high serverload, but still have alot of free ram
I have a Forum with around 400 members online at peak time.
And the serverload get pretty high at peak: 24.43, 20.07, 22.13
and of course the server getting slow. But it's still have a lot of free ram:
top - 18:39:35 up 4:04, 2 users, load average: 30.61, 24.04, 23.16
Tasks: 201 total, 17 running, 183 sleeping, 1 stopped, 0 zombie
Cpu(s): 65.0% us, 34.7% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.3% hi, 0.0% si
Mem: 2074948k total, 1381024k used, 693924k free, 5000k buffers
Swap: 0k total, 0k used, 0k free, 900060k cached
Do you know what should i change to lower the serverload:?
here is my Hardware config:
Dual Core opteron 170 ( 2.0GHz)
2 GB DDR RAM
250 GB SATA II
and here are my my.cnf:
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-locking
#skip-innodb
query_cache_limit=8M
query_cache_size=512M
query_cache_type=1
max_connections=500
#max_user_connections=10
interactive_timeout=10
wait_timeout=10
connect_timeout=6
thread_cache_size=128
key_buffer=256M
join_buffer=1M
max_allowed_packet=16M
table_cache=1024
record_buffer=1M
sort_buffer_size=2M
read_buffer_size=2M
max_connect_errors=10
# Try number of CPU's*2 for thread_concurrency
thread_concurrency=2
myisam_sort_buffer_size=64M
log-bin
server-id=1
[mysql.server]
user=mysql
basedir=/var/lib
[safe_mysqld]
err-log=/var/log/mysqld.log
#pid-file=/var/lib/mysql/mysql.pid
open_files_limit=8192
[mysqldump]
quick
max_allowed_packet=16M
[mysql]
no-auto-rehash
#safe-updates
[isamchk]
key_buffer=64M
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
Thanks in advance people
