I think you may be able to get around this by using multiple key buffers? (MySQL 4.1 or later)

-Micah

On 05/15/2007 01:24 AM, Christoph Klünter wrote:
Hi List,

We have a mysql-Server with 8G of Ram. But mysql doesn't use this ram.
 But we get following error:

May 14 22:56:11 sql mysqld[5875]: 070514 22:56:10 [ERROR] /usr/sbin/mysqld: Got 
error 12 from storage engine
May 14 22:56:11 sql mysqld[5875]: 070514 22:56:10 [ERROR] /usr/sbin/mysqld: 
Sort aborted

I have set the sort_buffer_size to 1G but even this doesn't help.
Any hints ? Should we try a 64Bit-OS ?

Regards
     Christoph


Kernel is a 2.6.18-3-686-bigmem from debian-etch.

mysql> show status;
+----------------------------+------------+
| Variable_name              | Value      |
+----------------------------+------------+
| Aborted_clients            | 103352     |
| Aborted_connects           | 3          |
| Binlog_cache_disk_use      | 0          |
| Binlog_cache_use           | 0          |
| Bytes_received             | 2985193088 |
| Bytes_sent                 | 3725769917 |
| Com_admin_commands         | 5377515    |
| Com_alter_db               | 0          |
| Com_alter_table            | 8          |
| Com_analyze                | 0          |
| Com_backup_table           | 0          |
| Com_begin                  | 0          |
| Com_change_db              | 5434526    |
| 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_dealloc_sql            | 0          |
| Com_delete                 | 154176     |
| 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                  | 2          |
| Com_grant                  | 0          |
| Com_ha_close               | 0          |
| Com_ha_open                | 0          |
| Com_ha_read                | 0          |
| Com_help                   | 0          |
| Com_insert                 | 473672     |
| 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                  | 2          |
| 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                 | 14627137   |
| Com_set_option             | 450        |
| Com_show_binlog_events     | 0          |
| Com_show_binlogs           | 13         |
| Com_show_charsets          | 112        |
| Com_show_collations        | 112        |
| Com_show_column_types      | 0          |
| Com_show_create_db         | 0          |
| Com_show_create_table      | 42         |
| Com_show_databases         | 10         |
| Com_show_errors            | 0          |
| Com_show_fields            | 111        |
| Com_show_grants            | 46         |
| Com_show_innodb_status     | 0          |
| Com_show_keys              | 56         |
| Com_show_logs              | 0          |
| Com_show_master_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            | 4930       |
| Com_show_storage_engines   | 7          |
| Com_show_tables            | 250        |
| Com_show_variables         | 4708       |
| Com_show_warnings          | 0          |
| Com_slave_start            | 0          |
| Com_slave_stop             | 0          |
| Com_truncate               | 1          |
| Com_unlock_tables          | 0          |
| Com_update                 | 1088621    |
| Com_update_multi           | 0          |
| Connections                | 61722      |
| Created_tmp_disk_tables    | 6036       |
| Created_tmp_files          | 8          |
| Created_tmp_tables         | 287594     |
| Delayed_errors             | 0          |
| Delayed_insert_threads     | 0          |
| Delayed_writes             | 0          |
| Flush_commands             | 1          |
| Handler_commit             | 0          |
| Handler_delete             | 339394     |
| Handler_discover           | 0          |
| Handler_read_first         | 40913      |
| Handler_read_key           | 76429100   |
| Handler_read_next          | 643328453  |
| Handler_read_prev          | 33596837   |
| Handler_read_rnd           | 33146948   |
| Handler_read_rnd_next      | 2840985720 |
| Handler_rollback           | 0          |
| Handler_update             | 1086372    |
| Handler_write              | 28076366   |
| Key_blocks_not_flushed     | 0          |
| Key_blocks_unused          | 1944154    |
| Key_blocks_used            | 151175     |
| Key_read_requests          | 347151518  |
| Key_reads                  | 160286     |
| Key_write_requests         | 3334152    |
| Key_writes                 | 2277303    |
| Max_used_connections       | 639        |
| Not_flushed_delayed_rows   | 0          |
| Open_files                 | 788        |
| Open_streams               | 0          |
| Open_tables                | 716        |
| Opened_tables              | 2103       |
| Qcache_free_blocks         | 7890       |
| Qcache_free_memory         | 57390144   |
| Qcache_hits                | 4027006    |
| Qcache_inserts             | 14379458   |
| Qcache_lowmem_prunes       | 34882      |
| Qcache_not_cached          | 189319     |
| Qcache_queries_in_cache    | 9026       |
| Qcache_total_blocks        | 25979      |
| Questions                  | 25868482   |
| Rpl_status                 | NULL       |
| Select_full_join           | 0          |
| Select_full_range_join     | 0          |
| Select_range               | 339495     |
| Select_range_check         | 0          |
| Select_scan                | 515306     |
| Slave_open_temp_tables     | 0          |
| Slave_running              | OFF        |
| Slave_retried_transactions | 0          |
| Slow_launch_threads        | 0          |
| Slow_queries               | 0          |
| Sort_merge_passes          | 0          |
| Sort_range                 | 1000576    |
| Sort_rows                  | 181854952  |
| Sort_scan                  | 620651     |
| Table_locks_immediate      | 12510467   |
| Table_locks_waited         | 4698993    |
| Threads_cached             | 136        |
| Threads_connected          | 37         |
| Threads_created            | 2167       |
| Threads_running            | 5          |
| Uptime                     | 134426     |
+----------------------------+------------+
157 rows in set (0.00 sec)

mysql> show variables;
+---------------------------------+----------------------------------------------------------+
| Variable_name                   | Value                                       
             |
+---------------------------------+----------------------------------------------------------+
| back_log                        | 50                                          
             |
| basedir                         | /usr/                                       
             |
| bdb_cache_size                  | 8388600                                     
             |
| bdb_home                        |                                             
             |
| bdb_log_buffer_size             | 0                                           
             |
| bdb_logdir                      |                                             
             |
| bdb_max_lock                    | 10000                                       
             |
| bdb_shared_data                 | OFF                                         
             |
| bdb_tmpdir                      |                                             
             |
| binlog_cache_size               | 32768                                       
             |
| bulk_insert_buffer_size         | 8388608                                     
             |
| character_set_client            | latin1                                      
             |
| character_set_connection        | latin1                                      
             |
| character_set_database          | latin1                                      
             |
| character_set_results           | latin1                                      
             |
| character_set_server            | latin1                                      
             |
| character_set_system            | utf8                                        
             |
| character_sets_dir              | /usr/share/mysql/charsets/                  
             |
| collation_connection            | latin1_swedish_ci                           
             |
| collation_database              | latin1_swedish_ci                           
             |
| collation_server                | latin1_swedish_ci                           
             |
| concurrent_insert               | ON                                          
             |
| connect_timeout                 | 5                                           
             |
| datadir                         | /var/lib/mysql/                             
             |
| date_format                     | %Y-%m-%d                                    
             |
| datetime_format                 | %Y-%m-%d %H:%i:%s                           
             |
| default_week_format             | 0                                           
             |
| delay_key_write                 | ON                                          
             |
| delayed_insert_limit            | 100                                         
             |
| delayed_insert_timeout          | 300                                         
             |
| delayed_queue_size              | 1000                                        
             |
| expire_logs_days                | 0                                           
             |
| flush                           | OFF                                         
             |
| flush_time                      | 0                                           
             |
| ft_boolean_syntax               | + -><()~*:""&|                              
             |
| ft_max_word_len                 | 84                                          
             |
| ft_min_word_len                 | 4                                           
             |
| ft_query_expansion_limit        | 20                                          
             |
| ft_stopword_file                | (built-in)                                  
             |
| group_concat_max_len            | 1024                                        
             |
| have_archive                    | YES                                         
             |
| have_bdb                        | DISABLED                                    
             |
| have_blackhole_engine           | NO                                          
             |
| have_compress                   | YES                                         
             |
| have_crypt                      | YES                                         
             |
| have_csv                        | YES                                         
             |
| have_example_engine             | NO                                          
             |
| have_geometry                   | YES                                         
             |
| have_innodb                     | YES                                         
             |
| have_isam                       | YES                                         
             |
| have_ndbcluster                 | DISABLED                                    
             |
| have_openssl                    | NO                                          
             |
| have_query_cache                | YES                                         
             |
| have_raid                       | YES                                         
             |
| have_rtree_keys                 | YES                                         
             |
| have_symlink                    | YES                                         
             |
| init_connect                    |                                             
             |
| init_file                       |                                             
             |
| init_slave                      |                                             
             |
| innodb_additional_mem_pool_size | 1048576                                     
             |
| innodb_autoextend_increment     | 8                                           
             |
| innodb_buffer_pool_awe_mem_mb   | 0                                           
             |
| innodb_buffer_pool_size         | 209715200                                   
             |
| innodb_data_file_path           | ibdata1:10M:autoextend                      
             |
| innodb_data_home_dir            |                                             
             |
| innodb_fast_shutdown            | ON                                          
             |
| innodb_file_io_threads          | 4                                           
             |
| innodb_file_per_table           | OFF                                         
             |
| innodb_flush_log_at_trx_commit  | 1                                           
             |
| innodb_flush_method             |                                             
             |
| innodb_force_recovery           | 0                                           
             |
| innodb_lock_wait_timeout        | 50                                          
             |
| innodb_locks_unsafe_for_binlog  | OFF                                         
             |
| innodb_log_arch_dir             |                                             
             |
| innodb_log_archive              | OFF                                         
             |
| innodb_log_buffer_size          | 1048576                                     
             |
| innodb_log_file_size            | 5242880                                     
             |
| innodb_log_files_in_group       | 2                                           
             |
| innodb_log_group_home_dir       | ./                                          
             |
| innodb_max_dirty_pages_pct      | 90                                          
             |
| innodb_max_purge_lag            | 0                                           
             |
| innodb_mirrored_log_groups      | 1                                           
             |
| innodb_open_files               | 300                                         
             |
| innodb_table_locks              | ON                                          
             |
| innodb_thread_concurrency       | 8                                           
             |
| interactive_timeout             | 28800                                       
             |
| join_buffer_size                | 131072                                      
             |
| key_buffer_size                 | 4294963200                                  
             |
| key_cache_age_threshold         | 300                                         
             |
| key_cache_block_size            | 1024                                        
             |
| key_cache_division_limit        | 100                                         
             |
| language                        | /usr/share/mysql/english/                   
             |
| large_files_support             | ON                                          
             |
| license                         | GPL                                         
             |
| local_infile                    | ON                                          
             |
| locked_in_memory                | OFF                                         
             |
| log                             | OFF                                         
             |
| log_bin                         | ON                                          
             |
| log_error                       |                                             
             |
| log_slave_updates               | OFF                                         
             |
| log_slow_queries                | ON                                          
             |
| log_update                      | OFF                                         
             |
| log_warnings                    | 1                                           
             |
| long_query_time                 | 10                                          
             |
| low_priority_updates            | OFF                                         
             |
| lower_case_file_system          | OFF                                         
             |
| lower_case_table_names          | 0                                           
             |
| max_allowed_packet              | 33553408                                    
             |
| max_binlog_cache_size           | 4294967295                                  
             |
| max_binlog_size                 | 104857600                                   
             |
| max_connect_errors              | 10                                          
             |
| max_connections                 | 2000                                        
             |
| max_delayed_threads             | 20                                          
             |
| max_error_count                 | 64                                          
             |
| max_heap_table_size             | 16777216                                    
             |
| max_insert_delayed_threads      | 20                                          
             |
| max_join_size                   | 4294967295                                  
             |
| max_length_for_sort_data        | 1024                                        
             |
| max_relay_log_size              | 0                                           
             |
| max_seeks_for_key               | 4294967295                                  
             |
| max_sort_length                 | 1024                                        
             |
| max_tmp_tables                  | 200                                         
             |
| max_user_connections            | 0                                           
             |
| max_write_lock_count            | 4294967295                                  
             |
| myisam_data_pointer_size        | 4                                           
             |
| myisam_max_extra_sort_file_size | 2147483648                                  
             |
| myisam_max_sort_file_size       | 2147483647                                  
             |
| myisam_recover_options          | OFF                                         
             |
| myisam_repair_threads           | 1                                           
             |
| myisam_sort_buffer_size         | 134217728                                   
             |
| ndb_autoincrement_prefetch_sz   | 32                                          
             |
| ndb_force_send                  | ON                                          
             |
| ndb_use_exact_count             | ON                                          
             |
| ndb_use_transactions            | ON                                          
             |
| net_buffer_length               | 16384                                       
             |
| net_read_timeout                | 30                                          
             |
| net_retry_count                 | 10                                          
             |
| net_write_timeout               | 60                                          
             |
| new                             | OFF                                         
             |
| old_passwords                   | ON                                          
             |
| open_files_limit                | 10010                                       
             |
| pid_file                        | /var/run/mysqld/mysqld.pid                  
             |
| port                            | 3306                                        
             |
| preload_buffer_size             | 32768                                       
             |
| protocol_version                | 10                                          
             |
| query_alloc_block_size          | 8192                                        
             |
| query_cache_limit               | 1048576                                     
             |
| query_cache_min_res_unit        | 4096                                        
             |
| query_cache_size                | 67108864                                    
             |
| query_cache_type                | ON                                          
             |
| query_cache_wlock_invalidate    | OFF                                         
             |
| query_prealloc_size             | 8192                                        
             |
| range_alloc_block_size          | 2048                                        
             |
| read_buffer_size                | 8384512                                     
             |
| read_only                       | OFF                                         
             |
| read_rnd_buffer_size            | 16773120                                    
             |
| relay_log_purge                 | ON                                          
             |
| relay_log_space_limit           | 0                                           
             |
| rpl_recovery_rank               | 0                                           
             |
| secure_auth                     | OFF                                         
             |
| server_id                       | 1                                           
             |
| skip_external_locking           | ON                                          
             |
| skip_networking                 | OFF                                         
             |
| skip_show_database              | OFF                                         
             |
| slave_net_timeout               | 3600                                        
             |
| slave_transaction_retries       | 0                                           
             |
| slow_launch_time                | 2                                           
             |
| socket                          | /var/run/mysqld/mysqld.sock                 
             |
| sort_buffer_size                | 1073741760                                  
             |
| sql_mode                        |                                             
             |
| storage_engine                  | MyISAM                                      
             |
| sql_notes                       | ON                                          
             |
| sql_warnings                    | ON                                          
             |
| sync_binlog                     | 0                                           
             |
| sync_replication                | 0                                           
             |
| sync_replication_slave_id       | 0                                           
             |
| sync_replication_timeout        | 0                                           
             |
| sync_frm                        | ON                                          
             |
| system_time_zone                | CEST                                        
             |
| table_cache                     | 2048                                        
             |
| table_type                      | MyISAM                                      
             |
| thread_cache_size               | 150                                         
             |
| thread_stack                    | 131072                                      
             |
| time_format                     | %H:%i:%s                                    
             |
| time_zone                       | SYSTEM                                      
             |
| tmp_table_size                  | 33554432                                    
             |
| tmpdir                          | /tmp                                        
             |
| transaction_alloc_block_size    | 8192                                        
             |
| transaction_prealloc_size       | 4096                                        
             |
| tx_isolation                    | REPEATABLE-READ                             
             |
| version                         | 4.1.11-Debian_4sarge7-log                   
             |
| version_bdb                     | Sleepycat Software: Berkeley DB 4.1.24: 
(April  1, 2005) |
| version_comment                 | Source distribution                         
             |
| version_compile_machine         | i386                                        
             |
| version_compile_os              | pc-linux-gnu                                
             |
| wait_timeout                    | 28800                                       
             |
+---------------------------------+----------------------------------------------------------+
196 rows in set (0.01 sec)



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