/*
* $Id: TestPerformance.java,v 1.4 2003/09/21 15:49:02 boisvert Exp $
*
* Package performance test
*
* Simple db toolkit
* Copyright (C) 1999, 2000 Cees de Groot <cg@cdegroot.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License
* as published by the Free Software Foundation; either version 2
* 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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
*/
package jdbm.recman;
import jdbm.RecordManager;
import jdbm.RecordManagerFactory;
import jdbm.RecordManagerOptions;
import junit.framework.*;
import java.util.Properties;
import java.util.Random;
/**
* This class contains performance tests for this package.
*/
public class TestPerformance extends TestCase {
public TestPerformance(String name) {
super(name);
}
public void setUp() {
TestRecordFile.deleteTestFile();
}
public void tearDown() {
//TestRecordFile.deleteTestFile();
}
// test parameter: maximum record size
final int MAXSIZE = 500; // is this a reasonable size for real-world apps?
// test parameter: number of records for fetch/update tests
final int RECORDS = 10000;
Random rnd = new Random(42);
/**
* Test insert performance
*/
public void testInserts() throws Exception {
RecordManager recman;
recman = RecordManagerFactory.createRecordManager( TestRecordFile.testFileName );
int inserts = 0;
long start = System.currentTimeMillis();
try {
long stop = 0;
while (true) {
recman.insert(TestUtil.makeRecord(rnd.nextInt(MAXSIZE),
(byte) rnd.nextInt()));
inserts++;
if ((inserts % 25) == 0) {
stop = System.currentTimeMillis();
if (stop - start >= 60000)
break;
}
}
recman.close();
System.out.println("Inserts: " + inserts + " in "
+ (stop - start) + " millisecs");
} catch (Throwable e) {
fail("unexpected exception after " + inserts + " inserts, "
+ (System.currentTimeMillis() - start) + "ms: " + e);
}
}
/**
* Create a database, return array of rowids.
*/
private long[] makeRows() throws Exception {
RecordManager recman;
Properties options;
options = new Properties();
options.setProperty( RecordManagerOptions.DISABLE_TRANSACTIONS, "true" );
recman = RecordManagerFactory.createRecordManager( TestRecordFile.testFileName,
options );
long[] retval = new long[RECORDS];
System.out.print("Creating test database");
long start = System.currentTimeMillis();
try {
for (int i = 0; i < RECORDS; i++) {
retval[i] = recman.insert(TestUtil
.makeRecord(rnd.nextInt(MAXSIZE),
(byte) rnd.nextInt()));
if ((i % 100) == 0)
System.out.print(".");
}
recman.close();
} catch (Throwable e) {
e.printStackTrace();
fail("unexpected exception during db creation: " + e);
}
System.out.println("done (" + RECORDS + " inserts in "
+ (System.currentTimeMillis() - start) + "ms).");
return retval;
}
/**
* Test fetches
*/
public void testFetches() throws Exception {
RecordManager recman;
long[] rowids = makeRows();
recman = RecordManagerFactory.createRecordManager( TestRecordFile.testFileName );
int fetches = 0;
long start = System.currentTimeMillis();
try {
long stop = 0;
while (true) {
recman.fetch( rowids[ rnd.nextInt( RECORDS ) ] );
fetches++;
if ((fetches % 25) == 0) {
stop = System.currentTimeMillis();
if (stop - start >= 60000)
break;
}
}
recman.close();
System.out.println("Fetches: " + fetches + " in "
+ (stop - start) + " millisecs");
} catch (Throwable e) {
fail("unexpected exception after " + fetches + " fetches, "
+ (System.currentTimeMillis() - start) + "ms: " + e);
}
}
/**
* Test updates.
*/
public void testUpdates() throws Exception {
RecordManager recman;
long[] rowids = makeRows();
recman = RecordManagerFactory.createRecordManager( TestRecordFile.testFileName );
int updates = 0;
long start = System.currentTimeMillis();
try {
long stop = 0;
while (true) {
recman.update(rowids[rnd.nextInt(RECORDS)],
TestUtil.makeRecord(rnd.nextInt(MAXSIZE),
(byte) rnd.nextInt()));
updates++;
if ((updates % 25) == 0) {
stop = System.currentTimeMillis();
if (stop - start >= 60000)
break;
}
}
recman.close();
System.out.println("Updates: " + updates + " in "
+ (stop - start) + " millisecs");
} catch (Throwable e) {
fail("unexpected exception after " + updates + " updates, "
+ (System.currentTimeMillis() - start) + "ms: " + e);
}
}
/**
* Test deletes.
*/
public void testDeletes() throws Exception {
RecordManager recman;
long[] rowids = makeRows();
recman = RecordManagerFactory.createRecordManager( TestRecordFile.testFileName );
int deletes = 0;
long start = System.currentTimeMillis();
try {
long stop = 0;
// This can be done better...
for (int i = 0; i < RECORDS; i++) {
recman.delete(rowids[i]);
deletes++;
if ((deletes % 25) == 0) {
stop = System.currentTimeMillis();
if (stop - start >= 60000)
break;
}
}
recman.close();
System.out.println("Deletes: " + deletes + " in "
+ (stop - start) + " millisecs");
} catch (Throwable e) {
e.printStackTrace();
fail("unexpected exception after " + deletes + " deletes, "
+ (System.currentTimeMillis() - start) + "ms: " + e);
}
}
/**
* Runs all tests in this class
*/
public static void main(String[] args) {
junit.textui.TestRunner.run(new TestSuite(TestPerformance.class));
// if you just want one test:
// TestSuite suite = new TestSuite();
// suite.addTest(new TestPerformance("testDeletes"));
// junit.textui.TestRunner.run(suite);
}
}