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 Mysql грузит диски (Vladimir) 27/02/2017 - 14:13:36
 Re: Mysql грузит диски (Alex) 28/02/2017 - 20:01:44
From: Vladimir - 27/02/2017 - 14:13:36
Subject:Mysql грузит диски
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Друзья, помогите пожалуйста с mysql, который грузит диски а я не могу найти причину. Лог с mysqltuner
>> MySQLTuner 1.7.0 - Major Hayden <major@mhtx.net>
>> Bug reports, feature requests, and downloads at http://mysqltuner.com/
>> Run with '--help' for additional options and output filtering
[--] Skipped version check for MySQLTuner script
[OK] Logged in using credentials from debian maintenance account.
[OK] Currently running supported MySQL version 5.5.54-0+deb8u1
[OK] Operating on 64-bit architecture
-------- Log file Recommendations ------------------------------------------------------------------
[--] Log file: /var/log/mysql.log(0B)
[OK] Log file /var/log/mysql.log exists
[OK] Log file /var/log/mysql.log is readable.
[!!] Log file /var/log/mysql.log is empty
[OK] Log file /var/log/mysql.log is smaller than 32 Mb
[OK] /var/log/mysql.log doesn't contain any warning.
[OK] /var/log/mysql.log doesn't contain any error.
[--] 0 start(s) detected in /var/log/mysql.log
[--] 0 shutdown(s) detected in /var/log/mysql.log
-------- Storage Engine Statistics -----------------------------------------------------------------
[--] Status: +ARCHIVE +BLACKHOLE +CSV -FEDERATED +InnoDB +MEMORY +MRG_MYISAM +MyISAM +PERFORMANCE_SCHEMA
[--] Data in InnoDB tables: 31G (Tables: 779)
[--] Data in MyISAM tables: 6G (Tables: 2731)
[OK] Total fragmented tables: 0
-------- Security Recommendations ------------------------------------------------------------------
[OK] There are no anonymous accounts for any database users
[OK] All database users have passwords assigned
[!!] There is no basic password file list!
-------- CVE Security Recommendations --------------------------------------------------------------
[--] Skipped due to --cvefile option undefined
-------- Performance Metrics -----------------------------------------------------------------------
[--] Up for: 15h 30m 8s (11M q [197.767 qps], 415K conn, TX: 154G, RX: 1G)
[--] Reads / Writes: 94% / 6%
[--] Binary logging is disabled
[--] Physical Memory : 31.4G
[--] Max MySQL memory : 15.1G
[--] Other process memory: 1.6G
[--] Total buffers: 9.4G global + 14.6M per thread (400 max threads)
[--] P_S Max memory usage: 0B
[--] Galera GCache Max memory usage: 0B
[OK] Maximum reached memory usage: 13.1G (41.68% of installed RAM)
[OK] Maximum possible memory usage: 15.1G (48.02% of installed RAM)
[OK] Overall possible memory usage with other process is compatible with memory available
[OK] Slow queries: 0% (847/11M)
[OK] Highest usage of available connections: 65% (260/400)
[OK] Aborted connections: 0.15% (607/415133)
[OK] Query cache is disabled by default due to mutex contention on multiprocessor machines.
[OK] Sorts requiring temporary tables: 1% (29K temp sorts / 2M sorts)
[!!] Joins performed without indexes: 57016
[!!] Temporary tables created on disk: 59% (442K on disk / 744K total)
[OK] Thread cache hit rate: 99% (774 created / 415K connections)
[OK] Table cache hit rate: 42% (3K open / 9K opened)
[OK] Open file limit used: 46% (4K/10K)
[OK] Table locks acquired immediately: 99% (11M immediate / 11M locks)
-------- Performance schema ------------------------------------------------------------------------
[--] Performance schema is disabled.
[--] Memory used by P_S: 0B
[--] Sys schema isn't installed.
-------- ThreadPool Metrics ------------------------------------------------------------------------
[--] ThreadPool stat is disabled.
-------- MyISAM Metrics ----------------------------------------------------------------------------
[!!] Key buffer used: 44.9% (482M used / 1B cache)
[OK] Key buffer size / total MyISAM indexes: 1.0G/833.4M
[OK] Read Key buffer hit rate: 100.0% (17B cached / 740K reads)
[OK] Write Key buffer hit rate: 100.0% (1B cached / 463K writes)
-------- InnoDB Metrics ----------------------------------------------------------------------------
[--] InnoDB is enabled.
[--] InnoDB Thread Concurrency: 0
[OK] InnoDB File per table is activated
[!!] InnoDB buffer pool / data size: 8.0G/31.4G
[!!] Ratio InnoDB log file size / InnoDB Buffer pool size (6.25 %): 256.0M * 2/8.0G should be equal 25%
[OK] InnoDB buffer pool instances: 8
[--] InnoDB Buffer Pool Chunk Size not used or defined in your version
[OK] InnoDB Read buffer efficiency: 99.99% (4658719402 hits/ 4659064688 total)
[OK] InnoDB Write log efficiency: 99.75% (17418093 hits/ 17462159 total)
[OK] InnoDB log waits: 0.00% (0 waits / 44066 writes)
-------- AriaDB Metrics ----------------------------------------------------------------------------
[--] AriaDB is disabled.
-------- TokuDB Metrics ----------------------------------------------------------------------------
[--] TokuDB is disabled.
-------- XtraDB Metrics ----------------------------------------------------------------------------
[--] XtraDB is disabled.
-------- RocksDB Metrics ---------------------------------------------------------------------------
[--] RocksDB is disabled.
-------- Spider Metrics ----------------------------------------------------------------------------
[--] Spider is disabled.
-------- Connect Metrics ---------------------------------------------------------------------------
[--] Connect is disabled.
-------- Galera Metrics ----------------------------------------------------------------------------
[--] Galera is disabled.
-------- Replication Metrics -----------------------------------------------------------------------
[--] Galera Synchronous replication: NO
[--] No replication slave(s) for this server.
[--] This is a standalone server.
-------- Recommendations ---------------------------------------------------------------------------
General recommendations:
MySQL started within last 24 hours - recommendations may be inaccurate
Enable the slow query log to troubleshoot bad queries
Adjust your join queries to always utilize indexes
Temporary table size is already large - reduce result set size
Reduce your SELECT DISTINCT queries without LIMIT clauses
Performance should be activated for better diagnostics
Consider installing Sys schema from https://github.com/mysql/mysql-sys
Variables to adjust:
join_buffer_size (> 12.0M, or always use indexes with joins)
performance_schema = ON enable PFS
innodb_buffer_pool_size (>= 31G) if possible.
innodb_log_file_size * innodb_log_files_in_group should be equals to 1/4 of buffer pool size (=4G) if possible.
Содержимое my.cnf
#
# 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
default-character-set = utf8
# 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]
log-error=/var/log/mysql.log
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
local-infile=0
innodb_file_per_table = 1
#
# * 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 = /dev/shm
lc-messages-dir = /usr/share/mysql
skip-external-locking
memlock
#skip-name-resolve
#
# 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
#
# * Fine Tuning
#
key_buffer = 1024M
#sort_buffer_size = 16M
max_allowed_packet = 16M
thread_stack = 192K
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover = BACKUP
max_connections = 400
open_files_limit = 10192
join_buffer_size = 12M
interactive_timeout = 900
wait_timeout = 900
#table_cache = 64
#thread_concurrency = 24
#
# * Query Cache Configuration
#
query_cache_limit = 2M
query_cache_size = 128M
query_cache_type = 0
table_open_cache = 4096
thread_cache_size = 32
#
# * 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
#
# 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
tmp_table_size = 256M
max_heap_table_size = 256M
innodb_buffer_pool_size = 8G
innodb_buffer_pool_instances = 8
innodb_log_file_size = 256M
#innodb_io_capacity = 2000
innodb_read_io_threads = 64
innodb_thread_concurrency = 0
innodb_write_io_threads = 64
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
[mysql]
#no-auto-rehash # faster start of mysql but no tab completition
[isamchk]
# key_buffer = 16M duplikat vverhu est takoi ze
#
# * 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/
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