content: /*
   * Copyright (c) 2002, 2021, Oracle and/or its affiliates.
   *
   * This program is free software; you can redistribute it and/or modify it under
   * the terms of the GNU General Public License, version 2.0, as published by the
   * Free Software Foundation.
   *
   * This program is also distributed with certain software (including but not
   * limited to OpenSSL) that is licensed under separate terms, as designated in a
   * particular file or component or in included license documentation. The
   * authors of MySQL hereby grant you an additional permission to link the
   * program and your derivative works with the separately licensed software that
   * they have included with MySQL.
   *
   * Without limiting anything contained in the foregoing, this file, which is
   * part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
   * version 1.0, a copy of which can be found at
   * http://oss.oracle.com/licenses/universal-foss-exception.
   *
   * This program 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 2.0,
   * for more details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
   */
  
  package testsuite.perf;
  
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.Assumptions.assumeTrue;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import com.mysql.cj.MysqlConnection;
  
  import testsuite.BaseTestCase;
  
  /**
   * Simplistic test for performance regression.
   */
  public class RetrievalPerfTest extends BaseTestCase {
      private static final int NUM_TESTS = 10000;
  
      private static final int NUM_ROWS = 80;
  
      @BeforeEach
      public void setUp() throws Exception {
          createTable("retrievalPerfTestHeap", "(priKey INT NOT NULL PRIMARY KEY, charField VARCHAR(80)) ", "HEAP");
          createTable("retrievalPerfTestMyIsam", "(priKey INT NOT NULL PRIMARY KEY, charField VARCHAR(80)) ", "MyISAM");
  
          for (int i = 0; i < NUM_ROWS; i++) {
              this.stmt.executeUpdate(
                      "INSERT INTO retrievalPerfTestHeap (priKey, charField) VALUES (" + i + ",'abcdefghijklmnopqrstuvqxyzABCDEFGHIJKLMNOPQRSTUVWXYZ')");
              this.stmt.executeUpdate(
                      "INSERT INTO retrievalPerfTestMyIsam (priKey, charField) VALUES (" + i + ",'abcdefghijklmnopqrstuvqxyzABCDEFGHIJKLMNOPQRSTUVWXYZ')");
          }
      }
  
      /**
       * Tests retrieval from the query cache
       * 
       * @throws Exception
       */
      @Test
      public void testRetrievalCached() throws Exception {
          assumeTrue(((MysqlConnection) this.conn).getSession().getServerSession().isQueryCacheEnabled(),
                  "This test requires the server with enabled query cache.");
  
          this.stmt.executeUpdate("SET QUERY_CACHE_TYPE = DEMAND");
  
          double fullBegin = System.currentTimeMillis();
          double averageQueryTimeMs = 0;
          double averageTraversalTimeMs = 0;
  
          for (int i = 0; i < NUM_TESTS; i++) {
              long queryBegin = System.currentTimeMillis();
              this.rs = this.stmt.executeQuery("SELECT SQL_CACHE * FROM retrievalPerfTestHeap");
  
              long queryEnd = System.currentTimeMillis();
              averageQueryTimeMs += ((double) (queryEnd - queryBegin) / NUM_TESTS);
  
              long traverseBegin = System.currentTimeMillis();
  
              while (this.rs.next()) {
                  this.rs.getInt(1);
                  this.rs.getString(2);
              }
  
              long traverseEnd = System.currentTimeMillis();
              averageTraversalTimeMs += ((double) (traverseEnd - traverseBegin) / NUM_TESTS);
          }
  
          double fullEnd = System.currentTimeMillis();
          double fullTime = (fullEnd - fullBegin) / 1000;
          double queriesPerSec = NUM_TESTS / fullTime;
          double rowsPerSec = (NUM_ROWS * NUM_TESTS) / fullTime;
          System.out.println("\nQuery Cache From Heap Retrieval\n");
          System.out.println("Full test took: " + fullTime + " seconds.");
          System.out.println("Queries/second: " + queriesPerSec);
          System.out.println("Rows/second: " + rowsPerSec);
          System.out.println("Avg. Query Exec Time: " + averageQueryTimeMs + " ms");
          System.out.println("Avg. Traversal Time: " + averageTraversalTimeMs + " ms");
  
          // We're doing something wrong if we can't beat 45 seconds :(
          assertTrue(fullTime < 45);
      }
  
      /**
       * Tests retrieval from HEAP tables
       * 
       * @throws Exception
       */
      @Test
      public void testRetrievalHeap() throws Exception {
          double fullBegin = System.currentTimeMillis();
          double averageQueryTimeMs = 0;
          double averageTraversalTimeMs = 0;
  
          for (int i = 0; i < NUM_TESTS; i++) {
              long queryBegin = System.currentTimeMillis();
              this.rs = this.stmt.executeQuery("SELECT * FROM retrievalPerfTestHeap");
  
              long queryEnd = System.currentTimeMillis();
              averageQueryTimeMs += ((double) (queryEnd - queryBegin) / NUM_TESTS);
  
              long traverseBegin = System.currentTimeMillis();
  
              while (this.rs.next()) {
                  this.rs.getInt(1);
                  this.rs.getString(2);
              }
  
              long traverseEnd = System.currentTimeMillis();
              averageTraversalTimeMs += ((double) (traverseEnd - traverseBegin) / NUM_TESTS);
          }
  
          double fullEnd = System.currentTimeMillis();
          double fullTime = (fullEnd - fullBegin) / 1000;
          double queriesPerSec = NUM_TESTS / fullTime;
          double rowsPerSec = (NUM_ROWS * NUM_TESTS) / fullTime;
          System.out.println("\nHEAP Table Retrieval\n");
          System.out.println("Full test took: " + fullTime + " seconds.");
          System.out.println("Queries/second: " + queriesPerSec);
          System.out.println("Rows/second: " + rowsPerSec);
          System.out.println("Avg. Query Exec Time: " + averageQueryTimeMs + " ms");
          System.out.println("Avg. Traversal Time: " + averageTraversalTimeMs + " ms");
  
          // We're doing something wrong if we can't beat 45 seconds :(
          assertTrue(fullTime < 45);
      }
  
      /**
       * Tests retrieval speed from MyISAM type tables
       * 
       * @throws Exception
       */
      @Test
      public void testRetrievalMyIsam() throws Exception {
          double fullBegin = System.currentTimeMillis();
          double averageQueryTimeMs = 0;
          double averageTraversalTimeMs = 0;
  
          for (int i = 0; i < NUM_TESTS; i++) {
              long queryBegin = System.currentTimeMillis();
              this.rs = this.stmt.executeQuery("SELECT * FROM retrievalPerfTestMyIsam");
  
              long queryEnd = System.currentTimeMillis();
              averageQueryTimeMs += ((double) (queryEnd - queryBegin) / NUM_TESTS);
  
              long traverseBegin = System.currentTimeMillis();
  
              while (this.rs.next()) {
                  this.rs.getInt(1);
                  this.rs.getString(2);
              }
  
              long traverseEnd = System.currentTimeMillis();
              averageTraversalTimeMs += ((double) (traverseEnd - traverseBegin) / NUM_TESTS);
          }
  
          double fullEnd = System.currentTimeMillis();
          double fullTime = (fullEnd - fullBegin) / 1000;
          double queriesPerSec = NUM_TESTS / fullTime;
          double rowsPerSec = (NUM_ROWS * NUM_TESTS) / fullTime;
          System.out.println("\nMyIsam Retrieval\n");
          System.out.println("Full test took: " + fullTime + " seconds.");
          System.out.println("Queries/second: " + queriesPerSec);
          System.out.println("Rows/second: " + rowsPerSec);
          System.out.println("Avg. Query Exec Time: " + averageQueryTimeMs + " ms");
          System.out.println("Avg. Traversal Time: " + averageTraversalTimeMs + " ms");
  
          // We're doing something wrong if we can't beat 45 seconds :(
          assertTrue(fullTime < 45);
      }
  }
  