SV-blog: El conocimiento debe ser GPL

El caso: Vps con sistema operativo Debian, 2gb de ram y 2 ghz de cpu en leaseweb.El consumo de ram no sube del 50%,pero el uso de cpu sube hasta el 95% con 200 visitas simultaneas en un foro smf.

la bitacora

la posible solucion:instale cacheadores de php y pagespeed, pero no dio ningun resultado,al contrario afecto el uso de recursos,al grado que tenia que reiniciar manualmente el vps cada 12 horas. al final desinstale las extensiones y lo deje todo como al principio.

Vamos de nuevo:ahorita estoy experimentado con cambiar las configuraciones por defecto de apache y mysql,haber como funcionan los cambios

primer cambio apache:

# prefork MPM
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# MaxClients: maximum number of server processes allowed to start
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule mpm_prefork_module>
StartServers          2
MinSpareServers       3
MaxSpareServers      10
MaxClients          30
MaxRequestsPerChild   1000
</IfModule>

 

Resultados:

No sirvio de nada, agrabao mas el problema

Vamos de nuevo…

Segundo cambio:cambiar al configuracion de my.cnf

Se cambio laconfgiuracion del archivo my.cnf,siguiendo las recomendaciones que proponia el script mysqltuner.pl.

Resultados

Ha mejorado el cosnumo de cpu,ahora consume menos del 50%.

dejo la configuracion del 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

# 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]
local-infile=0
#
# * 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        = 16M
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            = 128
#thread_concurrency     = 10
#
# * Query Cache Configuration
#
query_cache_limit    = 1M
query_cache_size        = 32M
#
# * 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 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    = /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.
# 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        = 16M

#
# * 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/