Drupal的過高查詢時間在Drupal

Question

查詢我有一個Drupal 7個網站運行到下列服務器：

• 的Debian GNU/Linux的7.1
• 2個Intel多核CPU
• 的4Gb的內存

我正在試驗SQL查詢的時間太長，以及在從部署的站點觸發mysql查詢時CPU的嚴重高負載。

例如下面的查詢的時間超過20秒的平均來提供數據（直接在MySQL控制檯運行）：

SELECT DISTINCT node.nid AS nid, domain_source.domain_id AS domain_source_domain_id, field_data_field_date.delta AS field_data_field_date_delta, field_data_field_date.language AS field_data_field_date_language, field_data_field_date.bundle AS field_data_field_date_bundle, field_data_field_date.field_date_value AS field_data_field_date_field_date_value, field_data_field_date.field_date_value2 AS field_data_field_date_field_date_value2, field_data_field_date.field_date_rrule AS field_data_field_date_field_date_rrule, node.title AS node_title, node.language AS node_language, location.name AS location_name, 'node' AS field_data_field_date_node_entity_type, 'node' AS field_data_field_lieux_node_entity_type 
FROM 
node node 
LEFT JOIN field_data_field_date field_data_field_date ON node.nid = field_data_field_date.entity_id AND (field_data_field_date.entity_type = 'node' AND field_data_field_date.deleted = '0') 
LEFT JOIN domain_source domain_source ON node.nid = domain_source.nid 
LEFT JOIN field_data_field_date field_data_field_date2 ON node.nid = field_data_field_date2.entity_id AND (field_data_field_date2.entity_type = 'node' AND field_data_field_date2.deleted = '0') 
LEFT JOIN field_data_field_date field_data_field_date3 ON node.nid = field_data_field_date3.entity_id AND (field_data_field_date3.entity_type = 'node' AND field_data_field_date3.deleted = '0') 
LEFT JOIN location_instance location_instance ON node.vid = location_instance.vid 
LEFT JOIN location location ON location_instance.lid = location.lid 
INNER JOIN node_access na ON na.nid = node.nid 
WHERE (((node.status = '1') AND (node.type IN ('activite', 'evenements')) AND (domain_source.domain_id NOT IN ('6', '-5')) AND (DATE_FORMAT(ADDTIME(STR_TO_DATE(field_data_field_date2.field_date_value, '%Y-%m-%dT%T'), SEC_TO_TIME(3600)), '%Y-%m-%d') >= '2014-01-15' OR DATE_FORMAT(ADDTIME(STR_TO_DATE(field_data_field_date3.field_date_value2, '%Y-%m-%dT%T'), SEC_TO_TIME(3600)), '%Y-%m-%d') >= '2014-01-15'))AND((DATE_FORMAT(ADDTIME(STR_TO_DATE(field_data_field_date.field_date_value, '%Y-%m-%dT%T'), SEC_TO_TIME(3600)), '%Y-%m-%d') >= '2014-01-15') OR (DATE_FORMAT(ADDTIME(STR_TO_DATE(field_data_field_date.field_date_value2, '%Y-%m-%dT%T'), SEC_TO_TIME(3600)), '%Y-%m-%d') >= '2014-01-15')))AND(((na.gid = '0') AND (na.realm = 'all'))OR((na.gid = '0') AND (na.realm = 'domain_site'))OR((na.gid = '6') AND (na.realm = 'domain_id'))OR((na.gid = '1') AND (na.realm = 'view_unpublished_activite_content'))OR((na.gid = '1') AND (na.realm = 'view_unpublished_image_d_ent_te_content')))AND (na.grant_view >= '1') 
ORDER BY field_data_field_date_field_date_value ASC 
LIMIT 5 OFFSET 0; 

節點表的大小是< 1000行以及所述field_data_date_value一個。

my.cnf中的配置如下：

# 
# 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 
lc-messages-dir = /usr/share/mysql 
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    = 128M 
max_allowed_packet  = 256M 
thread_stack   = 2M 
thread_cache_size  = 8 
join_buffer_size  = 2M 

# This replaces the startup script and checks MyISAM tables if needed 
# the first time they are touched 
myisam-recover   = BACKUP 
max_connections  = 10 
table_cache   = 1028 
table_definition_cache =1028 
#thread_concurrency  = 10 
# 
# * Query Cache Configuration 
# 
query_cache_limit  = 8M 
query_cache_size  = 128M 
# 
# * 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 = 1 
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 
innodb_buffer_pool_size=512M 
innodb_log_file_size=256M 
innodb_log_buffer_size=5M 
innodb_flush_log_at_trx_commit=2 
innodb_thread_concurrency=8 
innodb_flush_method=O_DIRECT 


[mysqldump] 
quick 
quote-names 
max_allowed_packet  = 64M 

[mysql] 
#no-auto-rehash # faster start of mysql but no tab completition 

[isamchk] 
key_buffer    = 64M 

# 
# * 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/ 

有沒有一種方法來提高查詢的時間呢？可以做些什麼？這降低了網站的加載速度大大（因爲它不是唯一的慢查詢我有...）

非常感謝

Answer 1

假設這是一個視圖的查詢，嘗試在瀏覽UI開啓緩存和看這有什麼幫助。