MySQL CPU Kullanımı my.cnf optimizasyonu

[teneke]

Sunucu core2 4300
2 GB ram

/etc/my.cnf

[mysqld]
set-variable=local-infile=0
max_connections = 500
key_buffer = 512M
table_cache = 512
thread_cache_size = 384
tmp_table_size = 64M
max_heap_table_size = 64M
max_allowed_packet = 64M
bulk_insert_buffer_size = 8M
query_cache_size = 32M
query_cache_type = 1
default-storage-engine = MyISAM
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
old_passwords=1

[mysql.server]
user=mysql
basedir=/var/lib

[mysqld_safe]
err-log=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid



top -n1

Tasks: 92 total, 1 running, 91 sleeping, 0 stopped, 0 zombie
Cpu(s): 2.5% us, 1.2% sy, 0.7% ni, 94.8% id, 0.8% wa, 0.0% hi, 0.0% si
Mem: 2066780k total, 1143852k used, 922928k free, 125628k buffers
Swap: 4192956k total, 0k used, 4192956k free, 655932k cached


Not:Ram Kullanýmý çok Fazla

[TaMAvRa]

Bu Server de Bu config için tavsiye edebilceðin birþey varmýdýr iyinet... Vaktin olurda bakabilirsen þimdiden teþekkürler...

# Example MySQL config file for very large systems.
#
# This is for a large system with memory of 1G-2G where the system runs mainly
# MySQL.
#
# 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.
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.

# The following options will be passed to all MySQL clients
[client]
password	= *********
port		= ****
socket		= /var/lib/mysql/mysql.sock
[mysqld]
old_passwords = 1
datadir = /var/lib/mysql
# Here follows entries for some specific programs

# The MySQL server
port		= ****
socket		= /var/lib/mysql/mysql.sock
skip-locking
skip-innodb
key_buffer = 256M
max_allowed_packet = 2M
table_cache = 1
sort_buffer_size = 3M
read_buffer_size = 4M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 16
query_cache_size = 32M
thread_stack = 8M
connect_timeout = 6
max_connections = 256
max_connect_errors = 10000
record_buffer=8M
long_query_time=4
wait_timeout=30
interactive_timeout=30
thread_cache = 100
key_buffer_size = 1M



# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 4
myisam_sort_buffer_size=64M

# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
# 
#skip-networking

# Replication Master Server (default)
# binary logging is required for replication
log-bin

# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id	= 1

# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
#    the syntax is:
#
#    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
#    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
#    where you replace <host>, <user>, <password> by quoted strings and
#    <port> by the master's port number (3306 by default).
#
#    Example:
#
#    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
#    MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
#    start replication for the first time (even unsuccessfully, for example
#    if you mistyped the password in master-password and the slave fails to
#    connect), the slave will create a master.info file, and any later
#    change in this file to the variables' values below will be ignored and
#    overridden by the content of the master.info file, unless you shutdown
#    the slave server, delete master.info and restart the slaver server.
#    For that reason, you may want to leave the lines below untouched
#    (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id       = 2
#
# The replication master for this slave - required
#master-host     =   <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user     =   <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password =   <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port     =  <port>
#
# binary logging - not required for slaves, but recommended
#log-bin

# Point the following paths to different dedicated disks
#tmpdir		= /tmp/		
#log-update 	= /path-to-dedicated-directory/hostname

# Uncomment the following if you are using BDB tables
#bdb_cache_size = 384M
#bdb_max_lock = 100000

# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/lib/mysql/
#innodb_data_file_path = ibdata1:2000M;ibdata2:10M: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
#innodb_buffer_pool_size = 384M
#innodb_additional_mem_pool_size = 20M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 100M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
safe-updates

[isamchk]
key_buffer = 64M
sort_buffer_size = 64M
read_buffer = 2M
write_buffer = 2M

[myisamchk]
key_buffer = 64M
sort_buffer_size =64M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

[mysql.server]
user=mysql
basedir=/var/lib

[mysqld_safe]
err-log=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pidlog/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

[kutver]

Benim sunucumda þuan 3gb ram mevcut ve sorun yaþýyorum nasýl mysql yapabilirim. Sunucuda birtane 30bin üyeli vbullettin forum ve 1 tane joomla site bulunmakta onun dýþýnda 2tane ufak site var. Yardýmlarýnýz için þimdiden teþekkürler

PHP- Kodu:

Processor Information 
Intel(R) Pentium(R) D CPU 2.80GHz
cache size: 2048 KB
Memory Information 
Memory: 3372292k/3406784k available (1882k kernel code, 33620k reserved, 761k data, 188k init, 2489280k highmem) 


my.cnf içeriði

PHP- Kodu:

[mysqld]
socket = /var/lib/mysql/mysql.sock
skip-locking
skip-innodb
key_buffer = 384M
table_cache = 512
max_connections = 1000
query-cache-type = 1
query-cache-size = 64M
max_allowed_packet=64M
wait_timeout=30
safe-show-database
set-variable=local-infile=0
sort_buffer=512K
myisam_sort_buffer_size=8M
query_cache_limit = 8M
thread_cache_size = 128
max_allowed_packet = 32M
thread_concurrency=4

[safe_mysqld]
err-log=/var/lib/mysql/mysqld.log

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[isamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[myisamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M 


iptables --list -n | wc -l
çýktýsý: 42

[iyinet]

kutver, mysql replication kullaniyormusun?

[kutver]

mysql replication ile ilgili birþey kullanmýyorum. fakat sunucuyu takip ettiðimde

Current Memory Usage
total used free shared buffers cached
Mem: 3374300 977596 2396704 0 9152 350736
-/+ buffers/cache: 617708 2756592
Swap: 2031608 229272 1802336
Total: 5405908 1206868 4199040


ram az kullanýp swapa düþüyor...

[iyinet]

uname -a; uptime;
ciktisini verirmisin.

[kutver]

2.6.9-55.ELsmp #1 SMP Wed May 2 14:28:44 EDT 2007 i686 i686 i386 GNU/Linux
20:15:31 up 54 min, 1 user, load average: 0.13, 0.29, 0.47

restarttan sonra bir müddet iyi gidiyor. þuan normal halleri

[iyinet]

Mysql ayarlarin zaten fena degildi, sanirmi CPU yetersiz kaliyor.

Serverin performansini inceletebilirsin, sorun baska yerlerde olabilir.

Makina 2 forumu kaldirmayabilir.

Ben yinede my.cnf de oynamalar yaptim.

[mysqld]
socket = /var/lib/mysql/mysql.sock
skip-locking
skip-innodb
skip-name-resolve
key_buffer = 256M
table_cache = 2500
max_connections = 1000
query_cache_size = 32M
query_cache_type = 1
query_cache_limit = 4M
max_allowed_packet= 32M
safe-show-database
myisam_sort_buffer_size=8M
thread_cache_size = 384
low_priority_updates = 1

[safe_mysqld]
err-log=/var/lib/mysql/mysqld.log

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[isamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[myisamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[kutver]

Teþekkürler forumdaki yazýlarýný okuyup ona göre kendim düzenlemiþtim. fakat performans alamayýnca sana danýþmak istedim. Tekrar teþekkürler olmadý ML 115 2gb ramli bir makinaya geçerim. WHM kullanmayý düþünmüyorum debian ve plesk eski version kullanayým diyorum yeni makinaya geçmek zorunda kalýrsam.

[kutver]

Hatayý buldum galiba þimdi onu düzeltecem. forumun birinde session kýsmýnda http://www.mannweiler.ch/n? bu adresi görüyorum siteye girdiðimde de bi script var. xss saldýrýsýna neden oluyor herhalde ara ara ondan CPU yükseliyor olabilir