Optymalizacja MySQL

[cabana 15]

Witajcie

Potrzebuje zoptymalizować serwer MySQL

Ogólnie zapytań jest śr 3k / s czasami zdarzają się skoki 7-8k/s i serwer zdycha.

tzn 8 rdzeni 100% CPU

Proszę o jakieś wskazówki

 

my.cnf

#tmp_table_size
# The MySQL database server configuration file.
#
# You can copy this to one of:
# - "/etc/mysql/my.cnf" to set global options,
# - "~/.my.cnf" to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with --help to get a list of available options and with
# --print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
 
# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain "#" chars...
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[client]
#bind-address = 127.0.0.1
port            = 3306
socket          = /var/run/mysqld/mysqld.sock
 
# Here is entries for some specific programs
# The following values assume you have at least 32M ram
 
# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket          = /var/run/mysqld/mysqld.sock
nice            = 0
 
[mysqld]
#
# * Basic Settings
#
user            = mysql
#pid-file        = /var/run/mysqld/mysqld.pid
#socket          = /var/run/mysqld/mysqld.sock
 
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
 
 
port            = 3306
basedir         = /usr
datadir         = /var/lib/mysql
tmpdir          = /tmp
language        = /usr/share/mysql/english
skip-external-locking
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address            = localhost
#replikacja
server-id = 1
#log-bin = /home/log/mysql/mysql-bin.log
#binlog-do-db = repostuj
 
#
# * Fine Tuning
#
key_buffer              = 4096M
 
 
max_heap_table_size =   128M
innodb_buffer_pool_size = 4096M
max_allowed_packet      = 64M
#thread_stack            = 16M
thread_cache_size       = 64M
table_open_cache        = 8192
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover         = BACKUP
max_connections        = 1200
wait_timeout    = 30
interactive_timeout = 30
max_heap_table_size = 512M
tmp_table_size = 512M
 
sort_buffer_size = 16M
read_buffer_size = 4M
read_rnd_buffer_size = 16M
myisam_sort_buffer_size = 128M
 
 
table_cache            = 24576
#thread_concurrency     = 10
#
# * Query Cache Configuration
#
query_cache_limit       = 64M
query_cache_size        = 64M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file        = /home/log/mysql/mysql.log
#general_log             = 1
#
# Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
#
# Here you can see queries with especially long duration
#log_slow_queries       = /home/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
#       other settings you may need to change.
#server-id              = 1
#log_bin                        = /home/log/mysql/mysql-bin.log
expire_logs_days        = 10
max_binlog_size         = 100M
#binlog_do_db           = include_database_name
#binlog_ignore_db       = include_database_name
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
 
innodb_buffer_pool_size = 4G
innodb_additional_mem_pool_size = 128M
innodb_lock_wait_timeout = 30
 
 
[mysqldump]
quick
quote-names
max_allowed_packet      = 64M
 
[mysql]
#no-auto-rehash # faster start of mysql but no tab completition
 
[isamchk]
key_buffer              = 512M
 
#
# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with '.cnf', otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/
x
 
#sort_buffer_size = 128M

Edytowano Wrzesień 8, 2013 przez cabana (zobacz historię edycji)

[Gość Kamikadze]

Korzystałeś z mysqltuner? Optymalizowałeś bazę danych (strukturę i zapytania)? Warto czasem zerknąć do tego.