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/*
* Copyright (C) 2007-2008, Robin Rosenberg <robin.rosenberg@dewire.com>
* Copyright (C) 2007, Shawn O. Pearce <spearce@spearce.org>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.lib;
import java.io.File;
import java.io.IOException;
import junit.textui.TestRunner;
public class T0005_ShallowSpeedTest extends SpeedTestBase {
protected void setUp() throws Exception {
prepare(new String[] { "git", "rev-list", "365bbe0d0caaf2ba74d56556827babf0bc66965d" });
}
public void testShallowHistoryScan() throws IOException {
long start = System.currentTimeMillis();
Repository db = new Repository(new File(kernelrepo));
Commit commit = db.mapCommit("365bbe0d0caaf2ba74d56556827babf0bc66965d");
int n = 1;
for (;;) {
ObjectId[] parents = commit.getParentIds();
if (parents.length == 0)
break;
ObjectId parentId = parents[0];
commit = db.mapCommit(parentId);
commit.getCommitId().name();
++n;
}
assertEquals(12275, n);
long stop = System.currentTimeMillis();
long time = stop - start;
System.out.println("native="+nativeTime);
System.out.println("jgit="+time);
// ~0.750s (hot cache), ok
/*
native=1795
jgit=722
*/
// native git seems to run SLOWER than jgit here, at roughly half the speed
// creating the git process is not the issue here, btw.
long factor10 = (nativeTime*150/time+50)/100;
assertEquals(3, factor10);
}
public static void main(String[] args) {
TestRunner.run(T0005_ShallowSpeedTest.class);
}
}
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