My SQL Performane ISSue

Hi

In According to reduce the time taken to delete or update a MYSQL table,
How can i configure the memory structure of the My.cnf file or is there any other way.
When i am running batch actions the process is becoming stalled.

I have a 12Gram and Xeon2.2HTNahelm 8Cpus running, still process is getting stalled to remove 5mb file that i uploaded.
I am not getting where is the problem.

Some of the key variables declared are
binlog_cache_size               32768

bulk_insert_buffer_size       8388608

delayed_insert_limit               100

delayed_insert_timeout               300

delayed_queue_size               1000

innodb_additional_mem_pool_size 1048576

innodb_autoextend_increment       8

innodb_buffer_pool_awe_mem_mb       0

innodb_buffer_pool_size       6442450944

innodb_checksums       ON

innodb_commit_concurrency       0

innodb_concurrency_tickets       500

innodb_data_file_path               ibdata1:10M:autoextend

innodb_data_home_dir       

innodb_adaptive_hash_index       ON

innodb_doublewrite               ON

innodb_log_buffer_size               1048576
innodb_log_file_size               5242880

innodb_thread_concurrency       8
innodb_thread_sleep_delay       10000

nteractive_timeout                28800
join_buffer_size                131072
key_buffer_size                1073741824
key_cache_age_threshold        300
key_cache_block_size                1024
key_cache_division_limit        100



max_allowed_packet                1048576
max_binlog_cache_size            18446744073709547520
max_binlog_size                1073741824
max_connect_errors                10
max_connections                100
max_delayed_threads                20
max_error_count                64
max_heap_table_size                16777216
max_insert_delayed_threads        20
max_join_size                        18446744073709551615
max_length_for_sort_data        1024
max_prepared_stmt_count        16382
max_relay_log_size                0
max_seeks_for_key                18446744073709551615
max_sort_length                1024
max_sp_recursion_depth                0
max_tmp_tables                        32
max_user_connections                0
max_write_lock_count                18446744073709551615
multi_range_count                256
myisam_data_pointer_size        6
myisam_max_sort_file_size        9223372036853727232
myisam_recover_options                OFF
myisam_repair_threads                1
myisam_sort_buffer_size       8388608
myisam_stats_method              nulls_unequal
net_buffer_length               16384
net_read_timeout              30

Please let  me know this time if I can improve the perfromance or is there any issue withe the variable declarations.

Regards
Trambak