Kaming,
please run SHOW INNODB STATUS to monitor the amount of memory allocated by InnoDB. If you have very many tables, the dictionary cache can take quite a lot of memory. But it should not grow indefinitely. If the problem is memory fragmentation caused by the malloc() in FreeBSD, you can test setting innodb_additional_mem_pool_size so big that the InnoDB memory allocation does not spill out of it. In the pool InnoDB uses a buddy algorithm which is very resistant to memory fragmentation. Best regards, Heikki Innobase Oy http://www.innodb.com InnoDB - transactions, foreign keys, and a hot backup tool for MySQL ..................... Subject: Innodb memory problem From: Kaming Date: Mon, 31 Mar 2003 17:48:46 +0800 Hi all, I have a problem about the innodb memory usage. The following is my config file for mysql and the version I am using is 4.0.12 in FreeBSD 4.7 stable. my.cnf [mysqld] port=3306 datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock set-variable = thread_cache_size=700 set-variable = table_cache=1000 set-variable = key_buffer_size=16M set-variable = max_connect_errors=9999999999 set-variable = max_connections=850 skip-name-resolve skip-locking memlock ####### INNODB CONFIG ####### innodb_data_home_dir = /var/lib/mysql/innodbdata innodb_data_file_path = datafile:4096M:autoextend set-variable = innodb_buffer_pool_size=24M set-variable = innodb_additional_mem_pool_size=8M innodb_log_group_home_dir = /var/lib/mysql/innodblog innodb_log_arch_dir = /var/lib/mysql/innodblog set-variable = innodb_log_file_size=10M set-variable = innodb_log_buffer_size=8M innodb_flush_log_at_trx_commit=0 ############################# [mysql.server] user=mysql basedir=/usr/local/site/mysql [safe_mysqld] err-log=/var/lib/mysql/mysqld.log pid-file=/var/lib/mysql/mysqld.pid When I start the mysqld, the memory usage is about 85M. Then the mysqld will use more and more memory and doesn't release. It will use all the memory and the performance will be dropped when it starts to use swap space... Do anyone know how to calculate the memory mysqld use when it starts? And also any method can be used to limit the memory usage for innodb? I don't have memory problem when using MyISAM before... The memory usage of mysqld reachs certain level and will not continue to grow..... Thanks a lot. Kaming. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
