C3p0,DBCP和Druid的全表查询的性能比较

2018-12-27


三者对全表扫描的查询操作,在单线程下与多线程下的效率比较.总数据量约在4万

maven的pom.xml
        <dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.2.39</version>
		</dependency>
		<dependency>
			<groupId>c3p0</groupId>
			<artifactId>c3p0</artifactId>
			<version>0.9.1.2</version>
		</dependency>
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.1.4</version>
		</dependency>
		<dependency>
			<groupId>org.apache.tomcat</groupId>
			<artifactId>tomcat-jdbc</artifactId>
			<version>7.0.82</version>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.33</version>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-dbcp2</artifactId>
			<version>2.1.1</version>
		</dependency>
************************单线程操作************************
一:
package com.data;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class TestDao {
	 private final static String queryList = "select * from User_appuser_login";
	 
	 /**
	  * JDBC统一的查询方法
	  * @param conn
	  */
	 public void query(Connection conn){
	  try {
	   Statement statement = conn.createStatement();
	   ResultSet executeQuery = statement.executeQuery(queryList);
	   executeQuery.close();
	   conn.close();
	   
	  } catch (SQLException e) {
	   e.printStackTrace();
	  }
	 }
}

二:
package com.data;

import java.beans.PropertyVetoException;
import java.sql.SQLException;

import com.mchange.v2.c3p0.ComboPooledDataSource;

/**
 * C3p0连接池测试类
 * @author demo Yan
 */
public class TestC3p0 {
	final static String driver = "com.mysql.jdbc.Driver";  
    final static String jdbcUrl = "jdbc:mysql://119.x.x.x:3306/parking?useUnicode=true&characterEncoding=GBK&zeroDateTimeBehavior=convertToNull";
    final static String user = "dba";  
    final static String passwd = "xxx";  
    // 连接池初始化大小  
    final static int initialSize = 5;  
    // 连接池保持的最小连接数  
    final static int minPoolSize = 5;  
    // 连接池最大连接数量  10
    final static int maxPoolSize = 15;  
    // 最小逐出时间,100秒  
    final static int maxIdleTime = 100000;  
    // 连接失败时重试次数  
    final static int retryAttempts = 10;  
    // 当连接池连接耗尽时获取连接数   增量获取连接
    final static int acquireIncrement = 3;  
    // 数据源  
    final static ComboPooledDataSource c3p0DataSource = getC3p0DataSource();
    // SQL執行查询次数  ,扩大100倍/次
    final static int count = 100;
 
 
 public static void main(String[] args) {
  TestDao testDAO = new TestDao();  
         System.out.println("=C3p0 begin=");  
         // 調用次數
         for (int i = 0; i < 100; i++) {  
             try {
              queryC3p0(testDAO, c3p0DataSource, count);
    } catch (SQLException e) {
     e.printStackTrace();
    }  
         }  
         System.out.println("=C3p0 end=");  
 }
 
    public static void queryC3p0(TestDao testDAO, ComboPooledDataSource ds, int count) throws SQLException {  
        // 初始化连接池,防止时间过大  
        for (int i = 0; i < 100; i++) {  
            testDAO.query(ds.getConnection());  
        }  
        // 开始时间  
        long startMillis = System.currentTimeMillis();  
        // 循环查询  
        for (int i = 0; i < count; i++) {  
            testDAO.query(ds.getConnection());  
        }  
        // 结束时间  
        long endMillis = System.currentTimeMillis();  
        // 输出结束时间  
        System.out.println(endMillis - startMillis  +  "ms 时间差值");  
    }
 
    public static ComboPooledDataSource getC3p0DataSource() {  
        // 设置参数  
        ComboPooledDataSource cpds = new ComboPooledDataSource();  
        try {  
            cpds.setDriverClass(driver);  
        } catch (PropertyVetoException e) {  
            e.printStackTrace();  
        }  
        cpds.setJdbcUrl(jdbcUrl);  
        cpds.setUser(user);  
        cpds.setPassword(passwd);  
        cpds.setInitialPoolSize(initialSize);  
        cpds.setMinPoolSize(minPoolSize);  
        cpds.setMaxPoolSize(maxPoolSize);  
        cpds.setMaxIdleTime(maxIdleTime);  
        cpds.setAcquireRetryAttempts(retryAttempts);  
        cpds.setAcquireIncrement(acquireIncrement);  
        cpds.setTestConnectionOnCheckin(false);  
        cpds.setTestConnectionOnCheckout(false);  
        return cpds;  
    }
}

三:
package com.data;

import java.sql.SQLException;

import com.alibaba.druid.pool.DruidDataSource;

/**
 * Druid连接池测试类
 * @author demo Yan
 */
public class TestDruid {
	final static String driver = "com.mysql.jdbc.Driver";  
    final static String jdbcUrl = "jdbc:mysql://119.x.x.x:3306/parking?useUnicode=true&characterEncoding=GBK&zeroDateTimeBehavior=convertToNull";
    final static String user = "dba";  
    final static String passwd = "xxx";  
    // 连接池初始化大小  
    final static int initialSize = 5;  
    // 连接池保持的最小连接数  
    final static int minPoolSize = 5;  
    // 连接池最大连接数量  10
    final static int maxPoolSize = 15;  
    // 最小逐出时间,100秒  
    final static int maxIdleTime = 100000;  
    // 连接失败时重试次数  
    final static int retryAttempts = 10;  
    // 当连接池连接耗尽时获取连接数   增量获取连接
    final static int acquireIncrement = 3;  
    // Druid数据源  
    final static DruidDataSource druidDataSource = getDruidDataSource();  
    // SQL執行查询次数  ,扩大10倍/次
    final static int count = 100;
 
 public static void main(String[] args) {
 
  TestDao testDao = new TestDao();
        System.out.println("=Durid begin=");  
     // =============================調用次數==============================
        for (int i = 0; i < 100; i++) {  
         try {
    queryDruid(testDao, druidDataSource, count);
    //System.out.println("获取第"+i+"个");
   } catch (SQLException e) {
    e.printStackTrace();
   }  
        }  
        System.out.println("=Durid end=");  
 }
    public static void queryDruid(TestDao testDAO, DruidDataSource ds, int count) throws SQLException {  
     // 初始化连接池,防止时间过大  
        for (int i = 0; i < 100; i++) {  
            testDAO.query(ds.getConnection());  
        }  
        // 开始时间  
        long startMillis = System.currentTimeMillis();  
        // 循环查询  
        for (int i = 0; i < count; i++) {  
            testDAO.query(ds.getConnection());  
        }  
        // 结束时间  
        long endMillis = System.currentTimeMillis();
        // 输出结束时间  
        System.out.println(endMillis - startMillis  +  "ms 时间差值");  
    }
 
    public static DruidDataSource getDruidDataSource() {  
        DruidDataSource dds = new DruidDataSource();  
        dds.setUsername(user);  
        dds.setUrl(jdbcUrl);  
        dds.setPassword(passwd);  
        dds.setDriverClassName(driver);  
        dds.setInitialSize(initialSize);  
        dds.setMaxActive(maxPoolSize);  
        dds.setMaxWait(maxIdleTime);  
        dds.setTestWhileIdle(false);  
        dds.setTestOnReturn(false);  
        dds.setTestOnBorrow(false);  
        return dds;  
    }
}

四:
package com.data;

import java.sql.SQLException;

import org.apache.tomcat.jdbc.pool.DataSource;

/**
 * JDBC连接池测试类
 * @author demo Yan
 *
 */
public class TestJDBC {
	final static String driver = "com.mysql.jdbc.Driver";  
    final static String jdbcUrl = "jdbc:mysql://119.x.x.x:3306/parking?useUnicode=true&characterEncoding=GBK&zeroDateTimeBehavior=convertToNull";
    final static String user = "dba";  
    final static String passwd = "";  
    // 连接池初始化大小  
    final static int initialSize = 5;  
    // 连接池保持的最小连接数  
    final static int minPoolSize = 5;  
    // 连接池最大连接数量  10
    final static int maxPoolSize = 15;  
    // 最小逐出时间,100秒  
    final static int maxIdleTime = 100000;  
    // 连接失败时重试次数  
    final static int retryAttempts = 10;  
    // 当连接池连接耗尽时获取连接数   增量获取连接
    final static int acquireIncrement = 3;  
    // Druid数据源  
    final static DataSource  tomcatDataSource  = getTomcatDataSource();  
    // 查询次数  
    final static int count = 100;
 
 public static void main(String[] args) {
  TestDao testDAO = new TestDao();  
         System.out.println("=JDBC begin=");  
      // 調用次數
         for (int i = 0; i < 100; i++) {  
             try {
     queryTomcatJDBC(testDAO, tomcatDataSource, count);
    } catch (SQLException e) {
     e.printStackTrace();
    }  
         }  
         System.out.println("=JDBC end=");  
 }
 
  public static void queryTomcatJDBC(TestDao testDAO, DataSource ds, int count) throws SQLException {  
  // 初始化连接池,防止时间过大  
         for (int i = 0; i < 100; i++) {  
             testDAO.query(ds.getConnection());  
         }  
         // 开始时间  
         long startMillis = System.currentTimeMillis();  
         // 循环查询  
         for (int i = 0; i < count; i++) {  
             testDAO.query(ds.getConnection());  
         }  
         // 结束时间  
         long endMillis = System.currentTimeMillis();  
         // 输出结束时间  
         System.out.println(endMillis - startMillis  +  "ms 时间差值");  
     }
 
    public static DataSource getTomcatDataSource() {  
        DataSource ds = new DataSource();  
        ds.setUrl(jdbcUrl);  
        ds.setUsername(user);  
        ds.setPassword(passwd);  
        ds.setDriverClassName(driver);  
        ds.setInitialSize(initialSize);  
        ds.setMaxIdle(minPoolSize);  
        ds.setMaxActive(maxPoolSize);  
        ds.setTestWhileIdle(false);  
        ds.setTestOnBorrow(false);  
        ds.setTestOnConnect(false);  
        ds.setTestOnReturn(false);  
        return ds;  
    }
}

结果是:
=C3p0 begin=
4587ms 时间差值
4078ms 时间差值
4021ms 时间差值
4203ms 时间差值
3993ms 时间差值
4443ms 时间差值
4537ms 时间差值
4326ms 时间差值
4496ms 时间差值
4122ms 时间差值
4546ms 时间差值
5057ms 时间差值
4221ms 时间差值
4116ms 时间差值
4096ms 时间差值
4741ms 时间差值
4392ms 时间差值
4329ms 时间差值
5349ms 时间差值
4432ms 时间差值
4198ms 时间差值
4646ms 时间差值
4987ms 时间差值
5476ms 时间差值
5284ms 时间差值
4885ms 时间差值
4805ms 时间差值
4910ms 时间差值
4287ms 时间差值
4533ms 时间差值
4493ms 时间差值
4603ms 时间差值
4323ms 时间差值
4418ms 时间差值
4066ms 时间差值
4175ms 时间差值
4270ms 时间差值
4106ms 时间差值
4266ms 时间差值
4708ms 时间差值
4855ms 时间差值
5603ms 时间差值
5055ms 时间差值
4830ms 时间差值
4661ms 时间差值
4740ms 时间差值
4715ms 时间差值
4725ms 时间差值
4673ms 时间差值
4747ms 时间差值
4270ms 时间差值
4839ms 时间差值
4993ms 时间差值
5950ms 时间差值
5161ms 时间差值
4993ms 时间差值
4487ms 时间差值
4383ms 时间差值
4064ms 时间差值
4536ms 时间差值
4137ms 时间差值
4660ms 时间差值
4616ms 时间差值
5263ms 时间差值
5715ms 时间差值
5203ms 时间差值
7300ms 时间差值
7531ms 时间差值
11375ms 时间差值
5194ms 时间差值
5932ms 时间差值
6865ms 时间差值
7047ms 时间差值
5207ms 时间差值
6468ms 时间差值
5125ms 时间差值
4827ms 时间差值
4731ms 时间差值
5314ms 时间差值
5702ms 时间差值
4404ms 时间差值
6076ms 时间差值
6470ms 时间差值
6477ms 时间差值
6270ms 时间差值
7265ms 时间差值
4849ms 时间差值
5065ms 时间差值
5257ms 时间差值
6591ms 时间差值
5284ms 时间差值
4529ms 时间差值
4764ms 时间差值
5105ms 时间差值
4576ms 时间差值
4886ms 时间差值
4638ms 时间差值
5315ms 时间差值
5238ms 时间差值
5723ms 时间差值
=C3p0 end=

=Durid begin=
8792ms 时间差值
6481ms 时间差值
5473ms 时间差值
5169ms 时间差值
4720ms 时间差值
5028ms 时间差值
5085ms 时间差值
5170ms 时间差值
4728ms 时间差值
4946ms 时间差值
5409ms 时间差值
5961ms 时间差值
4827ms 时间差值
4649ms 时间差值
6663ms 时间差值
5915ms 时间差值
6675ms 时间差值
5557ms 时间差值
6107ms 时间差值
5750ms 时间差值
4819ms 时间差值
5988ms 时间差值
5009ms 时间差值
4994ms 时间差值
6953ms 时间差值
5861ms 时间差值
5038ms 时间差值
5862ms 时间差值
6465ms 时间差值
6127ms 时间差值
5383ms 时间差值
5201ms 时间差值
5101ms 时间差值
5721ms 时间差值
5183ms 时间差值
4564ms 时间差值
4455ms 时间差值
4703ms 时间差值
4689ms 时间差值
5497ms 时间差值
4963ms 时间差值
4439ms 时间差值
5510ms 时间差值
6490ms 时间差值
4803ms 时间差值
4455ms 时间差值
5737ms 时间差值
4466ms 时间差值
5283ms 时间差值
4875ms 时间差值
5929ms 时间差值
5574ms 时间差值
5228ms 时间差值
5333ms 时间差值
6119ms 时间差值
5792ms 时间差值
5945ms 时间差值
6906ms 时间差值
5326ms 时间差值
4622ms 时间差值
5915ms 时间差值
5026ms 时间差值
5724ms 时间差值
5428ms 时间差值
6343ms 时间差值
5442ms 时间差值
5766ms 时间差值
5686ms 时间差值
4619ms 时间差值
5381ms 时间差值
6029ms 时间差值
5724ms 时间差值
5179ms 时间差值
6645ms 时间差值
5598ms 时间差值
5194ms 时间差值
5515ms 时间差值
5854ms 时间差值
5495ms 时间差值
5065ms 时间差值
6529ms 时间差值
7326ms 时间差值
8997ms 时间差值
6799ms 时间差值
8019ms 时间差值
8366ms 时间差值
5837ms 时间差值
5705ms 时间差值
5765ms 时间差值
4980ms 时间差值
5912ms 时间差值
5113ms 时间差值
4799ms 时间差值
5232ms 时间差值
5085ms 时间差值
5355ms 时间差值
5765ms 时间差值
5094ms 时间差值
6388ms 时间差值
5228ms 时间差值
=Durid end=

************************多线程操作(5个线程)************************
一:
package com.data.thread;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class DBTest implements Runnable {
	public long startTime = 0;
	public static int count = 0;

	public static void main(String[] args) {
		// 初始化DB
		 C3p0.init();
		// DBCP.init();
		// Druid.init();
		DBTest test = new DBTest();
		// DB启动后,开启线程
		test.startup();
	}

	/**
	 * 开启5个线程
	 */
	public void startup() {
		for (int i = 0; i < 5; i++) {
			Thread thread = new Thread(this);
			thread.start();
		}
	}

	@Override
	public void run() {
		if (count == 0 && startTime == 0) {
			startTime = System.currentTimeMillis();
			System.out.println("开始时间:" + startTime);
		}

		// SQL執行查询次数 ,扩大100倍/次
		for (int i = 0; i < 100; i++) {
			try {
				 Connection conn = C3p0.getConnection();
				// Connection conn = DBCP.getConnection();
				//Connection conn = Druid.getConnection();
				if (conn != null) {
					Statement statement = conn.createStatement();
					ResultSet rs = statement.executeQuery("select * from User_appuser_login");
					while (rs.next()) {
						String username = rs.getString(12);
						System.out.println("获取业务名:" + username);
						System.out.println("当前正在使用的线程:" + Thread.currentThread().getName());
					}
					rs.close();
					statement.close();
					conn.close();
				}
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		count++;
		if (count == 5) {
			long endTime = System.currentTimeMillis();
			System.out.println("结束时间:" + endTime);
			System.out.println("运行完毕!耗时为:" + (endTime - startTime) + "ms");
		}
	}
}

二:
package com.data.thread;
import java.sql.Connection;
import java.sql.SQLException;
import com.mchange.v2.c3p0.ComboPooledDataSource;

public class C3p0 {
	 private static ComboPooledDataSource dataSource = null;
	    public C3p0() {  
	     dataSource = new ComboPooledDataSource();
	    }  
	   
	    public static void init()
	    {
	     dataSource = new ComboPooledDataSource();
	       try {  
	        dataSource.setDriverClass("com.mysql.jdbc.Driver");
	        dataSource.setJdbcUrl("jdbc:mysql://119.x.x.x:3306/parking?useUnicode=true&characterEncoding=GBK&zeroDateTimeBehavior=convertToNull");
	           dataSource.setUser("dba");
	           dataSource.setPassword("xxx");
	           dataSource.setMaxPoolSize(15);
	           dataSource.setMinPoolSize(5);
	           dataSource.setInitialPoolSize(5);
	        } catch (Exception e) {  
	        }  
	    }  
	   
	    public static synchronized Connection getConnection() throws  SQLException {  
	        return dataSource.getConnection();
	}  
	   
	}

三:
package com.data.thread;

import java.sql.Connection;
import java.sql.SQLException;
import com.alibaba.druid.pool.DruidDataSource;
import com.mchange.v2.c3p0.ComboPooledDataSource;

public class Druid {
	private static DruidDataSource dataSource = null;

	public Druid() {
		dataSource = new DruidDataSource();
	}

	public static void init() {
		dataSource = new DruidDataSource();
		try {
			dataSource.setDriverClassName("com.mysql.jdbc.Driver");
			dataSource.setUrl("jdbc:mysql://119.x.x.x:3306/parking?useUnicode=true&characterEncoding=GBK&zeroDateTimeBehavior=convertToNull");
			dataSource.setUsername("dba");
			dataSource.setPassword("xxx");
			dataSource.setInitialSize(5);
			dataSource.setMaxActive(15);
			dataSource.setMaxWait(100000);
			dataSource.setTestWhileIdle(false);
			dataSource.setTestOnReturn(false);
			dataSource.setTestOnBorrow(false);
		} catch (Exception e) {
		}
	}

	public static synchronized Connection getConnection() throws SQLException {
		return dataSource.getConnection();
	}
}

四:
package com.data.thread;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;

import org.apache.commons.dbcp2.BasicDataSource;
import org.apache.commons.dbcp2.BasicDataSourceFactory;
 
public class DBCP {  
    private static BasicDataSource dataSource = null;  
      public DBCP() {  
    }  
 
    public static void init() {  
          if (dataSource != null) {  
            try {  
                dataSource.close();  
            } catch (Exception e) {  
            }  
            dataSource = null;  
        }  
          try {  
            Properties p = new Properties();  
            p.setProperty("driverClassName", "com.mysql.jdbc.Driver");  
            p.setProperty("url", "jdbc:mysql://119.x.x.x:3306/parking?useUnicode=true&characterEncoding=GBK&zeroDateTimeBehavior=convertToNull");  
            p.setProperty("password", "");  
            p.setProperty("username", "dba");  
            p.setProperty("maxActive", "15");  
            p.setProperty("maxIdle", "5");  
            //p.setProperty("minIdle", "30");
            p.setProperty("initialSize", "5");
            dataSource = (BasicDataSource) BasicDataSourceFactory.createDataSource(p);  
          } catch (Exception e) {  
            }  
    }  
      public static synchronized Connection getConnection() throws  SQLException {  
       return dataSource.getConnection();
    }  
}    执行结果:
C3p0运行完毕!耗时为:72340ms
druid运行完毕!耗时为:68374ms
DBCP运行完毕!耗时为:71367ms

线程同步下:
结论:少数线程内的性能接近
随着线程的增加,Druid和DBCP性能更好
=========================================
线程非同步下:
结论:少数线程内的性能DBCP差,C3p0和Druid更加
随着线程的增加,Druid和C3p0性能更好

***************************指标查看*************************
mysql>show status;
+-----------------------------------------------+---------------------+
| Variable_name                                 | Value               |
+-----------------------------------------------+---------------------+
| Aborted_clients                               | 4                   |
| Aborted_connects                              | 7039                |
| Binlog_cache_disk_use                         | 37                  |
| Binlog_cache_use                              | 29865887            |
| Binlog_stmt_cache_disk_use                    | 1                   |
| Binlog_stmt_cache_use                         | 445                 |
| Bytes_received                                | 464                 |
| Bytes_sent                                    | 28378               |
| Com_admin_commands                            | 0                   |
| Com_assign_to_keycache                        | 0                   |
| Com_alter_db                                  | 0                   |
| Com_alter_db_upgrade                          | 0                   |
| Com_alter_event                               | 0                   |
| Com_alter_function                            | 0                   |
| Com_alter_procedure                           | 0                   |
| Com_alter_server                              | 0                   |
| Com_alter_table                               | 0                   |
| Com_alter_tablespace                          | 0                   |
| Com_alter_user                                | 0                   |
| Com_analyze                                   | 0                   |
| Com_begin                                     | 0                   |
| Com_binlog                                    | 0                   |
| Com_call_procedure                            | 0                   |
| Com_change_db                                 | 0                   |
| Com_change_master                             | 0                   |
| Com_check                                     | 0                   |
| Com_checksum                                  | 0                   |
| Com_commit                                    | 0                   |
| Com_create_db                                 | 0                   |
| Com_create_event                              | 0                   |
| Com_create_function                           | 0                   |
| Com_create_index                              | 0                   |
| Com_create_procedure                          | 0                   |
| Com_create_server                             | 0                   |
| Com_create_table                              | 0                   |
| Com_create_trigger                            | 0                   |
| Com_create_udf                                | 0                   |
| Com_create_user                               | 0                   |
| Com_create_view                               | 0                   |
| Com_dealloc_sql                               | 0                   |
| Com_delete                                    | 0                   |
| Com_delete_multi                              | 0                   |
| Com_do                                        | 0                   |
| Com_drop_db                                   | 0                   |
| Com_drop_event                                | 0                   |
| Com_drop_function                             | 0                   |
| Com_drop_index                                | 0                   |
| Com_drop_procedure                            | 0                   |
| Com_drop_server                               | 0                   |
| Com_drop_table                                | 0                   |
| Com_drop_trigger                              | 0                   |
| Com_drop_user                                 | 0                   |
| Com_drop_view                                 | 0                   |
| Com_empty_query                               | 0                   |
| Com_execute_sql                               | 0                   |
| Com_flush                                     | 0                   |
| Com_get_diagnostics                           | 0                   |
| Com_grant                                     | 0                   |
| Com_ha_close                                  | 0                   |
| Com_ha_open                                   | 0                   |
| Com_ha_read                                   | 0                   |
| Com_help                                      | 0                   |
| Com_insert                                    | 0                   |
| Com_insert_select                             | 0                   |
| Com_install_plugin                            | 0                   |
| Com_kill                                      | 0                   |
| Com_load                                      | 0                   |
| Com_lock_tables                               | 0                   |
| Com_optimize                                  | 0                   |
| Com_preload_keys                              | 0                   |
| Com_prepare_sql                               | 0                   |
| Com_purge                                     | 0                   |
| Com_purge_before_date                         | 0                   |
| Com_release_savepoint                         | 0                   |
| Com_rename_table                              | 0                   |
| Com_rename_user                               | 0                   |
| Com_repair                                    | 0                   |
| Com_replace                                   | 0                   |
| Com_replace_select                            | 0                   |
| Com_reset                                     | 0                   |
| Com_resignal                                  | 0                   |
| Com_revoke                                    | 0                   |
| Com_revoke_all                                | 0                   |
| Com_rollback                                  | 0                   |
| Com_rollback_to_savepoint                     | 0                   |
| Com_savepoint                                 | 0                   |
| Com_select                                    | 1                   |
| Com_set_option                                | 0                   |
| Com_signal                                    | 0                   |
| Com_show_binlog_events                        | 0                   |
| Com_show_binlogs                              | 0                   |
| Com_show_charsets                             | 0                   |
| Com_show_collations                           | 0                   |
| Com_show_create_db                            | 0                   |
| Com_show_create_event                         | 0                   |
| Com_show_create_func                          | 0                   |
| Com_show_create_proc                          | 0                   |
| Com_show_create_table                         | 0                   |
| Com_show_create_trigger                       | 0                   |
| Com_show_databases                            | 0                   |
| Com_show_engine_logs                          | 0                   |
| Com_show_engine_mutex                         | 0                   |
| Com_show_engine_status                        | 0                   |
| Com_show_events                               | 0                   |
| Com_show_errors                               | 0                   |
| Com_show_fields                               | 0                   |
| Com_show_function_code                        | 0                   |
| Com_show_function_status                      | 0                   |
| Com_show_grants                               | 0                   |
| Com_show_keys                                 | 0                   |
| Com_show_master_status                        | 0                   |
| Com_show_open_tables                          | 0                   |
| Com_show_plugins                              | 0                   |
| Com_show_privileges                           | 0                   |
| Com_show_procedure_code                       | 0                   |
| Com_show_procedure_status                     | 0                   |
| Com_show_processlist                          | 4                   |
| Com_show_profile                              | 0                   |
| Com_show_profiles                             | 0                   |
| Com_show_relaylog_events                      | 0                   |
| Com_show_slave_hosts                          | 0                   |
| Com_show_slave_status                         | 1                   |
| Com_show_status                               | 5                   |
| Com_show_storage_engines                      | 0                   |
| Com_show_table_status                         | 0                   |
| Com_show_tables                               | 0                   |
| Com_show_triggers                             | 0                   |
| Com_show_variables                            | 0                   |
| Com_show_warnings                             | 0                   |
| Com_slave_start                               | 0                   |
| Com_slave_stop                                | 0                   |
| Com_stmt_close                                | 0                   |
| Com_stmt_execute                              | 0                   |
| Com_stmt_fetch                                | 0                   |
| Com_stmt_prepare                              | 0                   |
| Com_stmt_reprepare                            | 0                   |
| Com_stmt_reset                                | 0                   |
| Com_stmt_send_long_data                       | 0                   |
| Com_truncate                                  | 0                   |
| Com_uninstall_plugin                          | 0                   |
| Com_unlock_tables                             | 0                   |
| Com_update                                    | 0                   |
| Com_update_multi                              | 0                   |
| Com_xa_commit                                 | 0                   |
| Com_xa_end                                    | 0                   |
| Com_xa_prepare                                | 0                   |
| Com_xa_recover                                | 0                   |
| Com_xa_rollback                               | 0                   |
| Com_xa_start                                  | 0                   |
| Compression                                   | OFF                 |
| Connection_errors_accept                      | 0                   |
| Connection_errors_internal                    | 0                   |
| Connection_errors_max_connections             | 0                   |
| Connection_errors_peer_address                | 0                   |
| Connection_errors_select                      | 0                   |
| Connection_errors_tcpwrap                     | 0                   |
| Connections                                   | 9829                |
| Created_tmp_disk_tables                       | 0                   |
| Created_tmp_files                             | 9                   |
| Created_tmp_tables                            | 0                   |
| Delayed_errors                                | 0                   |
| Delayed_insert_threads                        | 0                   |
| Delayed_writes                                | 0                   |
| Flush_commands                                | 1                   |
| Handler_commit                                | 0                   |
| Handler_delete                                | 0                   |
| Handler_discover                              | 0                   |
| Handler_external_lock                         | 0                   |
| Handler_mrr_init                              | 0                   |
| Handler_prepare                               | 0                   |
| Handler_read_first                            | 0                   |
| Handler_read_key                              | 0                   |
| Handler_read_last                             | 0                   |
| Handler_read_next                             | 0                   |
| Handler_read_prev                             | 0                   |
| Handler_read_rnd                              | 0                   |
| Handler_read_rnd_next                         | 0                   |
| Handler_rollback                              | 0                   |
| Handler_savepoint                             | 0                   |
| Handler_savepoint_rollback                    | 0                   |
| Handler_update                                | 0                   |
| Handler_write                                 | 0                   |
| Innodb_buffer_pool_dump_status                | not started         |
| Innodb_buffer_pool_load_status                | not started         |
| Innodb_buffer_pool_pages_data                 | 6746                |
| Innodb_buffer_pool_bytes_data                 | 110526464           |
| Innodb_buffer_pool_pages_dirty                | 436                 |
| Innodb_buffer_pool_bytes_dirty                | 7143424             |
| Innodb_buffer_pool_pages_flushed              | 4661200             |
| Innodb_buffer_pool_pages_free                 | 1024                |
| Innodb_buffer_pool_pages_misc                 | 421                 |
| Innodb_buffer_pool_pages_total                | 8191                |
| Innodb_buffer_pool_read_ahead_rnd             | 0                   |
| Innodb_buffer_pool_read_ahead                 | 4286                |
| Innodb_buffer_pool_read_ahead_evicted         | 2                   |
| Innodb_buffer_pool_read_requests              | 206301301597        |
| Innodb_buffer_pool_reads                      | 2978                |
| Innodb_buffer_pool_wait_free                  | 0                   |
| Innodb_buffer_pool_write_requests             | 982150287           |
| Innodb_data_fsyncs                            | 128831453           |
| Innodb_data_pending_fsyncs                    | 0                   |
| Innodb_data_pending_reads                     | 0                   |
| Innodb_data_pending_writes                    | 0                   |
| Innodb_data_read                              | 119099392           |
| Innodb_data_reads                             | 7281                |
| Innodb_data_writes                            | 133226820           |
| Innodb_data_written                           | 275932732928        |
| Innodb_dblwr_pages_written                    | 4661200             |
| Innodb_dblwr_writes                           | 172095              |
| Innodb_have_atomic_builtins                   | ON                  |
| Innodb_log_waits                              | 0                   |
| Innodb_log_write_requests                     | 113817951           |
| Innodb_log_writes                             | 128335531           |
| Innodb_os_log_fsyncs                          | 128360182           |
| Innodb_os_log_pending_fsyncs                  | 0                   |
| Innodb_os_log_pending_writes                  | 0                   |
| Innodb_os_log_written                         | 123185655296        |
| Innodb_page_size                              | 16384               |
| Innodb_pages_created                          | 33433               |
| Innodb_pages_read                             | 7264                |
| Innodb_pages_written                          | 4661200             |
| Innodb_row_lock_current_waits                 | 0                   |
| Innodb_row_lock_time                          | 19                  |
| Innodb_row_lock_time_avg                      | 3                   |
| Innodb_row_lock_time_max                      | 9                   |
| Innodb_row_lock_waits                         | 5                   |
| Innodb_rows_deleted                           | 6801                |
| Innodb_rows_inserted                          | 2843637             |
| Innodb_rows_read                              | 1128879378270       |
| Innodb_rows_updated                           | 145093743           |
| Innodb_num_open_files                         | 140                 |
| Innodb_truncated_status_writes                | 0                   |
| Innodb_available_undo_logs                    | 128                 |
| Key_blocks_not_flushed                        | 0                   |
| Key_blocks_unused                             | 6694                |
| Key_blocks_used                               | 83                  |
| Key_read_requests                             | 34443               |
| Key_reads                                     | 2                   |
| Key_write_requests                            | 8410                |
| Key_writes                                    | 179                 |
| Last_query_cost                               | 0.000000            |
| Last_query_partial_plans                      | 0                   |
| Max_used_connections                          | 4                   |
| Not_flushed_delayed_rows                      | 0                   |
| Open_files                                    | 55                  |
| Open_streams                                  | 0                   |
| Open_table_definitions                        | 222                 |
| Open_tables                                   | 948                 |
| Opened_files                                  | 2889                |
| Opened_table_definitions                      | 0                   |
| Opened_tables                                 | 0                   |
| Performance_schema_accounts_lost              | 0                   |
| Performance_schema_cond_classes_lost          | 0                   |
| Performance_schema_cond_instances_lost        | 0                   |
| Performance_schema_digest_lost                | 0                   |
| Performance_schema_file_classes_lost          | 0                   |
| Performance_schema_file_handles_lost          | 0                   |
| Performance_schema_file_instances_lost        | 0                   |
| Performance_schema_hosts_lost                 | 0                   |
| Performance_schema_locker_lost                | 0                   |
| Performance_schema_mutex_classes_lost         | 0                   |
| Performance_schema_mutex_instances_lost       | 0                   |
| Performance_schema_rwlock_classes_lost        | 0                   |
| Performance_schema_rwlock_instances_lost      | 0                   |
| Performance_schema_session_connect_attrs_lost | 0                   |
| Performance_schema_socket_classes_lost        | 0                   |
| Performance_schema_socket_instances_lost      | 0                   |
| Performance_schema_stage_classes_lost         | 0                   |
| Performance_schema_statement_classes_lost     | 0                   |
| Performance_schema_table_handles_lost         | 0                   |
| Performance_schema_table_instances_lost       | 0                   |
| Performance_schema_thread_classes_lost        | 0                   |
| Performance_schema_thread_instances_lost      | 0                   |
| Performance_schema_users_lost                 | 0                   |
| Prepared_stmt_count                           | 0                   |
| Qcache_free_blocks                            | 1                   |
| Qcache_free_memory                            | 1031352             |
| Qcache_hits                                   | 0                   |
| Qcache_inserts                                | 0                   |
| Qcache_lowmem_prunes                          | 0                   |
| Qcache_not_cached                             | 88                  |
| Qcache_queries_in_cache                       | 0                   |
| Qcache_total_blocks                           | 1                   |
| Queries                                       | 286729695           |
| Questions                                     | 11                  |
| Select_full_join                              | 0                   |
| Select_full_range_join                        | 0                   |
| Select_range                                  | 0                   |
| Select_range_check                            | 0                   |
| Select_scan                                   | 0                   |
| Slave_heartbeat_period                        | 30.000              |
| Slave_last_heartbeat                          | 2017-10-13 00:09:50 |
| Slave_open_temp_tables                        | 0                   |
| Slave_received_heartbeats                     | 215                 |
| Slave_retried_transactions                    | 0                   |
| Slave_running                                 | ON                  |
| Slow_launch_threads                           | 0                   |
| Slow_queries                                  | 0                   |
| Sort_merge_passes                             | 0                   |
| Sort_range                                    | 0                   |
| Sort_rows                                     | 0                   |
| Sort_scan                                     | 0                   |
| Ssl_accept_renegotiates                       | 0                   |
| Ssl_accepts                                   | 0                   |
| Ssl_callback_cache_hits                       | 0                   |
| Ssl_cipher                                    |                     |
| Ssl_cipher_list                               |                     |
| Ssl_client_connects                           | 0                   |
| Ssl_connect_renegotiates                      | 0                   |
| Ssl_ctx_verify_depth                          | 0                   |
| Ssl_ctx_verify_mode                           | 0                   |
| Ssl_default_timeout                           | 0                   |
| Ssl_finished_accepts                          | 0                   |
| Ssl_finished_connects                         | 0                   |
| Ssl_server_not_after                          |                     |
| Ssl_server_not_before                         |                     |
| Ssl_session_cache_hits                        | 0                   |
| Ssl_session_cache_misses                      | 0                   |
| Ssl_session_cache_mode                        | NONE                |
| Ssl_session_cache_overflows                   | 0                   |
| Ssl_session_cache_size                        | 0                   |
| Ssl_session_cache_timeouts                    | 0                   |
| Ssl_sessions_reused                           | 0                   |
| Ssl_used_session_cache_entries                | 0                   |
| Ssl_verify_depth                              | 0                   |
| Ssl_verify_mode                               | 0                   |
| Ssl_version                                   |                     |
| Table_locks_immediate                         | 360680264           |
| Table_locks_waited                            | 18                  |
| Table_open_cache_hits                         | 0                   |
| Table_open_cache_misses                       | 0                   |
| Table_open_cache_overflows                    | 0                   |
| Tc_log_max_pages_used                         | 0                   |
| Tc_log_page_size                              | 0                   |
| Tc_log_page_waits                             | 0                   |
| Threads_cached                                | 2                   |
| Threads_connected                             | 2                   |
| Threads_created                               | 4                   |
| Threads_running                               | 23                  |
| Uptime                                        | 155979              |
| Uptime_since_flush_status                     | 155979              |
+-----------------------------------------------+---------------------+

关键属性:
Aborted_clients 由于客户没有正确关闭连接已经死掉,已经放弃的连接数量。
Aborted_connects 尝试已经失败的MySQL服务器的连接的次数。
Connections 试图连接MySQL服务器的次数。
Created_tmp_tables 当执行语句时,已经被创造了的隐含临时表的数量。
Delayed_insert_threads 正在使用的延迟插入处理器线程的数量。
Delayed_writes 用INSERT DELAYED写入的行数。
Delayed_errors 用INSERT DELAYED写入的发生某些错误(可能重复键值)的行数。
Flush_commands 执行FLUSH命令的次数。
Handler_delete 请求从一张表中删除行的次数。
Handler_read_first 请求读入表中第一行的次数。
Handler_read_key 请求数字基于键读行。
Handler_read_next 请求读入基于一个键的一行的次数。
Handler_read_rnd 请求读入基于一个固定位置的一行的次数。
Handler_update 请求更新表中一行的次数。
Handler_write 请求向表中插入一行的次数。
Key_blocks_used 用于关键字缓存的块的数量。
Key_read_requests 请求从缓存读入一个键值的次数。
Key_reads 从磁盘物理读入一个键值的次数。
Key_write_requests 请求将一个关键字块写入缓存次数。
Key_writes 将一个键值块物理写入磁盘的次数。
Max_used_connections 同时使用的连接的最大数目。
Not_flushed_key_blocks 在键缓存中已经改变但是还没被清空到磁盘上的键块。
Not_flushed_delayed_rows 在INSERT DELAY队列中等待写入的行的数量。
Open_tables 打开表的数量。
Open_files 打开文件的数量。
Open_streams 打开流的数量(主要用于日志记载)
Opened_tables 已经打开的表的数量。
Questions 发往服务器的查询的数量。
Slow_queries 要花超过long_query_time时间的查询数量。
Threads_connected 当前打开的连接的数量。
Threads_running 不在睡眠的线程数量。
Uptime 服务器工作了多少秒。

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