Translations:Administrators/Optimize performance/MySQL/12/en

Especially watch out for these keys:
 * Created_tmp_disk_tables : The number of temporary tables that had been written to the hard disk because the buffer was too small. See tmp_table_size if this happened more than a few times
 * Innodb_buffer_pool_reads : The number of times index data have to be read from the hard disk because it was not cached in memory. High values may indicate the need to increase the value for innodb_buffer_pool_size
 * Qcache_lowmem_prunes : The number of queries that had been removed from the query cache because there was no more space left. If this value is high, try to increase query_cache_size
 * Slow_queries : The number of queries that need longer than the configured number of seconds. If this value is high, your server is either to slow for the amount of simultaneous users that are hitting your site or there are some very slow queries executed very often. In the later case check if you've installed extensions for Arcavias that doesn't scale well and can cause performance problems
 * Sort_merge_passes : The number of merge passes the sort algorithm has been forced to do. Higher values can be a hint to increase the sort_buffer_size