в 18:01, 31 мая 2010

2010-05-31T18:01:45Z

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== A basic performance test for a couple of common operations ==



<source lang="java">
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ----------------
* Performance.java
* ----------------
* (C) Copyright 2002-2004, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited).
* Contributor(s): -;
*
* $Id: Performance.java,v 1.10 2004/04/26 19:12:00 taqua Exp $
*
* Changes (since 11-Oct-2002)
* ---------------------------
* 11-Oct-2002 : Fixed errors reported by Checkstyle (DG);
*
*/
package org.jfree.chart.demo;
import java.awt.geom.Line2D;
import java.util.Date;
/**
* A basic performance test for a couple of common operations.
*
*/
public class Performance {
/** The value. */
private double value = 2.0;
/** The number. */
private Double number = new Double(this.value);
/**
* Default constructor.
*/
public Performance() {
super();
}
/**
* Creates lines in a loop.
*
* @param count the number of lines to create.
*/
public void createLines(final int count) {
Line2D line = new Line2D.Double();
for (int i = 0; i < count; i++) {
line = new Line2D.Double(1.0, 1.0, 1.0, 1.0);
}
System.out.println(line.toString());
}
/**
* Creates one line, then repeatedly calls the setLine method.
*
* @param count the number of times to call the setLine method.
*/
public void setLines(final int count) {
final Line2D line = new Line2D.Double(0.0, 0.0, 0.0, 0.0);
for (int i = 0; i < count; i++) {
line.setLine(1.0, 1.0, 1.0, 1.0);
}
}
/**
* Repeatedly grabs a value from a Number instance.
*
* @param count the number of times to call doubleValue().
*/
public void getNumber(final int count) {
double d = 0.0;
for (int i = 0; i < count; i++) {
d = this.number.doubleValue();
}
System.out.println(d);
}
/**
* Repeatedly grabs a value from a double.
*
* @param count the number of times to fetch the value.
*/
public void getValue(final int count) {
double d = 0.0;
for (int i = 0; i < count; i++) {
d = this.value;
}
System.out.println(d);
}
/**
* Writes the current time to the console.
*
* @param text the prefix.
* @param time the time.
*/
public void writeTime(final String text, final Date time) {
System.out.println(text + " : " + time.getTime());
}
/**
* Starting point for the application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final Performance p = new Performance();
System.out.println("Simple performance tests.");
final Date start1 = new Date();
p.createLines(100000);
final Date end1 = new Date();
final Date start2 = new Date();
p.setLines(100000);
final Date end2 = new Date();
p.writeTime("Start create lines", start1);
p.writeTime("Finish create lines", end1);
p.writeTime("Start set lines", start2);
p.writeTime("Finish set lines", end2);
final Date start3 = new Date();
p.getNumber(1000000);
final Date end3 = new Date();
final Date start4 = new Date();
p.getValue(1000000);
final Date end4 = new Date();
p.writeTime("Start get number", start3);
p.writeTime("Finish get number", end3);
p.writeTime("Start get value", start4);
p.writeTime("Finish get value", end4);

}
}

</source>



== A basic performance test for a couple of common operations 2 ==



<source lang="java">

/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -----------------
* Performance2.java
* -----------------
* (C) Copyright 2002-2004, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited).
* Contributor(s): -;
*
* $Id: Performance2.java,v 1.10 2004/04/26 19:12:00 taqua Exp $
*
* Changes (since 11-Oct-2002)
* ---------------------------
* 11-Oct-2002 : Fixed errors reported by Checkstyle (DG);
*
*/
package org.jfree.chart.demo;
import java.util.Date;
/**
* A basic performance test for a couple of common operations.
*
*/
public class Performance2 {
/** A double primitive. */
private double primitive = 42.0;
/** A number object. */
private Number object = new Double(42.0);
/**
* Default constructor.
*/
public Performance2() {
super();
}
/**
* Just use double value - should be fast.
*
* @return the double value.
*/
public double getPrimitive() {
return this.primitive;
}
/**
* Creates a Number object every time the primitive is accessed - should be really slow.
*
* @return creates and returns a Number object.
*/
public Number getPrimitiveAsObject() {
return new Double(this.primitive);
}
/**
* Returns the object - caller has to use doubleValue() method.
*
* @return an existing Number object.
*/
public Number getObject() {
return this.object;
}
/**
* Returns a double value generated from the Object - should be similar to previous method,
* but is not!
*
* @return the doubleValue() for the Number.
*/
public double getObjectAsPrimitive() {
return this.object.doubleValue();
}
/**
* Cycles through accessing the primitive.
*
* @param count the number of times to access.
*/
public void getPrimitiveLoop(final int count) {
double d = 0.0;
for (int i = 0; i < count; i++) {
d = getPrimitive();
}
System.out.println(d);
}
/**
* Cycles through accessing the primitive as an object.
*
* @param count the number of times to access.
*/
public void getPrimitiveAsObjectLoop(final int count) {
double d = 0.0;
for (int i = 0; i < count; i++) {
d = getPrimitiveAsObject().doubleValue();
}
System.out.println(d);
}
/**
* Cycles through accessing the object as a primitive.
*
* @param count the number of times to access.
*/
public void getObjectAsPrimitiveLoop(final int count) {
double d = 0.0;
for (int i = 0; i < count; i++) {
d = getObjectAsPrimitive();
}
System.out.println(d);
}
/**
* Cycles through accessing the object.
*
* @param count the number of times to access.
*/
public void getObjectLoop(final int count) {
double d = 0.0;
for (int i = 0; i < count; i++) {
d = getObject().doubleValue();
}
System.out.println(d);
}
/**
* Outputs the current status to the console.
*
* @param label the label.
* @param start the start time.
* @param end the end time.
*/
public void status(final String label, final Date start, final Date end) {
final long elapsed = end.getTime() - start.getTime();
System.out.println(label + start.getTime() + "-->" + end.getTime() + " = " + elapsed);
}
/**
* The starting point for the performance test.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final Performance2 performance = new Performance2();
final int count = 10000000;
for (int repeat = 0; repeat < 3; repeat++) { // repeat a few times just to make
// sure times are consistent
final Date s1 = new Date();
performance.getPrimitiveLoop(count);
final Date e1 = new Date();
performance.status("getPrimitive() : ", s1, e1);
final Date s2 = new Date();
performance.getPrimitiveAsObjectLoop(count);
final Date e2 = new Date();
performance.status("getPrimitiveAsObject() : ", s2, e2);
final Date s3 = new Date();
performance.getObjectLoop(count);
final Date e3 = new Date();
performance.status("getObject() : ", s3, e3);
final Date s4 = new Date();
performance.getObjectAsPrimitiveLoop(count);
final Date e4 = new Date();
performance.status("getObjectAsPrimitive() : ", s4, e4);
System.out.println("-------------------");
}
}
}

</source>



== Chart Timing 1 ==



<source lang="java">
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -----------------
* ChartTiming1.java
* -----------------
* (C) Copyright 2001-2004, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: ChartTiming1.java,v 1.12 2004/04/26 19:11:53 taqua Exp $
*
* Changes (from 24-Apr-2002)
* --------------------------
* 24-Apr-2002 : Added standard header (DG);
* 29-Oct-2002 : Modified to use javax.swing.Timer (DG);
*
*/
package org.jfree.chart.demo;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import javax.swing.Timer;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.data.general.DefaultPieDataset;
/**
* Draws a pie chart over and over for 10 seconds. Reports on how many redraws were achieved.
* <p>
* On my PC (SuSE Linux 8.2, JDK 1.4, 256mb RAM, 2.66ghz Pentium) I get 90-95 charts per second.
*
*/
public class ChartTiming1 implements ActionListener {
/** A flag that indicates when time is up. */
private boolean finished;
/**
* Creates a new application.
*/
public ChartTiming1() {
// nothing to do
}
/**
* Runs the timing.
*/
public void run() {
this.finished = false;
// create a dataset...
final DefaultPieDataset data = new DefaultPieDataset();
data.setValue("One", new Double(10.3));
data.setValue("Two", new Double(8.5));
data.setValue("Three", new Double(3.9));
data.setValue("Four", new Double(3.9));
data.setValue("Five", new Double(3.9));
data.setValue("Six", new Double(3.9));
// create a pie chart...
final boolean withLegend = true;
final JFreeChart chart = ChartFactory.createPieChart(
"Testing",
data,
withLegend,
true,
false
);
final BufferedImage image = new BufferedImage(400, 300, BufferedImage.TYPE_INT_RGB);
final Graphics2D g2 = image.createGraphics();
final Rectangle2D chartArea = new Rectangle2D.Double(0, 0, 400, 300);
// set up the timer...
final Timer timer = new Timer(10000, this);
timer.setRepeats(false);
int count = 0;
timer.start();
while (!this.finished) {
chart.draw(g2, chartArea, null, null);
System.out.println("Charts drawn..." + count);
if (!this.finished) {
count++;
}
}
System.out.println("DONE");
}
/**
* Receives notification of action events (in this case, from the Timer).
*
* @param event the event.
*/
public void actionPerformed(final ActionEvent event) {
this.finished = true;
}
/**
* Starting point for the application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final ChartTiming1 app = new ChartTiming1();
app.run();
}
}

</source>



== Chart Timing 3 ==



<source lang="java">
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -----------------
* ChartTiming3.java
* -----------------
* (C) Copyright 2002-2004, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: ChartTiming3.java,v 1.15 2004/04/26 19:11:53 taqua Exp $
*
* Changes
* -------
* 29-Oct-2002 : Version 1 (DG);
*
*/
package org.jfree.chart.demo;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import javax.swing.Timer;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYDotRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
/**
* Draws a scatter plot over and over for 10 seconds. Reports on how many redraws were achieved.
* <p>
* On my PC (SuSE Linux 8.2, JDK 1.4, 256mb RAM, 2.66ghz Pentium) I get 13-14 charts per second.
*
*/
public class ChartTiming3 implements ActionListener {
/** A flag that indicates when time is up. */
private boolean finished;
/**
* Creates a new application.
*/
public ChartTiming3() {
// nothing to do
}
/**
* Runs the test.
*/
public void run() {
this.finished = false;
// create a dataset...
final XYSeries series = new XYSeries("Random Data");
for (int i = 0; i < 1440; i++) {
final double x = Math.random();
final double y = Math.random();
series.add(x, y);
}
final XYDataset data = new XYSeriesCollection(series);
// create a scatter chart...
final boolean withLegend = true;
final JFreeChart chart = ChartFactory.createScatterPlot(
"Scatter plot timing", "X", "Y",
data,
PlotOrientation.VERTICAL,
withLegend,
false,
false
);
final XYPlot plot = chart.getXYPlot();
plot.setRenderer(new XYDotRenderer());
final BufferedImage image = new BufferedImage(400, 300, BufferedImage.TYPE_INT_RGB);
final Graphics2D g2 = image.createGraphics();
final Rectangle2D chartArea = new Rectangle2D.Double(0, 0, 400, 300);
// set up the timer...
final Timer timer = new Timer(10000, this);
timer.setRepeats(false);
int count = 0;
timer.start();
while (!this.finished) {
chart.draw(g2, chartArea, null, null);
System.out.println("Charts drawn..." + count);
if (!this.finished) {
count++;
}
}
System.out.println("DONE");
}
/**
* Receives notification of action events (in this case, from the Timer).
*
* @param event the event.
*/
public void actionPerformed(final ActionEvent event) {
this.finished = true;
}
/**
* Starting point for the application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final ChartTiming3 app = new ChartTiming3();
app.run();
}
}

</source>



== Chart Timing 4 ==



<source lang="java">
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -----------------
* ChartTiming4.java
* -----------------
* (C) Copyright 2002-2004, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: ChartTiming4.java,v 1.16 2004/04/26 19:11:53 taqua Exp $
*
* Changes
* -------
* 29-Oct-2002 : Version 1 (DG);
*
*/
package org.jfree.chart.demo;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import javax.swing.Timer;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.FastScatterPlot;
import org.jfree.chart.plot.Plot;
/**
* Draws a scatter plot over and over for 10 seconds. Reports on how many redraws were achieved.
* <p>
* On my PC (SuSE Linux 8.2, JDK 1.4, 256mb RAM, 2.66ghz Pentium) I get 31 charts per second.
*
*/
public class ChartTiming4 implements ActionListener {
/** A flag that indicates when time is up. */
private boolean finished;
/** Storage for the data. */
private float[][] data = new float[2][1440];
/**
* Creates a new application.
*/
public ChartTiming4() {
// nothing to do
}
/**
* Runs the test.
*/
public void run() {
this.finished = false;
// create a dataset...
populateData();
// create a fast scatter chart...
final Plot plot = new FastScatterPlot(this.data, new NumberAxis("X"), new NumberAxis("Y"));
final JFreeChart chart = new JFreeChart(
"Fast Scatter Plot Timing",
JFreeChart.DEFAULT_TITLE_FONT,
plot,
true
);
final BufferedImage image = new BufferedImage(400, 300, BufferedImage.TYPE_INT_RGB);
final Graphics2D g2 = image.createGraphics();
final Rectangle2D chartArea = new Rectangle2D.Double(0, 0, 400, 300);
// set up the timer...
final Timer timer = new Timer(10000, this);
timer.setRepeats(false);
int count = 0;
timer.start();
while (!this.finished) {
chart.draw(g2, chartArea, null, null);
System.out.println("Charts drawn..." + count);
if (!this.finished) {
count++;
}
}
System.out.println("DONE");
}
/**
* Receives notification of action events (in this case, from the Timer).
*
* @param event the event.
*/
public void actionPerformed(final ActionEvent event) {
this.finished = true;
}
/**
* Populates the data array with random values.
*/
private void populateData() {
for (int i = 0; i < this.data[0].length; i++) {
final float x = i;
this.data[0][i] = x;
this.data[1][i] = 100 + (2 * x) + (float) Math.random() * 1440;
}
}
/**
* Starting point for the application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final ChartTiming4 app = new ChartTiming4();
app.run();
}
}

</source>

Java/Chart/JFreeChart Performance - История изменений

Admin: 1 версия

в 18:01, 31 мая 2010

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