01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10: Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11: Suite 350, San Mateo, CA 94403, USA.
12:
13: db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14: WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: for more details.
17:
18: You should have received a copy of the GNU General Public License along
19: with this program; if not, write to the Free Software Foundation, Inc.,
20: 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21: package com.db4o.test.performance;
22:
23: import java.io.*;
24: import com.db4o.*;
25:
26: public class TransactionsPerSecond {
27:
28: public static void main(String[] args) {
29: new TransactionsPerSecond().run();
30: }
31:
32: public static class Item {
33: public int _int;
34:
35: public Item() {
36: }
37:
38: public Item(int int_) {
39: _int = int_;
40: }
41: }
42:
43: private static final String FILE = "tps.db4o";
44:
45: private static final long TOTAL_COUNT = 5000;
46:
47: public void run() {
48:
49: // This switch will make a big difference:
50: Db4o.configure().flushFileBuffers(false);
51:
52: new File(FILE).delete();
53:
54: ObjectContainer objectContainer = Db4o.openFile(FILE).ext();
55:
56: long start = System.currentTimeMillis();
57:
58: for (int i = 0; i < TOTAL_COUNT; i++) {
59: objectContainer.set(new Item(i));
60: objectContainer.commit();
61: }
62:
63: long stop = System.currentTimeMillis();
64: long duration = stop - start;
65: objectContainer.close();
66:
67: System.out.println("Time to store " + TOTAL_COUNT
68: + " objects: " + duration + "ms");
69:
70: double seconds = ((double) duration) / ((double) 1000);
71: double tps = TOTAL_COUNT / seconds;
72:
73: System.out.println("Transactions per second: " + tps);
74: }
75:
76: }
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