Mysql High Cpu Usage to 100%

[shahzaib cb]

Hello,

I am struggling with mysql configuration for last 4 days. Currently we're using server with 32G ram and there's no traffic as well as no active query in mysql processlist but mysql usage is constant on 100% and above. My site is loading way too slow due to this issue. I have also tried optimizing mysql configuration but in vain. As i am newbie to this field so there might be possibility that i am not configuring mysql variables properly. Following is the my.cnf settings and we're using myisam storage engine, i've also tried the solution regarding date -s but in vain too.

As there's no traffic on the server so there's no high I/o of Hdd.

mysql-version is 5.5

my.cnf

[mysqld]
innodb_file_per_table=1
key_buffer_size=128M
query_cache_size=50M
query_cache_limit=2M
query_cache_type=1
thread_cache=32
thread_cache_size=4
table_cache=8096
tmp_table_size=64M
max_heap_table_size=64M
read_buffer=1M
onnect_timeout=30
wait_timeout=300
interactive_timeout=30
performance_schema=off

Help would be highly appreciated.

Best Regards.
Shahzaib