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今天我的应用莫名其妙的不能连上数据库了。很奇怪。我一直怀疑我的数据库性能有问题。我现在一些状态贴出来,看看大家能不能帮帮我。
### BEGIN LOG - DATE: 100220, TIME: 222412 ###
show status;
+-----------------------------------+---------------+
| Variable_name | Value |
+-----------------------------------+---------------+
| Aborted_clients | 2642 |
| Aborted_connects | 17004 |
| Binlog_cache_disk_use | 0 |
| Binlog_cache_use | 0 |
| Bytes_received | 115 |
| Bytes_sent | 157 |
| Com_admin_commands | 0 |
| Com_alter_db | 0 |
| Com_alter_table | 0 |
| Com_analyze | 0 |
| Com_backup_table | 0 |
| Com_begin | 0 |
| Com_call_procedure | 0 |
| Com_change_db | 0 |
| Com_change_master | 0 |
| Com_check | 0 |
| Com_checksum | 0 |
| Com_commit | 0 |
| Com_create_db | 0 |
| Com_create_function | 0 |
| Com_create_index | 0 |
| Com_create_table | 0 |
| Com_create_user | 0 |
| Com_dealloc_sql | 0 |
| Com_delete | 0 |
| Com_delete_multi | 0 |
| Com_do | 0 |
| Com_drop_db | 0 |
| Com_drop_function | 0 |
| Com_drop_index | 0 |
| Com_drop_table | 0 |
| Com_drop_user | 0 |
| Com_execute_sql | 0 |
| Com_flush | 0 |
| Com_grant | 0 |
| Com_ha_close | 0 |
| Com_ha_open | 0 |
| Com_ha_read | 0 |
| Com_help | 0 |
| Com_insert | 0 |
| Com_insert_select | 0 |
| Com_kill | 0 |
| Com_load | 0 |
| Com_load_master_data | 0 |
| Com_load_master_table | 0 |
| Com_lock_tables | 0 |
| Com_optimize | 0 |
| Com_preload_keys | 0 |
| Com_prepare_sql | 0 |
| Com_purge | 0 |
| Com_purge_before_date | 0 |
| Com_rename_table | 0 |
| Com_repair | 0 |
| Com_replace | 0 |
| Com_replace_select | 0 |
| Com_reset | 0 |
| Com_restore_table | 0 |
| Com_revoke | 0 |
| Com_revoke_all | 0 |
| Com_rollback | 0 |
| Com_savepoint | 0 |
| Com_select | 1 |
| Com_set_option | 0 |
| Com_show_binlog_events | 0 |
| Com_show_binlogs | 0 |
| Com_show_charsets | 0 |
| Com_show_collations | 0 |
| Com_show_column_types | 0 |
| Com_show_create_db | 0 |
| Com_show_create_table | 0 |
| Com_show_databases | 0 |
| Com_show_errors | 0 |
| Com_show_fields | 0 |
| Com_show_grants | 0 |
| Com_show_innodb_status | 0 |
| Com_show_keys | 0 |
| Com_show_logs | 0 |
| Com_show_master_status | 0 |
| Com_show_ndb_status | 0 |
| Com_show_new_master | 0 |
| Com_show_open_tables | 0 |
| Com_show_privileges | 0 |
| Com_show_processlist | 0 |
| Com_show_slave_hosts | 0 |
| Com_show_slave_status | 0 |
| Com_show_status | 1 |
| Com_show_storage_engines | 0 |
| Com_show_tables | 0 |
| Com_show_triggers | 0 |
| Com_show_variables | 0 |
| Com_show_warnings | 0 |
| Com_slave_start | 0 |
| Com_slave_stop | 0 |
| Com_stmt_close | 0 |
| Com_stmt_execute | 0 |
| Com_stmt_fetch | 0 |
| Com_stmt_prepare | 0 |
| Com_stmt_reset | 0 |
| Com_stmt_send_long_data | 0 |
| Com_truncate | 0 |
| Com_unlock_tables | 0 |
| Com_update | 0 |
| Com_update_multi | 0 |
| Com_xa_commit | 0 |
| Com_xa_end | 0 |
| Com_xa_prepare | 0 |
| Com_xa_recover | 0 |
| Com_xa_rollback | 0 |
| Com_xa_start | 0 |
| Compression | OFF |
| Connections | 148336415 |
| Created_tmp_disk_tables | 0 |
| Created_tmp_files | 86 |
| Created_tmp_tables | 1 |
| Delayed_errors | 0 |
| Delayed_insert_threads | 0 |
| Delayed_writes | 0 |
| Flush_commands | 1 |
| Handler_commit | 0 |
| Handler_delete | 0 |
| Handler_discover | 0 |
| Handler_prepare | 0 |
| Handler_read_first | 0 |
| Handler_read_key | 0 |
| Handler_read_next | 0 |
| Handler_read_prev | 0 |
| Handler_read_rnd | 0 |
| Handler_read_rnd_next | 0 |
| Handler_rollback | 0 |
| Handler_savepoint | 0 |
| Handler_savepoint_rollback | 0 |
| Handler_update | 0 |
| Handler_write | 132 |
| Innodb_buffer_pool_pages_data | 15585 |
| Innodb_buffer_pool_pages_dirty | 4 |
| Innodb_buffer_pool_pages_flushed | 22739555 |
| Innodb_buffer_pool_pages_free | 242027 |
| Innodb_buffer_pool_pages_latched | 6 |
| Innodb_buffer_pool_pages_misc | 4532 |
| Innodb_buffer_pool_pages_total | 262144 |
| Innodb_buffer_pool_read_ahead_rnd | 7 |
| Innodb_buffer_pool_read_ahead_seq | 43 |
| Innodb_buffer_pool_read_requests | 548999781041 |
| Innodb_buffer_pool_reads | 2210 |
| Innodb_buffer_pool_wait_free | 0 |
| Innodb_buffer_pool_write_requests | 259494127 |
| Innodb_data_fsyncs | 22053847 |
| Innodb_data_pending_fsyncs | 0 |
| Innodb_data_pending_reads | 0 |
| Innodb_data_pending_writes | 0 |
| Innodb_data_read | 62672896 |
| Innodb_data_reads | 2645 |
| Innodb_data_writes | 36899985 |
| Innodb_data_written | 767736136192 |
| Innodb_dblwr_pages_written | 22739555 |
| Innodb_dblwr_writes | 378029 |
| Innodb_log_waits | 0 |
| Innodb_log_write_requests | 24209450 |
| Innodb_log_writes | 21117064 |
| Innodb_os_log_fsyncs | 21374504 |
| Innodb_os_log_pending_fsyncs | 0 |
| Innodb_os_log_pending_writes | 0 |
| Innodb_os_log_written | 22510879744 |
| Innodb_page_size | 16384 |
| Innodb_pages_created | 11893 |
| Innodb_pages_read | 3692 |
| Innodb_pages_written | 22739555 |
| Innodb_row_lock_current_waits | 0 |
| Innodb_row_lock_time | 2914255 |
| Innodb_row_lock_time_avg | 21 |
| Innodb_row_lock_time_max | 18306 |
| Innodb_row_lock_waits | 134266 |
| Innodb_rows_deleted | 0 |
| Innodb_rows_inserted | 2745543 |
| Innodb_rows_read | 3886770321738 |
| Innodb_rows_updated | 47851517 |
| Key_blocks_not_flushed | 0 |
| Key_blocks_unused | 13396 |
| Key_blocks_used | 13396 |
| Key_read_requests | 1401350342 |
| Key_reads | 6334937 |
| Key_write_requests | 22831292 |
| Key_writes | 21041690 |
| Last_query_cost | 0.000000 |
| Max_used_connections | 501 |
| Not_flushed_delayed_rows | 0 |
| Open_files | 0 |
| Open_streams | 0 |
| Open_tables | 493 |
| Opened_tables | 0 |
| Prepared_stmt_count | 0 |
| Qcache_free_blocks | 0 |
| Qcache_free_memory | 0 |
| Qcache_hits | 0 |
| Qcache_inserts | 0 |
| Qcache_lowmem_prunes | 0 |
| Qcache_not_cached | 0 |
| Qcache_queries_in_cache | 0 |
| Qcache_total_blocks | 0 |
| Questions | 2557205375 |
| Rpl_status | NULL |
| Select_full_join | 0 |
| Select_full_range_join | 0 |
| Select_range | 0 |
| Select_range_check | 0 |
| Select_scan | 1 |
| Slave_open_temp_tables | 0 |
| Slave_retried_transactions | 0 |
| Slave_running | OFF |
| Slow_launch_threads | 9 |
| Slow_queries | 0 |
| Sort_merge_passes | 0 |
| Sort_range | 0 |
| Sort_rows | 0 |
| Sort_scan | 0 |
| Table_locks_immediate | 771637857 |
| Table_locks_waited | 119158 |
| Tc_log_max_pages_used | 0 |
| Tc_log_page_size | 0 |
| Tc_log_page_waits | 0 |
| Threads_cached | 0 |
| Threads_connected | 496 |
| Threads_created | 148336414 |
| Threads_running | 494 |
| Uptime | 1948347 |
| Uptime_since_flush_status | 1948347 |
+-----------------------------------+---------------+
226 rows in set (0.00 sec)
mysql> show status like 'Com_commit';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| Com_commit | 0 |
+---------------+-------+
1 row in set (0.00 sec)
mysql> show status like 'Com_rollback';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| Com_rollback | 0 |
+---------------+-------+
1 row in set (0.00 sec)
mysql> show status like 'Key%';
+------------------------+------------+
| Variable_name | Value |
+------------------------+------------+
| Key_blocks_not_flushed | 0 |
| Key_blocks_unused | 13396 |
| Key_blocks_used | 13396 |
| Key_read_requests | 1401350342 |
| Key_reads | 6334937 |
| Key_write_requests | 22831292 |
| Key_writes | 21041690 |
+------------------------+------------+
7 rows in set (0.01 sec)
mysql> show status like 'innodb_buffer_pool_read%';
+-----------------------------------+--------------+
| Variable_name | Value |
+-----------------------------------+--------------+
| Innodb_buffer_pool_read_ahead_rnd | 7 |
| Innodb_buffer_pool_read_ahead_seq | 43 |
| Innodb_buffer_pool_read_requests | 548999796592 |
| Innodb_buffer_pool_reads | 2210 |
+-----------------------------------+--------------+
4 rows in set (0.01 sec)
mysql> show status like 'Qcache%';
+-------------------------+-------+
| Variable_name | Value |
+-------------------------+-------+
| Qcache_free_blocks | 0 |
| Qcache_free_memory | 0 |
| Qcache_hits | 0 |
| Qcache_inserts | 0 |
| Qcache_lowmem_prunes | 0 |
| Qcache_not_cached | 0 |
| Qcache_queries_in_cache | 0 |
| Qcache_total_blocks | 0 |
+-------------------------+-------+
8 rows in set (0.00 sec)
mysql> show status like 'open%';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| Open_files | 0 |
| Open_streams | 0 |
| Open_tables | 494 |
| Opened_tables | 0 |
+---------------+-------+
4 rows in set (0.01 sec)
mysql> show status like 'Thread%';
+-------------------+-----------+
| Variable_name | Value |
+-------------------+-----------+
| Threads_cached | 0 |
| Threads_connected | 497 |
| Threads_created | 148336415 |
| Threads_running | 495 |
+-------------------+-----------+
4 rows in set (0.01 sec)
mysql> show status like 'Connections';
+---------------+-----------+
| Variable_name | Value |
+---------------+-----------+
| Connections | 148336416 |
+---------------+-----------+
1 row in set (0.00 sec)
mysql> show status like '%lock%';
+-------------------------------+-----------+
| Variable_name | Value |
+-------------------------------+-----------+
| Com_lock_tables | 0 |
| Com_unlock_tables | 0 |
| Innodb_row_lock_current_waits | 0 |
| Innodb_row_lock_time | 2914255 |
| Innodb_row_lock_time_avg | 21 |
| Innodb_row_lock_time_max | 18306 |
| Innodb_row_lock_waits | 134266 |
| Key_blocks_not_flushed | 0 |
| Key_blocks_unused | 13396 |
| Key_blocks_used | 13396 |
| Qcache_free_blocks | 0 |
| Qcache_total_blocks | 0 |
| Table_locks_immediate | 771637859 |
| Table_locks_waited | 119158 |
+-------------------------------+-----------+
14 rows in set (0.01 sec)
mysql> show status like 'innodb_log_waits';
+------------------+-------+
| Variable_name | Value |
+------------------+-------+
| Innodb_log_waits | 0 |
+------------------+-------+
1 row in set (0.01 sec)
mysql> show global status like '%slow%';
+---------------------+-------+
| Variable_name | Value |
+---------------------+-------+
| Slow_launch_threads | 9 |
| Slow_queries | 15 |
+---------------------+-------+
2 rows in set (0.00 sec)
mysql> show variables like 'max_connections';
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| max_connections | 500 |
+-----------------+-------+
1 row in set (0.00 sec)
mysql> show global status like 'Max_used_connections';
+----------------------+-------+
| Variable_name | Value |
+----------------------+-------+
| Max_used_connections | 501 |
+----------------------+-------+
1 row in set (0.01 sec)
mysql> show variables like 'thread_cache_size';
+-------------------+-------+
| Variable_name | Value |
+-------------------+-------+
| thread_cache_size | 0 |
+-------------------+-------+
1 row in set (0.00 sec)
mysql> show global status like 'qcache%';
+-------------------------+-------+
| Variable_name | Value |
+-------------------------+-------+
| Qcache_free_blocks | 0 |
| Qcache_free_memory | 0 |
| Qcache_hits | 0 |
| Qcache_inserts | 0 |
| Qcache_lowmem_prunes | 0 |
| Qcache_not_cached | 0 |
| Qcache_queries_in_cache | 0 |
| Qcache_total_blocks | 0 |
+-------------------------+-------+
8 rows in set (0.01 sec)
mysql> show global status like 'table_locks%';
+-----------------------+-----------+
| Variable_name | Value |
+-----------------------+-----------+
| Table_locks_immediate | 771637860 |
| Table_locks_waited | 119158 |
+-----------------------+-----------+
2 rows in set (0.00 sec)
mysql> show global status like 'handler_read%';
+-----------------------+---------------+
| Variable_name | Value |
+-----------------------+---------------+
| Handler_read_first | 73016688 |
| Handler_read_key | 1855779824 |
| Handler_read_next | 2999518093321 |
| Handler_read_prev | 1503806 |
| Handler_read_rnd | 549408279 |
| Handler_read_rnd_next | 8409272967893 |
+-----------------------+---------------+
6 rows in set (0.00 sec)
mysql>
mysql>
mysql>
### END LOG - DATE: 100220, TIME: 223315 ### |
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