Re: Server just hanging (More Information)

[Thomas Deliduka]

Over the weekend and again just now my server was hanging. The queries (mentioned in my first post) were causing the system to hang for that database. The Key Buffer Usage was only at 26MB out of 256 but the hitrate was maxed out at 100% according to MySQL administrator. (This is the same symptoms I exlained happen above.

This time just after the "FLUSH TABLES" (or while it was flushing) I outputted the status VARs. Next time I will try to output the status BEFORE flushing the tables!

Aborted_clients 80
Aborted_connects 0
Bytes_received 519476581
Bytes_sent 2438439221
Com_admin_commands 86
Com_alter_table 0
Com_analyze 0
Com_backup_table 0
Com_begin 63
Com_change_db 79439
Com_change_master 0
Com_check 0
Com_commit 60
Com_create_db 0
Com_create_function 0
Com_create_index 0
Com_create_table 0
Com_delete 2917
Com_delete_multi 0
Com_drop_db 0
Com_drop_function 0
Com_drop_index 0
Com_drop_table 0
Com_flush 1
Com_grant 0
Com_ha_close 0
Com_ha_open 0
Com_ha_read 0
Com_insert 16952
Com_insert_select 10
Com_kill 80
Com_load 5
Com_load_master_data 0
Com_load_master_table 0
Com_lock_tables 0
Com_optimize 0
Com_purge 0
Com_rename_table 0
Com_repair 0
Com_replace 19629
Com_replace_select 0
Com_reset 0
Com_restore_table 0
Com_revoke 0
Com_rollback 0
Com_savepoint 0
Com_select 230509
Com_set_option 2
Com_show_binlog_events 0
Com_show_binlogs 0
Com_show_create 8
Com_show_databases 7
Com_show_fields 69
Com_show_grants 0
Com_show_keys 10
Com_show_logs 0
Com_show_master_status 0
Com_show_new_master 0
Com_show_open_tables 0
Com_show_processlist 194
Com_show_slave_hosts 0
Com_show_slave_status 0
Com_show_status 155
Com_show_innodb_status 154
Com_show_tables 76
Com_show_variables 2
Com_slave_start 0
Com_slave_stop 0
Com_truncate 0
Com_unlock_tables 0
Com_update 140404
Com_update_multi 0
Connections 63938
Created_tmp_disk_tables 278
Created_tmp_tables 40582
Created_tmp_files 3
Delayed_insert_threads 0
Delayed_writes 0
Delayed_errors 0
Flush_commands 2
Handler_commit 0
Handler_delete 19806
Handler_read_first 64676
Handler_read_key 29679360
Handler_read_next 159621174
Handler_read_prev 15136
Handler_read_rnd 1770115
Handler_read_rnd_next 98928083
Handler_rollback 0
Handler_update 7568940
Handler_write 12404262
Key_blocks_used 24627
Key_read_requests 63963872
Key_reads 23959
Key_write_requests 123288
Key_writes 80365
Max_used_connections 198
Not_flushed_key_blocks 0
Not_flushed_delayed_rows 0
Open_tables 388
Open_files 542
Open_streams 0
Opened_tables 1987
Questions 3020019
Qcache_queries_in_cache 1297
Qcache_inserts 203083
Qcache_hits 2463919
Qcache_lowmem_prunes 0
Qcache_not_cached 27380
Qcache_free_memory 103036568
Qcache_free_blocks 1
Qcache_total_blocks 2737
Rpl_status NULL
Select_full_join 538
Select_full_range_join 2
Select_range 4728
Select_range_check 11
Select_scan 67072
Slave_open_temp_tables 0
Slave_running OFF
Slow_launch_threads 0
Slow_queries 594
Sort_merge_passes 0
Sort_range 19365
Sort_rows 2165736
Sort_scan 44006
Table_locks_immediate 1843755
Table_locks_waited 7553
Threads_cached 62
Threads_created 212
Threads_connected 116
Threads_running 54
Uptime 73811

I know enough to be dangerous. Thanks for being patient!