Hello.

You can use SHOW PROCESSLIST and slow log to find out what queries
make such a heavy load. See:
  http://dev.mysql.com/doc/refman/5.0/en/show-processlist.html
  http://dev.mysql.com/doc/refman/5.0/en/slow-query-log.html


Sebastien Roy wrote:
> 
> Hey guys,
> 
> In my last email I was talking about 5 daemon on the same box.  We
> change that to use only one daemon and we upgrade to 5.0.xx-64bit
> instead of 4.1.xx-64bits.
> 
> The machine itself it's a 12 CPU running AIX 5.3 ML03 with 4 Gig of
> RAM.   The machine it's big web server running Apache/PHP and of course
> MySQL as the backend database.   We don't use for the moment INNODB,
> only MYISAM.
> Someone can tell me if my my.cnf sounds good for that king of machine.  
> And don't know why but since this afternoon the daemon stop responding
> and use 100% of the CPU.  I think it's trying to use more memory and the
> system don't want.
> 
> Thanks
> 
> The my.cnf file looks like that:
> 
> [client]
> port            = 3306
> socket          = /tmp/mysql.sock
> 
> 
> [mysqld]
> port            = 3306
> socket          = /tmp/mysql.sock
> key_buffer_size = 32M
> back_log = 50
> max_connections = 100
> max_connect_errors = 10
> table_cache = 512
> max_allowed_packet = 16M
> binlog_cache_size = 1M
> max_heap_table_size = 64M
> sort_buffer_size = 8M
> join_buffer_size = 8M
> thread_cache_size = 8
> thread_concurrency = 24
> query_cache_size = 64M
> query_cache_limit = 2M
> ft_min_word_len = 4
> default_table_type = MYISAM
> thread_stack = 192K
> transaction_isolation = REPEATABLE-READ
> tmp_table_size = 128M
> log-bin=mysql-bin
> log_slow_queries
> long_query_time = 2
> log_long_format
> log-bin=mysql-bin
> server-id       = 1
> 
> [mysqldump]
> quick
> max_allowed_packet = 32M
> 
> [mysql]
> no-auto-rehash
> 
> [isamchk]
> key_buffer = 256M
> sort_buffer_size = 256M
> read_buffer = 2M
> write_buffer = 2M
> 
> [myisamchk]
> key_buffer = 256M
> sort_buffer_size = 256M
> read_buffer = 2M
> write_buffer = 2M
> 
> [mysqlhotcopy]
> interactive-timeout
> 
> 


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