haute Mysql charge - CPU 360%

i ayant une utilisation du processeur haute mysql, sur le serveur Intel (R) Xeon (R) CPU E5520 @ 2.27GHz 16 noyau de processeurs et la mémoire RAM 16 Go fonctionnant sur centos 5,4haute Mysql charge - CPU 360%

la moyenne de charge pour le serveur 500-900, qui est vraiment grand nombre

quelques informations ici pour nous aider

fichier de configuration

mysql /etc/my.cnf

[mysqld] 
local-infile=0 
safe-show-database 
skip-locking 
skip-innodb 
skip-networking 
old_passwords 
back_log = 50 
skip-innodb 
max_connections = 40000 
key_buffer_size = 640M 
myisam_sort_buffer_size = 256M 
myisam_max_sort_file_size = 2048M 
join_buffer_size = 3M 
read_buffer_size = 3M 
sort_buffer_size = 3M 
table_cache = 8000 
thread_cache_size = 1024 
wait_timeout = 300 
interactive_timeout = 600 
connect_timeout = 10 
tmp_table_size = 1024M 
max_heap_table_size = 1024M 
max_allowed_packet = 128M 
net_buffer_length = 16384 
max_connect_errors = 100000 
long_query_time=0 
thread_concurrency = 32 
concurrent_insert = 2 
table_lock_wait_timeout = 30 
read_rnd_buffer_size = 4M 
bulk_insert_buffer_size = 16M 
query_cache_limit = 4M 
query_cache_size = 128M 
query_cache_type = 1 
query_prealloc_size = 262144 
query_alloc_block_size = 65536 
range_alloc_block_size = 4096 
transaction_alloc_block_size = 8192 
transaction_prealloc_size = 4096 
default-storage-engine = MyISAM 
max_write_lock_count = 8 
tmpdir=/mysqltmp 
set-variable=long_query_time=1 
log-slow-queries=/var/log/mysql/log-slow-queries.log 

[mysqld_safe] 
log-error=/var/log/mysqld.log 
pid-file=/var/run/mysqld/mysqld.pid 
nice = -10 
open_files_limit = 8192 

[mysqldump] 
quick 
max_allowed_packet = 128M 

[myisamchk] 
key_buffer_size = 640M 
sort_buffer_size = 64M 
read_buffer_size = 16M 
write_buffer_size = 16M 

[mysqlhotcopy] 
interactive-timeout

=============== NOTE je supprime quelques questions parce que je ne PUBLIER ICI PLUS DE 30000 CARACTÈRES ==================== =================

SHOW FULL PROCESSLIST; 
    393786 site_dtl localhost site_dtl Query 1 Locked UPDATE dle_post SET news_read = news_read +1 WHERE id = '3657' 
    402437 root localhost None Sleep 496 --- --- 
    409374 root localhost None Sleep 180 --- --- 
    411150 tgofmovi_home localhost tgofmovi_home Sleep 40 --- --- 
    411230 tgofmovi_home localhost tgofmovi_home Sleep 36 --- --- 
    411401 site_dtl localhost site_dtl Query 1 Locked SELECT * 
    FROM dle_post 
    WHERE approve = '1' 
    AND category 
    IN (80) 
    ORDER BY date DESC 
    LIMIT 0 , 10 
    411410 site_dtl localhost site_dtl Query 0 Locked SELECT * 
    FROM dle_post 
    WHERE approve = '1' 
    AND category 
    IN (80) 
    ORDER BY date DESC 
    LIMIT 0 , 10 
    411430 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(1,2,7,6,8) AND id NOT IN (0) AND date >= ' 
    411433 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411439 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411443 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411444 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(91) AND id NOT IN (0) AND date >= '2010-11 
    411490 site_dtl localhost site_dtl Query 2 Sorting result SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411491 site_dtl localhost site_dtl Query 2 Sorting result SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411498 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411509 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(91) AND id NOT IN (0) AND date >= '2010-11 
    411511 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411512 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411513 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411514 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411515 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411526 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411527 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE 
    411541 site_dtl localhost site_dtl Query 2 Sorting result SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411543 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(1,2,7,6,8) AND id NOT IN (0) AND date >= ' 
    411544 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(1,2,7,6,8) AND id NOT IN (0) AND date >= ' 
    411545 site_dtl localhost site_dtl Query 2 Sorting result SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411547 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(1,2,7,6,8) AND id NOT IN (0) AND date >= ' 
    411548 site_dtl localhost site_dtl Query 2 Sorting result SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411549 site_dtl localhost site_dtl Query 2 Sorting result SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411565 site_dtl localhost site_dtl Query 2 Sorting result SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
approve='1' AND category IN(91) AND id NOT IN (0) AND date >= '2010-11 
    411618 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(91) AND id NOT IN (0) AND date >= '2010-11 
    411619 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(80) ORDER BY date DESC LIMIT 0,10 
    411620 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(91) AND id NOT IN (0) AND date >= '2010-11 
    411621 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(91) AND id NOT IN (0) AND date >= '2010-11 
    411622 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(91) AND id NOT IN (0) AND date >= '2010-11 
    411623 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(91) AND id NOT IN (0) AND date >= '2010-11 
    411624 site_dtl localhost site_dtl Query 0 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(91) AND id NOT IN (0) AND date >= '2010-11 
    411625 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(91) AND id NOT IN (0) AND date >= '2010-11 
    411796 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411797 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37,43,54,55,56,60,61,62,63,64,69,70,71,46,5 
    411798 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37,43,54,55,56,60,61,62,63,64,69,70,71,46,5 
    411800 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411801 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411802 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411803 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411804 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411807 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411808 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411809 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411811 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411812 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411813 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411814 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411818 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411819 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411820 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411821 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411822 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411823 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411825 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411826 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411827 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411828 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411829 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(65) AND id NOT IN (0) AND date >= '2010-11 
    411830 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411831 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411833 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411834 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(48) AND id NOT IN (0) AND date >= '2010-11 
    411836 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411837 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411838 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411841 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411842 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411843 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411845 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411855 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411856 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' AND date >= '2010- 
    411857 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411858 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411859 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411860 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411861 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411862 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411863 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411864 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411865 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411866 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411867 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411868 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(37) AND id NOT IN (0) AND date >= '2010-11 
    411869 site_dtl localhost site_dtl Query 2 Sorting result SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411870 site_dtl localhost site_dtl Query 1 Sending data SELECT COUNT(*) as count FROM dle_post WHERE category regexp '[[:<:]](81)[[:>:]]' AND approve AND da 
    411871 site_dtl localhost site_dtl Query 2 Sorting result SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411872 site_dtl localhost site_dtl Query 2 Sorting result SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411873 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411874 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411875 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411876 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411877 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411878 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411879 site_dtl localhost site_dtl Query 1 Sending data SELECT COUNT(*) as count FROM dle_post WHERE category regexp '[[:<:]](44|80|81|54|55|60|61|62|63|64| 
    411890 site_dtl localhost site_dtl Query 1 Sending data SELECT COUNT(*) as count FROM dle_post WHERE category regexp '[[:<:]](44|80|81|54|55|60|61|62|63|64| 
    411891 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' AND date >= '2010- 
    411892 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411893 site_dtl localhost site_dtl Query 1 Copying to tmp table SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY RAND() LIM 
    411894 site_dtl localhost site_dtl Query 1 Sending data SELECT COUNT(*) as count FROM dle_post WHERE category regexp '[[:<:]](44|80|81|54|55|60|61|62|63|64| 
    411895 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411896 site_dtl localhost site_dtl Query 1 Sending data SELECT COUNT(*) as count FROM dle_post WHERE category regexp '[[:<:]](36|37|43|44|80|81|54|55|60|61| 
    411897 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411898 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411899 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411900 site_dtl localhost site_dtl Query 1 Locked SELECT * FROM dle_post WHERE approve='1' AND category IN(44,54,55,56,60,61,62,63,64,69,70,71) AND id 
    411901 site_dtl localhost site_dtl Query 2 Sorting result SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411902 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411903 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411904 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411905 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411907 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411908 site_dtl localhost site_dtl Query 2 Sorting result SELECT id, autor, date, short_story, SUBSTRING(full_story, 1, 15) as full_story, xfields, title, cat 
    411909 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411910 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411911 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411912 site_dtl localhost site_dtl Query 1 Locked SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411919 site_dtl localhost site_dtl Query 2 Sorting result SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411921 site_dtl localhost site_dtl Query 2 Sorting result SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411922 site_dtl localhost site_dtl Query 2 Sorting result SELECT id, title, date, alt_name, category, flag FROM dle_post WHERE approve='1' ORDER BY date DESC 
    411950 root localhost mysql Query 0 --- SHOW PROCESSLIST

========================= ===========================

SHOW CREATE TABLE dle_post\G 
*************************** 1. row *************************** 
Table: dle_post 
Create Table: CREATE TABLE `dle_post` (
`id` int(11) NOT NULL auto_increment, 
`autor` varchar(40) NOT NULL default '', 
`date` datetime NOT NULL default '0000-00-00 00:00:00', 
`short_story` text NOT NULL, 
`full_story` text NOT NULL, 
`xfields` text NOT NULL, 
`title` varchar(255) NOT NULL default '', 
`descr` varchar(200) NOT NULL default '', 
`keywords` text NOT NULL, 
`category` varchar(200) NOT NULL default '0', 
`alt_name` varchar(200) NOT NULL default '', 
`comm_num` smallint(5) unsigned NOT NULL default '0', 
`allow_comm` tinyint(1) NOT NULL default '1', 
`allow_main` tinyint(1) unsigned NOT NULL default '1', 
`allow_rate` tinyint(1) unsigned NOT NULL default '1', 
`approve` tinyint(1) NOT NULL default '0', 
`fixed` tinyint(1) NOT NULL default '0', 
`rating` smallint(5) NOT NULL default '0', 
`allow_br` tinyint(1) NOT NULL default '1', 
`vote_num` smallint(5) unsigned NOT NULL default '0', 
`news_read` mediumint(8) NOT NULL default '0', 
`votes` tinyint(1) NOT NULL default '0', 
`access` varchar(150) NOT NULL default '', 
`symbol` char(3) NOT NULL default '', 
`flag` tinyint(1) NOT NULL default '0', 
`editdate` varchar(15) NOT NULL default '', 
`editor` varchar(40) NOT NULL default '', 
`reason` varchar(255) NOT NULL default '', 
`view_edit` tinyint(1) NOT NULL default '0', 
`tags` varchar(255) NOT NULL default '', 
`metatitle` varchar(255) NOT NULL default '', 
PRIMARY KEY (`id`), 
KEY `autor` (`autor`), 
KEY `alt_name` (`alt_name`), 
KEY `category` (`category`), 
KEY `approve` (`approve`), 
KEY `allow_main` (`allow_main`), 
KEY `date` (`date`), 
KEY `symbol` (`symbol`), 
KEY `comm_num` (`comm_num`), 
KEY `tags` (`tags`), 
FULLTEXT KEY `short_story` (`short_story`,`full_story`,`xfields`,`title`) 
) ENGINE=MyISAM AUTO_INCREMENT=5265 DEFAULT CHARSET=utf8 

1 row in set (0.03 sec)

================ ====================================

SHOW TABLE STATUS LIKE 'dle_post'\G 
*************************** 1. row *************************** 
Name: dle_post 
Engine: MyISAM 
Version: 10 
Row_format: Dynamic 
Rows: 4971 
Avg_row_length: 6685 
Data_length: 33232848 
Max_data_length: 281474976710655 
Index_length: 7998464 
Data_free: 0 
Auto_increment: 5266 
Create_time: 2010-04-01 15:21:19 
Update_time: 2010-11-14 19:24:19 
Check_time: 2010-06-20 01:32:40 
Collation: utf8_general_ci 
Checksum: NULL 
Create_options: 
Comment: 
1 row in set (0.00 sec)

======= =============================================

SHOW TABLE STATUS LIKE 'dle_post'\G 
*************************** 1. row *************************** 
id: 1 
select_type: SIMPLE 
table: NULL 
type: NULL 
possible_keys: NULL 
key: NULL 
key_len: NULL 
ref: NULL 
rows: NULL 
Extra: No tables used 
1 row in set (0.00 sec)

=========================================== =========

SHOW VARIABLES LIKE '%buffer%'; 
+-------------------------------+-----------+ 
| Variable_name | Value | 
+-------------------------------+-----------+ 
| bulk_insert_buffer_size | 16777216 | 
| innodb_buffer_pool_awe_mem_mb | 0 | 
| innodb_buffer_pool_size | 8388608 | 
| innodb_log_buffer_size | 1048576 | 
| join_buffer_size | 3145728 | 
| key_buffer_size | 671088640 | 
| myisam_sort_buffer_size | 268435456 | 
| net_buffer_length | 16384 | 
| preload_buffer_size | 32768 | 
| read_buffer_size | 3145728 | 
| read_rnd_buffer_size | 4194304 | 
| sort_buffer_size | 3145728 | 
+-------------------------------+-----------+ 
12 rows in set (0.00 sec)

================================== ==================

j'espère que ces informations sont tous nécessaires pour résoudre ce problème

NOTE: cette commande a été exécutée lorsque le serveur 180 - 350

merci

Source

2010-11-15 iLinux85

Sans regarder tout votre message, sur quoi basez-vous les numéros de chargement de votre serveur? –

Avez-vous un lent requête de requête? Publiez les instructions EXPLAIN aussi. Votre ORDER BY RAND() sera lent pour les grandes tables, il existe de meilleures méthodes, comme this example. Fondamentalement, vous venez de générer un nombre aléatoire entre 0 et MAX (PRIMARY_KEY), puis faites SELECT * from table WHERE PRIMARY_KEY > @that_random_number LIMIT 1.

Ainsi, au lieu de SELECT * de dle_post ORDER BY RAND() LIMIT 1;

Faites ceci:

Calculer la valeur maximale de votre clé primaire (auto_increment) et le stocker dans une variable.

SELECT MAX (PRIMARY_ID_COLUMN_NAME) à partir de dle_posts LIMIT 1; Générez un nombre aléatoire (meilleur dans votre application pour éviter le temps d'aller-retour de la base de données, bien que vous puissiez combiner cela à l'étape 1 en remplaçant le MAX par FLOOR(RAND() * MAX);.Mais exemple en PHP:

$ selected = rand (0, $ max);
maintenant obtenir la première ligne avec la clé primaire égale ou supérieure à cette valeur:

SELECT * FROM dle_posts OÙ PRIMARY_ID_COLUMN_NAME> choisie $ LIMITE 1

Est-ce qu'un index sur (approve, category, date) aide?

Votre journal de requêtes lent ne montre pas de gros problèmes. Si vous pouvez modifier le code source, vous pouvez réécrire requête suivante:

SELECT COUNT(*) as count FROM dle_users where FROM_UNIXTIME(reg_date) > NOW() - INTERVAL 1 HOUR;

à une requête où vous n'utilisez pas maintenant, mais que votre demande soit remplir un horodatage. Maintenant, le cache de requête peut effectivement mettre en cache la requête.

Source

2010-11-15 11:34:30 Konerak

convenu - l'ordre de rand() va tuer la performance; vous devriez vous en débarrasser. Mais notez: la solution suggérée donnera un caractère aléatoire biaisé si vous avez des trous dans votre séquence de clé primaire. – Spudley

@Spudley: bon point sur le biais, je dois garder cela à l'esprit. – Konerak

c'est très rapide cependant, donc si vous avez une séquence d'ID plat ou vous pouvez vivre avec le biais, alors c'est probablement la meilleure solution pour obtenir une entrée aléatoire d'une table. – Spudley

haute Mysql charge - CPU 360%

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