Figuring out mysql max connection limit -


having performance issues @ peak times mysql go unresponsive. trying figure out if using right value max connections. server has 64gb of ram.

+------------------------------+------------+ | variable_name                | value      | +------------------------------+------------+ | bulk_insert_buffer_size      | 8388608    | | innodb_buffer_pool_instances | 1          | | innodb_buffer_pool_size      | 134217728  | | innodb_change_buffering      |        | | innodb_log_buffer_size       | 8388608    | | join_buffer_size             | 67108864   | | key_buffer_size              | 2147483648 | | myisam_sort_buffer_size      | 8388608    | | net_buffer_length            | 16384      | | preload_buffer_size          | 32768      | | read_buffer_size             | 67108864   | | read_rnd_buffer_size         | 2097152    | | sort_buffer_size             | 2097152    | | sql_buffer_result            | off        | +------------------------------+------------+  lsof | wc -l 124101  lsof -a -p mysqldpid | wc -l 518  mysql> show status '%connection%'; +----------------------+----------+ | variable_name        | value    | +----------------------+----------+ | connections          | 25019772 | | max_used_connections | 451      | +----------------------+----------+

currently connection limit set 350. other variables need calculate correct connection limit?

look status vatiables. connections , max_used_connections how many connections server has used.

show status '%connection%';  variable_name   value connection_errors_accept    0 connection_errors_internal  0 connection_errors_max_connections   0 connection_errors_peer_address  0 connection_errors_select    0 connection_errors_tcpwrap   0 connections 13 max_used_connections    7

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