Optymalizacja mysql - wolne, mimo dobrego sprzętu

[murgal 0]

Cześć,

Mam duży i stosunkowo mocny serwer (8 rdzeni, 8gb ram), służy on głównie jako serwer samby, lecz stoi na nim również apache i mysql do obsługi domeny wewnątrz sieci i trochę skryptów PHP/MySQL. Problem w tym, że jak baza się troszkę rozrosła apache chodzi... bardzo wolno, baza ma około 100-200MB, a mimo to serwer chodzi dość wolno, mysql żre po 3-4 GB ram. Użytkowników jest mało, ruch bardzo mały. Ma ktoś jakieś sugestie co do tej konfiguracji?

 

#
# 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]
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
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
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 = 127.0.0.1
#
# * Fine Tuning
#
key_buffer = 16M
key_buffer_size = 32MB
table_open_cache = 1200
max_allowed_packet = 16M
thread_stack = 192K
thread_cache_size = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover = BACKUP
#max_connections = 100
#table_cache = 64
#thread_concurrency = 10
#
# * Query Cache Configuration
#
query_cache_limit = 4M
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 = /var/log/mysql/mysql.log
#general_log = 1
#
# Error log - should be very few entries.
#
log_error = /var/log/mysql/error.log
#
# Here you can see queries with especially long duration
#slow_query_log_file = /var/log/mysql/mysql-slow.log
#slow_query_log = 1
#long_query_time = 2
#log_queries_not_using_indexes
join_buffer_size = 512K
# 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 = /var/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
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
[mysql]
#no-auto-rehash # faster start of mysql but no tab completition
[isamchk]
key_buffer = 32M
#
# * 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/

[_Maciej 42]

Może to Ci pomoże.

[murgal 0]

Wykonałem zalecane rzeczy dzięki mysqltuner, praktycznie żadnej zmiany. Dzisiaj będę walczył z optymalizacja Apache...

[Gość Kamikadze]

Sprawdź slow query

[murgal 0]

Według slow query po chwilowym pochodzeniu po "wolnych" skryptach mam jedynie coś takiego:

 

 

 

# Time: 150716 19:40:46
# User@Host: debian-sys-maint[debian-sys-maint] @ localhost []
# Query_time: 1.202535  Lock_time: 0.000192 Rows_sent: 0  Rows_examined: 572
SET timestamp=1437068446;
select count(*) into @discard from `information_schema`.`PARTITIONS`;

Według slow query po chwilowym pochodzeniu po "wolnych" skryptach mam jedynie coś takiego:

 

 

 

# Time: 150716 19:40:46
# User@Host: debian-sys-maint[debian-sys-maint] @ localhost []
# Query_time: 1.202535  Lock_time: 0.000192 Rows_sent: 0  Rows_examined: 572
SET timestamp=1437068446;
select count(*) into @discard from `information_schema`.`PARTITIONS`;