简单办理mysql占用资源过大的问题[网络技术]
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在 linux 下,常常呈现的情形就是利用 VBB 这种论坛系统时,呈现迟钝,mysql 假死状况,sleep进程过量等等现像.招致几十个用户,就把系统搞定了.
其实这是 mysql 配置上的问题, 默许的 linux 中, mysql 的配置是 my-large.cnf 配置,该配置合适大型服务器.有高内存,比方2G,4G内存的,合适利用,而普通512M内存 的就不行了.它会占用512M内存来保存系统 mysql 的进程,这些进程长期堆质,并不释放,招致系统迟钝.所以,把配置改变成为 my-small.cnf ,小型配置便可以了.它的配置以下:
# Example mysql config file for small systems.
#
# This is for a system with little memory (<= 64M) where MySQL is only used
# from time to time and it's important that the mysqld deamon
# doesn't use much resources.
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is /var/lib/mysql) or
# ~/.my.cnf to set user-specific options.
#
# One can in this file use all long options that the program supports.
# If you want to know which options a program support, run the program
# with --help option.
# The following options will be passed to all MySQL clients
[client]
#password = 你的密码
port = 3306
socket = /tmp/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port = 3306
socket = /tmp/mysql.sock
skip-locking
set-variable = key_buffer=16K
set-variable = max_allowed_packet=1M
set-variable = thread_stack=64K
set-variable = table_cache=4
set-variable = sort_buffer=64K
set-variable = net_buffer_length=2K
server-id = 1
# Uncomment the following if you want to log updates
#log-bin
# Uncomment the following if you are NOT using BDB tables
#skip-bdb
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/lib/mysql/
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /var/lib/mysql/
#innodb_log_arch_dir = /var/lib/mysql/
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#set-variable = innodb_buffer_pool_size=16M
#set-variable = innodb_additional_mem_pool_size=2M
# Set .._log_file_size to 25 % of buffer pool size
#set-variable = innodb_log_file_size=5M
#set-variable = innodb_log_buffer_size=8M
#innodb_flush_log_at_trx_commit=1
#set-variable = innodb_lock_wait_timeout=50
[mysqldump]
quick
set-variable = max_allowed_packet=16M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[isamchk]
set-variable = key_buffer=8M
set-variable = sort_buffer=8M
[myisamchk]
set-variable = key_buffer=8M
set-variable = sort_buffer=8M
[mysqlhotcopy]
interactive-timeout
以上配置充足 你的系统高速运行 mysql 了,sleep的进程,很快就被回收,不占资源,这非常合适小型服务器.普通个人托管的服务器也很合适.
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