我继承了一个windows服务器（2016），我们有一个不是我写的专有软件，它使用的是mysql数据库。我是sql的新手。
有一个客户端软件，将连接到服务器随机全天。每天有10到200台不同的计算机登录到这个服务器，这取决于我们有多忙。
我们使用一个vps，带有4个虚拟内核、8gb的ram和一个204gb的本地磁盘。
似乎每12-18个小时，我们的软件就会出现挂起的问题，任务管理器就会显示mysqld 99-100%的cpu使用率
在我强制退出软件，然后重新启动mysql服务之前，它不会再正常工作。
这是我追踪到的先前设置的设置文件。
my.ini设置：

[client]
port=3306
[mysql]
no-beep=
default-character-set=utf8
[mysqld]
port=3306
datadir=C:/ProgramData/MySQL/MySQL Server 5.7\Data
character-set-server=utf8
default-storage-engine=INNODB
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
log-output=FILE
general-log=0
general_log_file="xyz.log"
slow-query-log=1
slow_query_log_file="xyz-slow.log"
long_query_time=10
log-error="xyz.err"
server-id=1
secure-file-priv="C:/ProgramData/MySQL/MySQL Server 5.7/Uploads"
max_connections=151
table_open_cache=2000
tmp_table_size=249M
thread_cache_size=10
myisam_max_sort_file_size=100G
myisam_sort_buffer_size=486M
key_buffer_size=8M
read_buffer_size=64K
read_rnd_buffer_size=256K
innodb_flush_log_at_trx_commit=1
innodb_log_buffer_size=1M
innodb_buffer_pool_size=8M
innodb_log_file_size=48M
innodb_thread_concurrency=13
innodb_autoextend_increment=64
innodb_buffer_pool_instances=8
innodb_concurrency_tickets=5000
innodb_old_blocks_time=1000
innodb_open_files=300
innodb_stats_on_metadata=0
innodb_file_per_table=1
innodb_checksum_algorithm=0
back_log=80
flush_time=0
join_buffer_size=256K
max_allowed_packet=4M
max_connect_errors=100
open_files_limit=4161
sort_buffer_size=256K
table_definition_cache=1400
binlog_row_event_max_size=8K
sync_master_info=10000
sync_relay_log=10000
sync_relay_log_info=10000

下面是mysqltuner for windows的图片和结果：mysql\u tuner
只是想看看我们能做些什么来缓解这个问题。看来我们需要运行optimize来修复表的碎片。
它还显示了0%缓存的23m选择。
innodb数据大小/缓冲池为687m/8m
任何帮助都将不胜感激。
[编辑]
我刚刚在另一个线程中运行了以下命令：

SELECT CEILING(Total_InnoDB_Bytes*1.6/POWER(1024,3)) RIBPS FROM
(SELECT SUM(data_length+index_length) Total_InnoDB_Bytes
FROM information_schema.tables WHERE engine='InnoDB') A;

我得到的值是2，所以我应该设置 innodb_buffer_pool_size=2G ? SET GLOBAL innodb_buffer_pool_size=2*1024*1024*1024; 会没事的。你有8gb的机器。mysql需要一段时间来动态地实现这一点。入住30分钟 SELECT @@innodb_buffer_pool_size; 看看它是否完成了你的动态请求。
以下是show create table recipes的外观：

mysql> USE xyz; SHOW CREATE TABLE recipes;
Database changed
+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table   | Create Table                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| recipes | CREATE TABLE `recipes` (
  `id` int(11) NOT NULL,
  `name` varchar(64) NOT NULL,
  `dname` varchar(64) NOT NULL DEFAULT '',
  `descrpara` text NOT NULL,
  `category` varchar(32) NOT NULL,
  `costperserving` float NOT NULL DEFAULT '0',
  `batchsize` int(11) NOT NULL DEFAULT '1',
  `servname` varchar(32) NOT NULL DEFAULT 'Serving',
  `rectype` tinyint(4) NOT NULL DEFAULT '0',
  `servweight` float NOT NULL DEFAULT '0',
  `servflvol` float NOT NULL DEFAULT '0',
  `flags` tinyint(4) NOT NULL DEFAULT '0',
  `isapproved` tinyint(4) NOT NULL DEFAULT '0',
  `isapproved2` tinyint(4) NOT NULL DEFAULT '0',
  `tags` varchar(128) NOT NULL DEFAULT '',
  `allrestr` tinyint(4) NOT NULL DEFAULT '0',
  `numsides` tinyint(4) NOT NULL DEFAULT '0',
  `utensils` varchar(64) NOT NULL DEFAULT '',
  `active` tinyint(4) NOT NULL DEFAULT '1',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

再说一次，我是一个超级新手，但是有没有可能我们的my.ini文件显示了一个默认的字符集utf8，但是在这个文件中，它显示的是拉丁文1？
我会在24小时后再更新
粘贴箱链接
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mysqltuner的正常运行时间超过1天。这也是在将innodb\u buffer\u pool\u size=8m更改为1g之后。从那时起，mysqld的总ram使用量约为1.25g。

MySQL Tuner 0.8.3 - Peter Chapman <peter@conglomo.co.nz>
Performing tests on localhost:3306 at Friday, 16 November 2018 6:13:41 AM
Currently running supported MySQL version 5.7.24-log
Archive Engine Installed
Berkeley DB Engine Not Installed
Federated Engine Not Installed
InnoDB Engine Installed
ISAM Engine Not Installed
NDBCLUSTER Engine Not Installed
Data in InnoDB tables: 687M (Tables: 257)
Data in MyISAM tables: 6M (Tables: 32)
Total fragmented tables: 67
All database users have passwords assigned
Up for: 1d 10h 33m 15s (49M q [397.000 qps], 38K conn, TX: 43G, RX: 3G)
Reads / Writes: 99% / 1%
Total buffers: 1.0G global + 1.1M per thread (151 max threads)
Maximum possible memory usage: 1.2G (14% of installed RAM)
Slow queries: 1% (4/49M)
Highest usage of available connections: 26% (38/151)
Key buffer size / total MyISAM indexes: 8.0M/1.0M
Key buffer hit rate: 98% (630 cached / 9 reads)
Query cache efficiency: 0% (0 cached / 47M selects)
Query cache prunes per day: 0
Sorts requiring temporary tables: 1% (2K temp sorts / 377K sorts)
Joins performed without indexes: 13254
Temporary tables created on disk: 3% (2K on disk / 79K total)
Thread cache hit rate: 99% (41 created / 38K connections)
Table cache hit rate: 26% (2K open / 7K opened)
Open file limit used: 0% (10/6K)
Table locks acquired immediately: 100% (682 immediate / 682 locks)
InnoDB data size / buffer pool: 687.0M/1.0G
Run OPTIMIZE TABLE to defragment tables for better performance
Adjust your join queries to always utilize indexes
query_cache_limit (> 1M, or use smaller result sets)
join_buffer_size (> 256.0K, or always use indexes with joins)
Scan Completed at Friday, 16 November 2018 6:13:44 AM

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