hight cpu load

[IRANCITY]

hi dear
i transfer my site to new vps but in this vps cpu and ram usage is too high

how can i control it ?

i install CpNginx 6 plugin ... but no answer...


this is my info

my.cnf

root@server [~]# cat /etc/my.cnf
#DO NOT MODIFY THE FOLLOWING COMMENTED LINES!
#Created with ELS from www.servermonkeys.com
#els-build=5.0
[mysqld]
local-infile=0
datadir=/var/lib/mysql
skip-locking
skip-innodb
skip-networking
safe-show-database
query_cache_limit=1M
query_cache_size=128M ## 32MB for every 1GB of RAM
query_cache_type=1
max_user_connections=250
max_connections=500
interactive_timeout=10
wait_timeout=20
connect_timeout=20
thread_cache_size=128
key_buffer=512M ## 128MB for every 1GB of RAM
join_buffer=1M
max_connect_errors=20
max_allowed_packet=128M
table_cache=1024
record_buffer=1M
sort_buffer_size=4M ## 1MB for every 1GB of RAM
read_buffer_size=4M ## 1MB for every 1GB of RAM
read_rnd_buffer_size=4M  ## 1MB for every 1GB of RAM
thread_concurrency=8 ## Number of CPUs x 2
myisam_sort_buffer_size=64M
server-id=1
collation-server=latin1_general_ci

[mysql.server]
user=mysql

[safe_mysqld]
err-log=/var/log/mysqld.log
pid-file=/var/lib/mysql/mysql.pid
open_files_limit=8192

[mysqldump]
quick
max_allowed_packet=128M

[mysql]
no-auto-rehash
#safe-updates

[isamchk]
key_buffer=128M ##64
sort_buffer=64M
read_buffer=16M
write_buffer=16M

[myisamchk]
key_buffer=64M
sort_buffer=64M
read_buffer=16M
write_buffer=16M

[mysqlhotcopy]
interactive-timeout

2 image attached ....