Hi All, Iīm having a trouble where my server is falling to it's knees when a certain number of connections are match.
Well, in a short, I configured the my.cnf files to accept up to 120 connections. When the server receives about to 55 connections, it hangs the connections and I donīt get me even enter the MySQL interactive mode. I see in the list people configuring the MySQL tu accept up to 1000 connections and my server donīt get to hold 100... :-/ I think some queries of the applications was badly designed, but even thus I need to optimize it. My server is a P4-2.4 with 1 Gb RAM. MySQL 4.0.18 The my.cfn file has the following sets: -------------------------- [mysqld] port=3306 socket=/tmp/mysql.sock skip-locking set-variable = key_buffer=384M set-variable = sort_buffer_size=512K set-variable = record_buffer=512K set-variable = read_buffer_size=512K set-variable = max_connections=120 set-variable = max_connect_errors=50 set-variable = max_allowed_packet=1M set-variable = table_cache=256 set-variable = myisam_sort_buffer_size=8M set-variable = thread_cache=16 log-bin server-id = 1 #set-variable = bdb_cache_size=64M #set-variable = bdb_max_lock=100000 #skip-innodb innodb_data_file_path = ibdata1:10M:autoextend #innodb_data_home_dir = c:\ibdata #innodb_log_group_home_dir = c:\iblogs #innodb_log_arch_dir = c:\iblogs #set-variable = innodb_mirrored_log_groups=1 #set-variable = innodb_log_files_in_group=3 set-variable = innodb_log_file_size=5M set-variable = innodb_log_buffer_size=8M #innodb_flush_log_at_trx_commit=1 #innodb_log_archive=0 set-variable = innodb_buffer_pool_size=256M set-variable = innodb_additional_mem_pool_size=20M set-variable = innodb_file_io_threads=16 [mysqldump] quick set-variable = max_allowed_packet=16M [mysql] no-auto-rehash # Remove the next comment character if you are not familiar with SQL #safe-updates [isamchk] set-variable = key_buffer=8M set-variable = sort_buffer=8M set-variable = read_buffer=2M set-variable = write_buffer=2M [myisamchk] set-variable = key_buffer=8M set-variable = sort_buffer=8M set-variable = read_buffer=2M set-variable = write_buffer=2M [mysqlhotcopy] interactive-timeout -------------------------- The error message is: -------------------------- 041125 12:13:14 InnoDB: Started /usr/local/libexec/mysqld: ready for connections. Version: '4.0.18-log' socket: '/tmp/mysql.sock' port: 3306 InnoDB: Fatal error: cannot allocate 81920 bytes of InnoDB: memory with malloc! Total allocated memory InnoDB: by InnoDB 322902064 bytes. Operating system errno: 12 InnoDB: Cannot continue operation! InnoDB: Check if you should increase the swap file or InnoDB: ulimits of your operating system. InnoDB: On FreeBSD check you have compiled the OS with InnoDB: a big enough maximum process size. InnoDB: We now intentionally generate a seg fault so that InnoDB: on Linux we get a stack trace. mysqld got signal 11; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=402653184 read_buffer_size=520192 max_used_connections=55 max_connections=120 threads_connected=55 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = 515615 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. -------------------------- Thanks, Ronan -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
