) { | |
150 | e.printStackTrace(); | |
151 | } | |
152 | } | |
153 | } | |
154 | ||
155 | private static class Worker implements Runnable { | |
156 | ||
157 | private final Logger log; | |
158 | private final int threadId; | |
159 | private final int nbIter; | |
160 | ||
161 | public Worker(int threadId, int nbIter, Logger log) { | |
162 | this.log = log; | |
163 | this.threadId = threadId; | |
164 | this.nbIter = nbIter; | |
165 | } | |
166 | ||
167 | @Override | |
168 | public void run() { | |
169 | for (int i = 0; i < nbIter; i++) { | |
170 | log.info("Thread " + threadId + ", iteration " + i); | |
171 | } | |
172 | } | |
173 | ||
174 | } | |
175 | } | |
176 | } |