Hallo Community,
meine MySQL sprengt aktuell meinen Server bisschen und ich bräuchte bisschen hilfe in Sachen Tuning.
Habe mal die tuning-primer.sh laufen lassen
meine my.cnf sieht aktuell so aus:
Server:
CPU: Intel(R) Celeron(R) CPU 2.66GHz
Ram: 1GB
top auszug:
Ist ja doch relativ hoch. Auf dem Server wird Hosting betrieben. Besucherzahlen schwanken stetig. Falls Ihr noch mehr Infos braucht.. einfach schreiben... Vielen Dank soweit.
MfG
FraggDieb
meine MySQL sprengt aktuell meinen Server bisschen und ich bräuchte bisschen hilfe in Sachen Tuning.
Habe mal die tuning-primer.sh laufen lassen
Code:
SLOW QUERIES
The slow query log is NOT enabled.
Current long_query_time = 2 sec.
You have 68 out of 7427 that take longer than 2 sec. to complete
Your long_query_time seems to be fine
BINARY UPDATE LOG
The binary update log is enabled
WORKER THREADS
Current thread_cache_size = 32
Current threads_cached = 1
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine
MAX CONNECTIONS
Current max_connections = 100
Current threads_connected = 4
Historic max_used_connections = 6
The number of used connections is 6% of the configured maximum.
You are using less than 10% of your configured max_connections.
Lowering max_connections could help to avoid an over-allocation of memory
See "MEMORY USAGE" section to make sure you are not over-allocating
MEMORY USAGE
Max Memory Ever Allocated : 33 M
Configured Max Per-thread Buffers : 72 M
Configured Max Global Buffers : 29 M
Configured Max Memory Limit : 101 M
Physical Memory : 1000.22 M
Max memory limit seem to be within acceptable norms
KEY BUFFER
Current MyISAM index space = 11 M
Current key_buffer_size = 15 M
Key cache miss rate is 1 : 35
Key buffer fill ratio = 2.00 %
Your key_buffer_size seems to be too high.
Perhaps you can use these resources elsewhere
QUERY CACHE
Query cache is enabled
Current query_cache_size = 4 M
Current query_cache_used = 2 M
Current query_cache_limit = 1 M
Current Query cache Memory fill ratio = 50.96 %
Current query_cache_min_res_unit = 4 K
MySQL won't cache query results that are larger than query_cache_limit in size
SORT OPERATIONS
Current sort_buffer_size = 32 K
Current read_rnd_buffer_size = 28 K
Sort buffer seems to be fine
JOINS
Current join_buffer_size = 512.00 K
You have had 77 queries where a join could not use an index properly
You should enable "log-queries-not-using-indexes"
Then look for non indexed joins in the slow query log.
If you are unable to optimize your queries you may want to increase your
join_buffer_size to accommodate larger joins in one pass.
Note! This script will still suggest raising the join_buffer_size when
ANY joins not using indexes are found.
OPEN FILES LIMIT
Current open_files_limit = 1134 files
The open_files_limit should typically be set to at least 2x-3x
that of table_cache if you have heavy MyISAM usage.
You currently have open more than 75% of your open_files_limit
You should set a higher value for open_files_limit in my.cnf
TABLE CACHE
Current table_cache value = 512 tables
You have a total of 1149 tables
You have 512 open tables.
Current table_cache hit rate is 19%, while 100% of your table cache is in use
You should probably increase your table_cache
TEMP TABLES
Current max_heap_table_size = 16 M
Current tmp_table_size = 32 M
Of 290 temp tables, 4% were created on disk
Effective in-memory tmp_table_size is limited to max_heap_table_size.
Created disk tmp tables ratio seems fine
TABLE SCANS
Current read_buffer_size = 12 K
Current table scan ratio = 68963 : 1
You have a high ratio of sequential access requests to SELECTs
You may benefit from raising read_buffer_size and/or improving your use of indexes.
TABLE LOCKING
Current Lock Wait ratio = 1 : 179
You may benefit from selective use of InnoDB.
If you have long running SELECT's against MyISAM tables and perform
frequent updates consider setting 'low_priority_updates=1'
If you have a high concurrency of inserts on Dynamic row-length tables
consider setting 'concurrent_insert=2'.meine my.cnf sieht aktuell so aus:
Code:
#
# 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
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 = 127.0.0.1
#
# * Fine Tuning
#
key_buffer = 15M
net_buffer_length = 8K
sort_buffer_size = 32K
myisam_sort_buffer_size = 32K
read_buffer_size = 16K
read_rnd_buffer_size = 32K
join_buffer_size = 512K
max_allowed_packet = 16M
thread_stack = 128K
thread_cache_size = 32
max_connections = 30
table_cache = 512
#thread_concurrency = 10
#
# * Query Cache Configuration
#
query_cache_limit = 1M
query_cache_size = 4M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
#log = /var/log/mysql/mysql.log
#
# Error logging goes to syslog. This is a Debian improvement :)
#
# Here you can see queries with especially long duration
#log_slow_queries = /var/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.
#server-id = 1
log_bin = /var/log/mysql/mysql-bin.log
# WARNING: Using expire_logs_days without bin_log crashes the server! See README.Debian!
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
#
# * BerkeleyDB
#
# Using BerkeleyDB is now discouraged as its support will cease in 5.1.12.
skip-bdb
#
# * 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!
# You might want to disable InnoDB to shrink the mysqld process by circa 100MB.
#skip-innodb
#
# * 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 = 16M
#
# * NDB Cluster
#
# See /usr/share/doc/mysql-server-*/README.Debian for more information.
#
# The following configuration is read by the NDB Data Nodes (ndbd processes)
# not from the NDB Management Nodes (ndb_mgmd processes).
#
# [MYSQL_CLUSTER]
# ndb-connectstring=127.0.0.1
#
# * IMPORTANT: Additional settings that can override those from this file!
#
!includedir /etc/mysql/conf.d/Server:
CPU: Intel(R) Celeron(R) CPU 2.66GHz
Ram: 1GB
top auszug:
Code:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
16349 mysql 20 0 125m 36m 5500 S 94.6 3.6 10:39.76 mysqldIst ja doch relativ hoch. Auf dem Server wird Hosting betrieben. Besucherzahlen schwanken stetig. Falls Ihr noch mehr Infos braucht.. einfach schreiben... Vielen Dank soweit.
MfG
FraggDieb
Hatte gleiche Probleme mal mit Pidgin. Aber leider ist mein Laptop aus Schulischen/Beruflichen Gründen wieder auf WindowsXP und meine Linux-Partition liegt auf Grundeis.