MariaDB其实很占内存 - 全球主机交流论坛

MariaDB [(none)]> show engines;
+--------------------+---------+----------------------------------------------------------------------------+--------------+------+------------+
| Engine | Support | Comment | Transactions | XA | Savepoints |
+--------------------+---------+----------------------------------------------------------------------------+--------------+------+------------+
| MyISAM | YES | MyISAM storage engine | NO | NO | NO |
| CSV | YES | CSV storage engine | NO | NO | NO |
| MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
| BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO | NO |
| MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO |
| PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO |
| ARCHIVE | YES | Archive storage engine | NO | NO | NO |
| FEDERATED | YES | FederatedX pluggable storage engine | YES | NO | YES |
| InnoDB | DEFAULT | Percona-XtraDB, Supports transactions, row-level locking, and foreign keys | YES | YES | YES |
| Aria | YES | Crash-safe tables with MyISAM heritage | NO | NO | NO |
+--------------------+---------+----------------------------------------------------------------------------+--------------+------+------------+
10 rows in set (0.00 sec)

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MariaDB [(none)]> show variables like 'innodb_%';
+-------------------------------------------+-------------------------+
| Variable_name | Value |
+-------------------------------------------+-------------------------+
| innodb_adaptive_flushing | ON |
| innodb_adaptive_flushing_method | estimate |
| innodb_adaptive_hash_index | ON |
| innodb_adaptive_hash_index_partitions | 1 |
| innodb_additional_mem_pool_size | 16777216 |
| innodb_autoextend_increment | 8 |
| innodb_autoinc_lock_mode | 1 |
| innodb_blocking_buffer_pool_restore | OFF |
| innodb_buffer_pool_instances | 1 |
| innodb_buffer_pool_restore_at_startup | 0 |
| innodb_buffer_pool_shm_checksum | ON |
| innodb_buffer_pool_shm_key | 0 |
| innodb_buffer_pool_size | 268435456 |
| innodb_change_buffering | all |
| innodb_checkpoint_age_target | 0 |
| innodb_checksums | ON |
| innodb_commit_concurrency | 0 |
| innodb_concurrency_tickets | 500 |
| innodb_corrupt_table_action | assert |
| innodb_data_file_path | ibdata1:100M:autoextend |
| innodb_data_home_dir | |
| innodb_dict_size_limit | 0 |
| innodb_doublewrite | ON |
| innodb_doublewrite_file | |
| innodb_fake_changes | OFF |
| innodb_fast_checksum | OFF |
| innodb_fast_shutdown | 1 |
| innodb_file_format | Antelope |
| innodb_file_format_check | ON |
| innodb_file_format_max | Antelope |
| innodb_file_per_table | OFF |
| innodb_flush_log_at_trx_commit | 1 |
| innodb_flush_method | |
| innodb_flush_nei**or_pages | area |
| innodb_force_load_corrupted | OFF |
| innodb_force_recovery | 0 |
| innodb_ibuf_accel_rate | 100 |
| innodb_ibuf_active_contract | 1 |
| innodb_ibuf_max_size | 134201344 |
| innodb_import_table_from_xtrabackup | 0 |
| innodb_io_capacity | 200 |
| innodb_kill_idle_transaction | 0 |
| innodb_large_prefix | OFF |
| innodb_lazy_drop_table | 0 |
| innodb_lock_wait_timeout | 120 |
| innodb_locks_unsafe_for_binlog | OFF |
| innodb_log_block_size | 512 |
| innodb_log_buffer_size | 8388608 |
| innodb_log_file_size | 268435456 |
| innodb_log_files_in_group | 3 |
| innodb_log_group_home_dir | ./ |
| innodb_max_dirty_pages_pct | 90 |
| innodb_max_purge_lag | 0 |
| innodb_mirrored_log_groups | 1 |
| innodb_old_blocks_pct | 37 |
| innodb_old_blocks_time | 0 |
| innodb_open_files | 300 |
| innodb_page_size | 16384 |
| innodb_purge_batch_size | 20 |
| innodb_purge_threads | 1 |
| innodb_random_read_ahead | OFF |
| innodb_read_ahead | linear |
| innodb_read_ahead_threshold | 56 |
| innodb_read_io_threads | 8 |
| innodb_recovery_stats | OFF |
| innodb_recovery_update_relay_log | OFF |
| innodb_replication_delay | 0 |
| innodb_rollback_on_timeout | OFF |
| innodb_rollback_segments | 128 |
| innodb_show_locks_held | 10 |
| innodb_show_verbose_locks | 0 |
| innodb_spin_wait_delay | 6 |
| innodb_stats_auto_update | 1 |
| innodb_stats_method | nulls_equal |
| innodb_stats_on_metadata | ON |
| innodb_stats_sample_pages | 8 |
| innodb_stats_update_need_lock | 1 |
| innodb_strict_mode | OFF |
| innodb_support_xa | ON |
| innodb_sync_spin_loops | 30 |
| innodb_table_locks | ON |
| innodb_thread_concurrency | 16 |
| innodb_thread_concurrency_timer_based | OFF |
| innodb_thread_sleep_delay | 10000 |
| innodb_use_global_flush_log_at_trx_commit | ON |
| innodb_use_native_aio | ON |
| innodb_use_sys_malloc | ON |
| innodb_use_sys_stats_table | OFF |
| innodb_version | 1.1.8-26.0 |
| innodb_write_io_threads | 8 |
+-------------------------------------------+-------------------------+
90 rows in set (0.00 sec)

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