Complementary to fix proposed in PR #128 by @otteresk.pull/135/head
luccioman
7 years ago
parent
5d1ef8fdfc
commit
fe75f326d8
@ -0,0 +1,108 @@
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// ProfilingGraphTest.java
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// Copyright 2017 by luccioman; https://github.com/luccioman
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package net.yacy.peers.graphics;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.util.concurrent.TimeUnit;
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import net.yacy.cora.util.ConcurrentLog;
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import net.yacy.search.EventTracker;
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import net.yacy.visualization.RasterPlotter;
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/**
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* Unit tests for the {@link ProfilingGraph} class
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*/
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public class ProfilingGraphTest {
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/**
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* Generate a performance graph and write it to a temporary file for manual
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* viasual checking.<br/>
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* Note : it is not an automated JUnit test function as it is time dependant.
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*
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* @throws IOException
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* when a read/write exception occurred
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* @throws InterruptedException
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* when interrupted before termination
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*/
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public static void main(final String args[]) throws IOException, InterruptedException {
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long time = System.currentTimeMillis();
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final long beginTime = time;
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long prevTime = time;
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/* Feed the event tracker with test values */
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final int steps = 100;
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/* Ascending memory usage from 500MB to 16GB */
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long bytes = 500L * 1024L * 1024L;
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final long bytesStep = (16L * 1204L * 1204L * 1204L) / steps;
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/* Descending words, from max integer value to zero.
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* (events values are stored as long, but currently the actual maximum possible value ford WORDCACHE is an Integer.MAX_VALUE) */
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long words = Integer.MAX_VALUE;
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final long wordsStep = words / steps;
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for (int step = 0; step < steps; step++) {
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if ((step % 30) == 0) {
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/* Stable PPRM and peer ping values */
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EventTracker.update(EventTracker.EClass.PPM, Long.valueOf(500), false);
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EventTracker.update(EventTracker.EClass.PEERPING,
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new ProfilingGraph.EventPing("localPeerName", "aaaa", true, 1536), false);
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}
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EventTracker.update(EventTracker.EClass.WORDCACHE, Long.valueOf(words), false);
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EventTracker.update(EventTracker.EClass.MEMORY, Long.valueOf(bytes), false);
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time = System.currentTimeMillis();
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/* Ensure each test event is separated at least from 1ms */
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while (time == prevTime) {
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Thread.sleep(1);
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time = System.currentTimeMillis();
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}
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prevTime = time;
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bytes += bytesStep;
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words -= wordsStep;
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}
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long timeRange = (time - beginTime) * 2;
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/* Parameters likely to be encountered on the PerformanceGraph calling class */
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final int indexSizeCache = 865749;
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final int rwiCount = 512378;
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final int rwiBufferCount = 6754;
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final RasterPlotter graph = ProfilingGraph.performanceGraph(660, 240,
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indexSizeCache + " URLS / " + rwiCount + " WORDS IN INDEX / " + rwiBufferCount + " WORDS IN CACHE",
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(int) timeRange, TimeUnit.MILLISECONDS, true, true);
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/* Now write the result to a temporary file for visual checking */
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final File outputFile = new File(System.getProperty("java.io.tmpdir"), "testPerformanceGraph.png");
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try (
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/* Automatically closed by this try-with-resources statement */
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final FileOutputStream fos = new FileOutputStream(outputFile);) {
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fos.write(RasterPlotter.exportImage(graph.getImage(), "png").getBytes());
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System.out.println("Performance graph writtent to file " + outputFile);
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} finally {
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ConcurrentLog.shutdown();
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}
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}
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}
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