请问怎么修改mysql连接数

shaitou

服务器    内存 6G     cpu  e6500   2.9

网站很慢 想修改一下 连接数  百度了一下 发现 我  /etc/my.cnf  没有那个参数

1. # Example MySQL config file for medium systems.
   
2. #
   
3. # This is for a system with little memory (32M - 64M) where MySQL plays
   
4. # an important part, or systems up to 128M where MySQL is used together with
   
5. # other programs (such as a web server)
   
6. #
   
7. # MySQL programs look for option files in a set of
   
8. # locations which depend on the deployment platform.
   
9. # You can copy this option file to one of those
   
10. # locations. For information about these locations, see:
    
11. # http://dev.mysql.com/doc/mysql/en/option-files.html
    
12. #
    
13. # In this file, you can use all long options that a program supports.
    
14. # If you want to know which options a program supports, run the program
    
15. # with the "--help" option.
    
16. 
    
17. # The following options will be passed to all MySQL clients
    
18. [client]
    
19. #password        = your_password
    
20. port                = 3306
    
21. socket                = /tmp/mysql.sock
    
22. 
    
23. # Here follows entries for some specific programs
    
24. 
    
25. # The MySQL server
    
26. [mysqld]
    
27. port                = 3306
    
28. socket                = /tmp/mysql.sock
    
29. skip-external-locking
    
30. key_buffer_size = 16M
    
31. max_allowed_packet = 1M
    
32. table_open_cache = 64
    
33. sort_buffer_size = 512K
    
34. net_buffer_length = 8K
    
35. read_buffer_size = 256K
    
36. read_rnd_buffer_size = 512K
    
37. myisam_sort_buffer_size = 8M
    
38. 
    
39. # Don't listen on a TCP/IP port at all. This can be a security enhancement,
    
40. # if all processes that need to connect to mysqld run on the same host.
    
41. # All interaction with mysqld must be made via Unix sockets or named pipes.
    
42. # Note that using this option without enabling named pipes on Windows
    
43. # (via the "enable-named-pipe" option) will render mysqld useless!
    
44. #
    
45. #skip-networking
    
46. 
    
47. # Replication Master Server (default)
    
48. # binary logging is required for replication
    
49. #log-bin=mysql-bin
    
50. 
    
51. # binary logging format - mixed recommended
    
52. #binlog_format=mixed
    
53. 
    
54. # required unique id between 1 and 2^32 - 1
    
55. # defaults to 1 if master-host is not set
    
56. # but will not function as a master if omitted
    
57. server-id        = 1
    
58. 
    
59. # Replication Slave (comment out master section to use this)
    
60. #
    
61. # To configure this host as a replication slave, you can choose between
    
62. # two methods :
    
63. #
    
64. # 1) Use the CHANGE MASTER TO command (fully described in our manual) -
    
65. #    the syntax is:
    
66. #
    
67. #    CHANGE MASTER TO MASTER_HOST=, MASTER_PORT=,
    
68. #    MASTER_USER=, MASTER_PASSWORD= ;
    
69. #
    
70. #    where you replace , ,  by quoted strings and
    
71. #     by the master's port number (3306 by default).
    
72. #
    
73. #    Example:
    
74. #
    
75. #    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
    
76. #    MASTER_USER='joe', MASTER_PASSWORD='secret';
    
77. #
    
78. # OR
    
79. #
    
80. # 2) Set the variables below. However, in case you choose this method, then
    
81. #    start replication for the first time (even unsuccessfully, for example
    
82. #    if you mistyped the password in master-password and the slave fails to
    
83. #    connect), the slave will create a master.info file, and any later
    
84. #    change in this file to the variables' values below will be ignored and
    
85. #    overridden by the content of the master.info file, unless you shutdown
    
86. #    the slave server, delete master.info and restart the slaver server.
    
87. #    For that reason, you may want to leave the lines below untouched
    
88. #    (commented) and instead use CHANGE MASTER TO (see above)
    
89. #
    
90. # required unique id between 2 and 2^32 - 1
    
91. # (and different from the master)
    
92. # defaults to 2 if master-host is set
    
93. # but will not function as a slave if omitted
    
94. #server-id       = 2
    
95. #
    
96. # The replication master for this slave - required
    
97. #master-host     =   
    
98. #
    
99. # The username the slave will use for authentication when connecting
    
100. # to the master - required
     
101. #master-user     =   
     
102. #
     
103. # The password the slave will authenticate with when connecting to
     
104. # the master - required
     
105. #master-password =   
     
106. #
     
107. # The port the master is listening on.
     
108. # optional - defaults to 3306
     
109. #master-port     =  
     
110. #
     
111. # binary logging - not required for slaves, but recommended
     
112. #log-bin=mysql-bin
     
113. 
     
114. # Uncomment the following if you are using InnoDB tables
     
115. #innodb_data_home_dir = /usr/local/mysql/var
     
116. #innodb_data_file_path = ibdata1:10M:autoextend
     
117. #innodb_log_group_home_dir = /usr/local/mysql/var
     
118. # You can set .._buffer_pool_size up to 50 - 80 %
     
119. # of RAM but beware of setting memory usage too high
     
120. #innodb_buffer_pool_size = 16M
     
121. #innodb_additional_mem_pool_size = 2M
     
122. # Set .._log_file_size to 25 % of buffer pool size
     
123. #innodb_log_file_size = 5M
     
124. #innodb_log_buffer_size = 8M
     
125. #innodb_flush_log_at_trx_commit = 1
     
126. #innodb_lock_wait_timeout = 50
     
127. 
     
128. [mysqldump]
     
129. quick
     
130. max_allowed_packet = 16M
     
131. 
     
132. [mysql]
     
133. no-auto-rehash
     
134. # Remove the next comment character if you are not familiar with SQL
     
135. #safe-updates
     
136. 
     
137. [myisamchk]
     
138. key_buffer_size = 20M
     
139. sort_buffer_size = 20M
     
140. read_buffer = 2M
     
141. write_buffer = 2M
     
142. 
     
143. [mysqlhotcopy]
     
144. interactive-timeout

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军哥 帮我看看  谢谢了

shaitou

lnmp   7.0  的

licess

在[mysqld]配置段添加：max_connections = 1000保存，重启MYSQL

hvbirder

再添加个max_user_connections=150

yuweitaocn

顶军歌啊。

还有一个就是可以去你的启动参数里面，加上这一个参数也可以的。。

yuweitaocn

max_user_connections=150
这一条是指每一个数据库共可以有多少个人同时连接，军哥的那一条是整个服务器的连接数，设置了上一个你这一条意义不大啊。

黑面包

没有加上

[mysqld]
set-variable=max_connections=1000
set-variable=max_user_connections=500
set-variable=wait_timeout=200

hamen

set-variable= 不要这段也行