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Calcul mémoire en multilignes

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whirigoyen 2023-12-15 09:58:08 +01:00
parent 8be5813c6a
commit e3fefa301c
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HowtoMySQL.md
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@ -297,7 +297,9 @@ Il faut ensuite penser à ajuster aussi la valeur de `innodb_buffer_pool_size` d
Voici la commande pour calculer la mémoire théorique qui sera utilisée (théorique car ça ne prend pas en compte les fuites mémoire) :
~~~
MariaDB [(none)]> SELECT ( @@key_buffer_size + @@query_cache_size + @@tmp_table_size + @@innodb_buffer_pool_size + @@innodb_log_buffer_size + @@max_connections * ( @@read_buffer_size + @@read_rnd_buffer_size + @@sort_buffer_size + @@join_buffer_size + @@binlog_cache_size + @@thread_stack ) ) / (1024 * 1024 * 1024) AS MAX_MEMORY_GB;
MariaDB [(none)]> SELECT ( @@key_buffer_size + @@query_cache_size + @@tmp_table_size + @@innodb_buffer_pool_size
+ @@innodb_log_buffer_size + @@max_connections * ( @@read_buffer_size + @@read_rnd_buffer_size + @@sort_buffer_size
+ @@join_buffer_size + @@binlog_cache_size + @@thread_stack ) ) / (1024 * 1024 * 1024) AS MAX_MEMORY_GB;
~~~
Pour aller plus loin : <https://mariadb.com/kb/en/mariadb-memory-allocation/>