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Need help optimizing MariaDB (and possibly Nginx/Php-fpm) for very busy WordPress site
I have a very busy WordPress site (3M pageviews/month) currently running elsewhere that I’m in the process of moving over to Digital Ocean. I have two 32GB standard droplets set up, one running MariaDB and one running Nginx and Php7-fpm. It’s all working but it’s slow - the page load time is almost twice the old servers and I’m not sure exactly what I’ve got wrong in the config, or if it’s something else I’m missing. It would appear from new relic that it’s the database that’s slowing it down. The servers themselves seem like they’re not using much resources - memory and cpu usage is low.
Here’s my MariaDB config:
[mysqld] user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp lc-messages-dir = /usr/share/mysql skip-external-locking skip-name-resolve=1 performance_schema=ON bind-address = 0.0.0.0 key_buffer_size = 64M max_connections = 1500 connect_timeout = 5 wait_timeout = 600 max_allowed_packet = 16M thread_cache_size = 50 sort_buffer_size = 4M bulk_insert_buffer_size = 16M tmp_table_size = 64M max_heap_table_size = 64M query_cache_type = 0 query_cache_size = 0 log_error = /var/log/mysql/error.log slow_query_log_file = /var/log/mysql/mariadb-slow.log long_query_time = 10 log_slow_rate_limit = 1000 expire_logs_days = 10 max_binlog_size = 100M default_storage_engine = InnoDB innodb_buffer_pool_size = 26G innodb_buffer_pool_instances = 24 innodb_file_per_table = 1 innodb_log_file_size = 512M innodb_log_files_in_group = 2 innodb_log_buffer_size = 256M character-set-server = utf8mb4 collation-server = utf8mb4_general_ci
Any ideas welcome. Thank you!
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