Muchos de los procesos de suspensión mysql

Question

Todavía estoy teniendo problemas con mi servidor mysql. Parece que desde que lo optimicé, las tablas estaban creciendo y ahora a veces es muy lento otra vez. No tengo idea de cómo optimizar más.

mySQL server tiene 48GB de RAM y mysqld usa aproximadamente 8, la mayoría de las tablas son innoDB.

El sitio tiene alrededor de 2000 usuarios en línea. También explico cada consulta y cada una de ellas está indexada.

procesos de MySQL: http://www.pik.ba/mysqlStanje.php

my.cnf: "SELECT * nombredetabla"

# 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   = 10.100.27.30 
# 
# * Fine Tuning 
# 
key_buffer    = 64M 
key_buffer_size = 512M 
max_allowed_packet  = 16M 
thread_stack   = 128K 
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  = 1000 
table_cache   = 1000 
join_buffer_size  = 2M 
tmp_table_size   = 2G 
max_heap_table_size  = 2G 
innodb_buffer_pool_size = 3G 
innodb_additional_mem_pool_size = 128M 
innodb_log_file_size = 100M 
log-slow-queries  = /var/log/mysql/slow.log 
sort_buffer_size  = 5M 
net_buffer_length  = 5M 
read_buffer_size  = 2M 
read_rnd_buffer_size = 12M 
thread_concurrency  = 10 
ft_min_word_len = 3 
#thread_concurrency  = 10 
# 
# * Query Cache Configuration 
# 
query_cache_limit  = 1M 
query_cache_size  = 512M 
# 
# * 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. 
# 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 
# 
# * 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! 
# The files must end with '.cnf', otherwise they'll be ignored. 
# 
!includedir /etc/mysql/conf.d/ 

Answer 1

I refrescado en su página de lista de procesos un par de veces y muy a menudo las consultas vi incluyen

¿Necesita cada columna de esa tabla? Si no, eso podría ayudar.

A menos que su servidor esté restringido por los recursos, no me preocuparía demasiado sobre los procesos de sueño. Por lo general, no consumen muchos recursos. Sin embargo, si realmente desea establecer manualmente la cantidad de tiempo antes de que se eliminen, puede hacer lo siguiente en su archivo de configuración:

[mysqld] 
wait_timeout=20