Mysql AWS RDS性能非常低_Mysql_Amazon Web Services_Innodb_Amazon Rds_Aws Rds Data Service

Mysql AWS RDS性能非常低

mysql amazon-web-services

Mysql AWS RDS性能非常低,mysql,amazon-web-services,innodb,amazon-rds,aws-rds-data-service,Mysql,Amazon Web Services,Innodb,Amazon Rds,Aws Rds Data Service,有两个数据库，AWS RDS和Digitalocean$5 VPS。我将相同的.sql文件导入到两个数据库中，它们之间的性能差异几乎为66000% select count(special_cargo_id) from special_cargos; AWS RDS运行时间=35.681秒在Mysql上执行5$VPS运行时间=0.086秒详情：桌子长度 1.85GB行~260k MySQL版本8 表引擎InnoDB RDS输出 CREATE TABLE `special_cargos

有两个数据库，AWS RDS和Digitalocean$5 VPS。我将相同的.sql文件导入到两个数据库中，它们之间的性能差异几乎为66000%

select count(special_cargo_id) from special_cargos;

AWS RDS运行时间=35.681秒

在Mysql上执行5$VPS运行时间=0.086秒

详情：

桌子长度

1.85GB行~260k

MySQL版本8

表引擎InnoDB

RDS输出

CREATE TABLE `special_cargos` (
  `special_cargo_id` int(11) NOT NULL AUTO_INCREMENT,
  `barcode` varchar(20) DEFAULT '',
  `salesCode` varchar(15) NOT NULL,
  `price` varchar(15) NOT NULL,
  `para` varchar(3) DEFAULT NULL,
  `postaceki` varchar(25) DEFAULT '',
  `iban` varchar(30) DEFAULT NULL,
  `send_type` tinyint(1) unsigned NOT NULL,
  `customer_id` int(11) NOT NULL,
  `address_id` int(11) NOT NULL,
  `height` varchar(5) DEFAULT '',
  `weight` varchar(5) DEFAULT '',
  `width` varchar(5) NOT NULL DEFAULT '',
  `desi` varchar(5) DEFAULT '',
  `length` varchar(255) DEFAULT '',
  `customer_firstname` varchar(32) NOT NULL,
  `customer_lastname` varchar(32) NOT NULL,
  `customer_company` varchar(40) NOT NULL,
  `customer_address` varchar(255) NOT NULL,
  `customer_city` int(11) NOT NULL DEFAULT '0',
  `customer_city_name` varchar(55) DEFAULT '',
  `customer_zone_id` int(11) NOT NULL DEFAULT '0',
  `customer_zone_name` varchar(55) DEFAULT '',
  `customer_postcode` varchar(10) NOT NULL,
  `firstname` varchar(32) NOT NULL,
  `lastname` varchar(32) NOT NULL,
  `company` varchar(40) DEFAULT '',
  `address` varchar(255) NOT NULL,
  `country_id` int(5) DEFAULT NULL,
  `country_name` varchar(64) DEFAULT NULL,
  `city_id` int(11) NOT NULL,
  `city_name` varchar(55) NOT NULL,
  `district_id` int(11) NOT NULL,
  `district_name` varchar(64) NOT NULL,
  `email` varchar(96) NOT NULL,
  `phone` varchar(55) NOT NULL,
  `postcode` varchar(10) DEFAULT '',
  `product` text,
  `sendText` text,
  `returnText` text,
  `created_at` datetime DEFAULT NULL,
  `updated_at` datetime DEFAULT NULL,
  `deleted_at` datetime DEFAULT NULL,
  `cargo_firm` tinyint(1) NOT NULL DEFAULT '0',
  `ups_barcode_link` text,
  `status` tinyint(1) NOT NULL DEFAULT '0',
  PRIMARY KEY (`special_cargo_id`),
  KEY `customer_id` (`customer_id`),
  KEY `special_cargo_id` (`special_cargo_id`),
  KEY `barcode` (`barcode`),
  KEY `salesCode` (`salesCode`),
  KEY `price` (`price`),
  KEY `postaceki` (`postaceki`),
  KEY `customer_firstname` (`customer_firstname`),
  KEY `customer_lastname` (`customer_lastname`),
  KEY `firstname` (`firstname`),
  KEY `lastname` (`lastname`),
  KEY `customer_company` (`customer_company`),
  KEY `customer_address` (`customer_address`),
  KEY `customer_city_name` (`customer_city_name`),
  KEY `customer_zone_name` (`customer_zone_name`),
  KEY `company` (`company`),
  KEY `address` (`address`),
  KEY `city_name` (`city_name`),
  KEY `district_name` (`district_name`),
  KEY `email` (`email`),
  KEY `phone` (`phone`),
  KEY `postcode` (`postcode`),
  KEY `index_special_cargos` (`special_cargo_id`)
) ENGINE=InnoDB AUTO_INCREMENT=497539 DEFAULT CHARSET=utf8

+-----------------------+----------+
|Variable_name          |Value     |
+-----------------------+----------+
|innodb_buffer_pool_size|1073741824|
+-----------------------+----------+

+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+
|id|select_type|table         |partitions|type |possible_keys|key        |key_len|ref |rows  |filtered|Extra      |
+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+
|1 |SIMPLE     |special_cargos|NULL      |index|NULL         |customer_id|4      |NULL|146973|100     |Using index|
+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+

CREATE TABLE `special_cargos` (
  `special_cargo_id` int(11) NOT NULL AUTO_INCREMENT,
  `barcode` varchar(20) NOT NULL,
  `salesCode` varchar(15) NOT NULL,
  `price` varchar(15) NOT NULL,
  `para` varchar(3) DEFAULT NULL,
  `postaceki` varchar(25) NOT NULL,
  `iban` varchar(30) DEFAULT NULL,
  `send_type` tinyint(1) unsigned NOT NULL,
  `customer_id` int(11) NOT NULL,
  `address_id` int(11) NOT NULL,
  `height` varchar(5) NOT NULL,
  `weight` varchar(5) NOT NULL,
  `width` varchar(5) NOT NULL,
  `desi` varchar(5) NOT NULL,
  `length` varchar(255) NOT NULL,
  `customer_firstname` varchar(32) NOT NULL,
  `customer_lastname` varchar(32) NOT NULL,
  `customer_company` varchar(40) NOT NULL,
  `customer_address` varchar(255) NOT NULL,
  `customer_city` int(11) NOT NULL,
  `customer_city_name` varchar(55) NOT NULL,
  `customer_zone_id` int(11) NOT NULL,
  `customer_zone_name` varchar(55) NOT NULL,
  `customer_postcode` varchar(10) NOT NULL,
  `firstname` varchar(32) NOT NULL,
  `lastname` varchar(32) NOT NULL,
  `company` varchar(40) NOT NULL,
  `address` varchar(255) NOT NULL,
  `country_id` int(5) DEFAULT NULL,
  `country_name` varchar(64) DEFAULT NULL,
  `city_id` int(11) NOT NULL,
  `city_name` varchar(55) NOT NULL,
  `district_id` int(11) NOT NULL,
  `district_name` varchar(64) NOT NULL,
  `email` varchar(96) NOT NULL,
  `phone` varchar(55) NOT NULL,
  `postcode` varchar(10) NOT NULL,
  `product` text,
  `sendText` text NOT NULL,
  `returnText` text NOT NULL,
  `created_at` datetime NOT NULL,
  `updated_at` datetime NOT NULL,
  `deleted_at` datetime DEFAULT NULL,
  `cargo_firm` int(1) NOT NULL DEFAULT '0',
  `ups_barcode_link` text,
  `status` int(1) NOT NULL DEFAULT '0',
  PRIMARY KEY (`special_cargo_id`),
  KEY `customer_id` (`customer_id`),
  KEY `special_cargo_id` (`special_cargo_id`),
  KEY `barcode` (`barcode`),
  KEY `salesCode` (`salesCode`),
  KEY `price` (`price`),
  KEY `postaceki` (`postaceki`),
  KEY `customer_firstname` (`customer_firstname`),
  KEY `customer_lastname` (`customer_lastname`),
  KEY `firstname` (`firstname`),
  KEY `lastname` (`lastname`),
  KEY `customer_company` (`customer_company`),
  KEY `customer_address` (`customer_address`),
  KEY `customer_city_name` (`customer_city_name`),
  KEY `customer_zone_name` (`customer_zone_name`),
  KEY `company` (`company`),
  KEY `address` (`address`),
  KEY `city_name` (`city_name`),
  KEY `district_name` (`district_name`),
  KEY `email` (`email`),
  KEY `phone` (`phone`),
  KEY `postcode` (`postcode`)
) ENGINE=InnoDB AUTO_INCREMENT=497037 DEFAULT CHARSET=utf8

+-----------------------+---------+
|Variable_name          |Value    |
+-----------------------+---------+
|innodb_buffer_pool_size|134217728|
+-----------------------+---------+

+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+
|id|select_type|table         |partitions|type |possible_keys|key        |key_len|ref |rows  |filtered|Extra      |
+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+
|1 |SIMPLE     |special_cargos|NULL      |index|NULL         |customer_id|4      |NULL|133967|100     |Using index|
+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+

MYSQL输出上的简单VPS

CREATE TABLE `special_cargos` (
  `special_cargo_id` int(11) NOT NULL AUTO_INCREMENT,
  `barcode` varchar(20) DEFAULT '',
  `salesCode` varchar(15) NOT NULL,
  `price` varchar(15) NOT NULL,
  `para` varchar(3) DEFAULT NULL,
  `postaceki` varchar(25) DEFAULT '',
  `iban` varchar(30) DEFAULT NULL,
  `send_type` tinyint(1) unsigned NOT NULL,
  `customer_id` int(11) NOT NULL,
  `address_id` int(11) NOT NULL,
  `height` varchar(5) DEFAULT '',
  `weight` varchar(5) DEFAULT '',
  `width` varchar(5) NOT NULL DEFAULT '',
  `desi` varchar(5) DEFAULT '',
  `length` varchar(255) DEFAULT '',
  `customer_firstname` varchar(32) NOT NULL,
  `customer_lastname` varchar(32) NOT NULL,
  `customer_company` varchar(40) NOT NULL,
  `customer_address` varchar(255) NOT NULL,
  `customer_city` int(11) NOT NULL DEFAULT '0',
  `customer_city_name` varchar(55) DEFAULT '',
  `customer_zone_id` int(11) NOT NULL DEFAULT '0',
  `customer_zone_name` varchar(55) DEFAULT '',
  `customer_postcode` varchar(10) NOT NULL,
  `firstname` varchar(32) NOT NULL,
  `lastname` varchar(32) NOT NULL,
  `company` varchar(40) DEFAULT '',
  `address` varchar(255) NOT NULL,
  `country_id` int(5) DEFAULT NULL,
  `country_name` varchar(64) DEFAULT NULL,
  `city_id` int(11) NOT NULL,
  `city_name` varchar(55) NOT NULL,
  `district_id` int(11) NOT NULL,
  `district_name` varchar(64) NOT NULL,
  `email` varchar(96) NOT NULL,
  `phone` varchar(55) NOT NULL,
  `postcode` varchar(10) DEFAULT '',
  `product` text,
  `sendText` text,
  `returnText` text,
  `created_at` datetime DEFAULT NULL,
  `updated_at` datetime DEFAULT NULL,
  `deleted_at` datetime DEFAULT NULL,
  `cargo_firm` tinyint(1) NOT NULL DEFAULT '0',
  `ups_barcode_link` text,
  `status` tinyint(1) NOT NULL DEFAULT '0',
  PRIMARY KEY (`special_cargo_id`),
  KEY `customer_id` (`customer_id`),
  KEY `special_cargo_id` (`special_cargo_id`),
  KEY `barcode` (`barcode`),
  KEY `salesCode` (`salesCode`),
  KEY `price` (`price`),
  KEY `postaceki` (`postaceki`),
  KEY `customer_firstname` (`customer_firstname`),
  KEY `customer_lastname` (`customer_lastname`),
  KEY `firstname` (`firstname`),
  KEY `lastname` (`lastname`),
  KEY `customer_company` (`customer_company`),
  KEY `customer_address` (`customer_address`),
  KEY `customer_city_name` (`customer_city_name`),
  KEY `customer_zone_name` (`customer_zone_name`),
  KEY `company` (`company`),
  KEY `address` (`address`),
  KEY `city_name` (`city_name`),
  KEY `district_name` (`district_name`),
  KEY `email` (`email`),
  KEY `phone` (`phone`),
  KEY `postcode` (`postcode`),
  KEY `index_special_cargos` (`special_cargo_id`)
) ENGINE=InnoDB AUTO_INCREMENT=497539 DEFAULT CHARSET=utf8

+-----------------------+----------+
|Variable_name          |Value     |
+-----------------------+----------+
|innodb_buffer_pool_size|1073741824|
+-----------------------+----------+

+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+
|id|select_type|table         |partitions|type |possible_keys|key        |key_len|ref |rows  |filtered|Extra      |
+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+
|1 |SIMPLE     |special_cargos|NULL      |index|NULL         |customer_id|4      |NULL|146973|100     |Using index|
+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+

CREATE TABLE `special_cargos` (
  `special_cargo_id` int(11) NOT NULL AUTO_INCREMENT,
  `barcode` varchar(20) NOT NULL,
  `salesCode` varchar(15) NOT NULL,
  `price` varchar(15) NOT NULL,
  `para` varchar(3) DEFAULT NULL,
  `postaceki` varchar(25) NOT NULL,
  `iban` varchar(30) DEFAULT NULL,
  `send_type` tinyint(1) unsigned NOT NULL,
  `customer_id` int(11) NOT NULL,
  `address_id` int(11) NOT NULL,
  `height` varchar(5) NOT NULL,
  `weight` varchar(5) NOT NULL,
  `width` varchar(5) NOT NULL,
  `desi` varchar(5) NOT NULL,
  `length` varchar(255) NOT NULL,
  `customer_firstname` varchar(32) NOT NULL,
  `customer_lastname` varchar(32) NOT NULL,
  `customer_company` varchar(40) NOT NULL,
  `customer_address` varchar(255) NOT NULL,
  `customer_city` int(11) NOT NULL,
  `customer_city_name` varchar(55) NOT NULL,
  `customer_zone_id` int(11) NOT NULL,
  `customer_zone_name` varchar(55) NOT NULL,
  `customer_postcode` varchar(10) NOT NULL,
  `firstname` varchar(32) NOT NULL,
  `lastname` varchar(32) NOT NULL,
  `company` varchar(40) NOT NULL,
  `address` varchar(255) NOT NULL,
  `country_id` int(5) DEFAULT NULL,
  `country_name` varchar(64) DEFAULT NULL,
  `city_id` int(11) NOT NULL,
  `city_name` varchar(55) NOT NULL,
  `district_id` int(11) NOT NULL,
  `district_name` varchar(64) NOT NULL,
  `email` varchar(96) NOT NULL,
  `phone` varchar(55) NOT NULL,
  `postcode` varchar(10) NOT NULL,
  `product` text,
  `sendText` text NOT NULL,
  `returnText` text NOT NULL,
  `created_at` datetime NOT NULL,
  `updated_at` datetime NOT NULL,
  `deleted_at` datetime DEFAULT NULL,
  `cargo_firm` int(1) NOT NULL DEFAULT '0',
  `ups_barcode_link` text,
  `status` int(1) NOT NULL DEFAULT '0',
  PRIMARY KEY (`special_cargo_id`),
  KEY `customer_id` (`customer_id`),
  KEY `special_cargo_id` (`special_cargo_id`),
  KEY `barcode` (`barcode`),
  KEY `salesCode` (`salesCode`),
  KEY `price` (`price`),
  KEY `postaceki` (`postaceki`),
  KEY `customer_firstname` (`customer_firstname`),
  KEY `customer_lastname` (`customer_lastname`),
  KEY `firstname` (`firstname`),
  KEY `lastname` (`lastname`),
  KEY `customer_company` (`customer_company`),
  KEY `customer_address` (`customer_address`),
  KEY `customer_city_name` (`customer_city_name`),
  KEY `customer_zone_name` (`customer_zone_name`),
  KEY `company` (`company`),
  KEY `address` (`address`),
  KEY `city_name` (`city_name`),
  KEY `district_name` (`district_name`),
  KEY `email` (`email`),
  KEY `phone` (`phone`),
  KEY `postcode` (`postcode`)
) ENGINE=InnoDB AUTO_INCREMENT=497037 DEFAULT CHARSET=utf8

+-----------------------+---------+
|Variable_name          |Value    |
+-----------------------+---------+
|innodb_buffer_pool_size|134217728|
+-----------------------+---------+

+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+
|id|select_type|table         |partitions|type |possible_keys|key        |key_len|ref |rows  |filtered|Extra      |
+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+
|1 |SIMPLE     |special_cargos|NULL      |index|NULL         |customer_id|4      |NULL|133967|100     |Using index|
+--+-----------+--------------+----------+-----+-------------+-----------+-------+----+------+--------+-----------+

您能否提供以下内容的输出：

SHOW CREATE TABLE special_cargos;
SHOW GLOBAL VARIABLES LIKE 'innodb_buffer_pool_size';
EXPLAIN select count(special_cargo_id) from special_cargos;

在RDS和您的非RDS实例上

假设

special\u cargo\u id

是主键，并且它适合RAM，并且innodb\u buffer\u pool\u大小配置合理（在具有2GB RAM的服务器上，1GB是一个合理的数量，尽管RDS应该预先配置为sane值），它应该在两个节点上运行得类似

我想到了两种可能的解释：

1）在RDS上，您没有定义为PK的

特殊货物id

2） RDS出于某种原因选择不使用索引（比较

EXPLAIN

输出将确认是否发生这种情况）

编辑：

事实上-你确定你的5美元VPS正在使用InnoDB吗？如果你在0.08秒后得到答案，听起来它甚至没有扫描索引。在VPS上，您很可能正在使用MyISAM，它会在每次写入后更新表头中的行数，特别是从表名中选择计数（*）查询会立即返回-正如您所观察到的那样

编辑2：

哇-那么VPS只配置了128MB的innodb_buffer_pool_大小，它的运行速度仍然比配置了1GB innodb_buffer_pool_大小的RDS快，而且两者的执行计划是相同的

好的，试试这个：

select count(1) from special_cargos FORCE INDEX (PRIMARY);

您能否提供以下内容的输出：

SHOW CREATE TABLE special_cargos;
SHOW GLOBAL VARIABLES LIKE 'innodb_buffer_pool_size';
EXPLAIN select count(special_cargo_id) from special_cargos;

在RDS和您的非RDS实例上

假设

special\u cargo\u id

我想到了两种可能的解释：

1）在RDS上，您没有定义为PK的

特殊货物id

2） RDS出于某种原因选择不使用索引（比较

EXPLAIN

输出将确认是否发生这种情况）

编辑：

编辑2：

哇-那么VPS只配置了128MB的innodb_buffer_pool_大小，它的运行速度仍然比配置了1GB innodb_buffer_pool_大小的RDS快，而且两者的执行计划是相同的

好的，试试这个：

select count(1) from special_cargos FORCE INDEX (PRIMARY);

这里有两个方面的问题。在IMO中，一个更重要的方面是查询——它很糟糕。它进行完全索引扫描（是的，主索引也是索引）。它的性能可以线性扩展而不是更好，并且需要B+树的nlog（n）

第二方面。为什么执行时间不同。它可能与缓存有关（在DO的情况下，查询是从缓冲池提供的，而在RDS from disk（=EBS））中）。它可以与MySQL优化器相关（DO和RDS可以选择不同的索引来服务查询主索引，而不是较小的辅助索引）。但由于查询本身存在问题，所有这些都无关紧要。

第二方面。为什么执行时间不同。它可能与缓存有关（在DO的情况下，查询是从缓冲池提供的，而在RDS from disk（=EBS））中）。它可以与MySQL优化器相关（DO和RDS可以选择不同的索引来服务查询主索引，而不是较小的辅助索引）。但是由于查询本身的问题，所有这些都无关紧要。

1GB的缓冲池容量在只有2GB的RAM的情况下非常高。也许那个系统正在激烈地交换

把它降到200米，看看它跑得有多快

看看他们是否有监控交换使用的方法。

1GB的缓冲池在只有2GB的RAM时非常危险。也许那个系统正在激烈地交换

把它降到200米，看看它跑得有多快

看看他们是否有办法监控交换的使用情况。

Hi，你能提供更多关于这些规格的详细信息吗？Hi，它们都有2GB的RAM和2vCPU，我不认为它们之间有60000%的差异Hi，RDS的实例类型？你可能忘了在RDS数据库上创建索引吗？Hi，您在导入时可以检查一下BurstBalance值吗？您好，您可以提供更多关于这些规格的详细信息吗？您好，它们都有2GB的RAM和2vCPU，我不认为它们之间有60000%的差异Hi，RDS的实例类型？您可能忘了在RDS数据库上创建索引吗？您好，你能在导入时检查一下BurstBalance值吗？刚刚检查过。我的脑子有点乱。我知道RDS的速度很慢，但这远远不够慢，这只是在某个地方被彻底破坏了……从特殊货物力量指数（主要）中选择计数（1）；这也是在同一时间出现的是“从特种货物力量指数（INDEX_special_cargos）中选择计数（*）”；“更快吗？@Christian 48秒…：/<代码>主将比