MariaDB performance issues

Server version: 10.2.27-MariaDB MariaDB Server

hello - i am really not much of a DBA, more of a programmer who also has responsibility for the db.

very recently MariaDB seems to occasionally "crash" and leaves our db's in a corrupted state. this started happening perhaps after an upgrade(?). i did yum-remove all MariaDB stuff, including the db's themselves and used yum-install to reinstall everything.

i ran `MySQLTuner-perl` and i see the following:

[!!] /var/log/mariadb.err.log contains 1 warning(s).
[!!] Query cache may be disabled by default due to mutex contention.
[!!] Query cache efficiency: 0.0% (0 cached / 1 selects)
[!!] Key buffer used: 18.2% (24M used / 134M cache)
[!!] InnoDB buffer pool / data size: 512.0M/576.5M
[!!] InnoDB Read buffer efficiency: 23.03% (2562 hits/ 11127 total)
[!!] InnoDB Write Log efficiency: 0% (2 hits/ 0 total)

and here is my.cnf:

innodb_log_file_size = 64M              # 2019-10-14
max_allowed_packet = 64M                #   2019-10-14
skip-name-resolve                       ## 2019-10-16
innodb_buffer_pool_size = 512M
table_definition_cache = 1000000        # 2019-10-14 - changed from 400 (default)
skip-networking=0        #skip-networking=1         ## added 2019-05-09
plugin_load_add = server_audit
log_error=/var/log/mariadb.err.log      ## added 2019-06-13

any suggestions on how to proceed?

Answer Answered by Ian Gilfillan in this comment.

Take a look at the error log to get a better idea of what is going wrong. You need to provide much more information to get some assistance. It could be memory issues, old corruption, or a bug, in which case you can report on JIRA.


Comments loading...
Content reproduced on this site is the property of its respective owners, and this content is not reviewed in advance by MariaDB. The views, information and opinions expressed by this content do not necessarily represent those of MariaDB or any other party.