/* * Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software;Designed and Developed mainly by many Chinese * opensource volunteers. you can redistribute it and/or modify it under the * terms of the GNU General Public License version 2 only, as published by the * Free Software Foundation. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Any questions about this component can be directed to it's project Web address * https://code.google.com/p/opencloudb/. * */ package org.opencloudb.util; import org.opencloudb.util.StringUtil; /** * @author mycat */ public class StringHashPerfMain { public static void main(String[] args) { String s = "abcdejdsalfp"; int end = s.length(); for (int i = 0; i < 10; i++) { StringUtil.hash(s, 0, end); } long loop = 10000 * 10000; long t1 = System.currentTimeMillis(); t1 = System.currentTimeMillis(); for (long i = 0; i < loop; ++i) { StringUtil.hash(s, 0, end); } long t2 = System.currentTimeMillis(); System.out.println((((t2 - t1) * 1000 * 1000) / loop) + " ns."); } }