Aborted Percona Mysql(slave server).

We are having a problem with percona service.(aborted when 10 query/sec(on paralell)).
that query target table are 20 million records(searched KEY VARCHAR(128) ).

<i think that problem mean #1250762.>

using Percona XtraDB ([URL]http://www.percona.com[/URL]) 5.5.34-rel32.0. on a Server With 2-16 cores CPU and 64 GB RAM. 140831 23:50:11 InnoDB: Assertion failure in thread 140175670867712 in file buf0flu.c line 1608 InnoDB: Failing assertion: buf_page_in_file(bpage) InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to [URL]http://bugs.mysql.com[/URL]. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: [URL="http://dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html"]http://dev.mysql.com/doc/refman/5.5/...-recovery.html[/URL] InnoDB: about forcing recovery. 14:50:11 UTC - mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. Please help us make Percona Server better by reporting any bugs at [URL]http://bugs.percona.com/[/URL]

key_buffer_size=536870912
read_buffer_size=1048576
max_used_connections=7
max_threads=501
thread_count=1
connection_count=1
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1575600 K bytes of memory
Hope that’s ok; if not, decrease some variables in the equation.

Thread pointer: 0x0
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong…
stack_bottom = 0 thread_stack 0x30000
/usr/sbin/mysqld(my_print_stacktrace+0x35)[0x7bc5d5]
/usr/sbin/mysqld(handle_fatal_signal+0x4b4)[0x6967a4]
/lib64/libpthread.so.0[0x3e47e0f500]
/lib64/libc.so.6(gsignal+0x35)[0x3e47a328a5]
/lib64/libc.so.6(abort+0x175)[0x3e47a34085]
/usr/sbin/mysqld[0x87325b]
/usr/sbin/mysqld[0x8739aa]
/usr/sbin/mysqld[0x873c4d]
/usr/sbin/mysqld[0x81baef]
/lib64/libpthread.so.0[0x3e47e07851]
/lib64/libc.so.6(clone+0x6d)[0x3e47ae890d]
You may download the Percona Server operations manual by visiting
http://www.percona.com/software/percona-server/. You may find information
in the manual which will help you identify the cause of the crash.

thanks.

<mysql@SHOW VARIABLES>
±------------------------±----------+
| Variable_name | Value |
±------------------------±----------+
| bulk_insert_buffer_size | 67108864 |
| join_buffer_size | 2097152 |
| key_buffer_size | 536870912 |
| myisam_sort_buffer_size | 4194304 |
| preload_buffer_size | 32768 |
| read_buffer_size | 1048576 |
| read_rnd_buffer_size | 1048576 |
| sort_buffer_size | 1048576 |
±------------------------±----------+
| pseudo_thread_id | 5511 |
| thread_cache_size | 1000 |
| thread_concurrency | 8 |
| thread_handling | pool-of-threads |
| thread_pool_high_prio_tickets | 0 |
| thread_pool_idle_timeout | 60 |
| thread_pool_max_threads | 500 |
| thread_pool_oversubscribe | 3 |
| thread_pool_size | 32 |
| thread_pool_stall_limit | 500 |
| thread_stack | 196608 |
| thread_statistics | OFF |
±----------------------------------------±----------------+
| have_innodb | YES |
| ignore_builtin_innodb | OFF |
| innodb_adaptive_flushing | ON |
| innodb_adaptive_flushing_method | keep_average |
| innodb_adaptive_hash_index | ON |
| innodb_adaptive_hash_index_partitions | 1 |
| innodb_additional_mem_pool_size | 25165824 |
| innodb_autoextend_increment | 256 |
| innodb_autoinc_lock_mode | 1 |
| innodb_blocking_buffer_pool_restore | OFF |
| innodb_buffer_pool_instances | 1 |
| innodb_buffer_pool_populate | OFF |
| innodb_buffer_pool_restore_at_startup | 0 |
| innodb_buffer_pool_shm_checksum | ON |
| innodb_buffer_pool_shm_key | 0 |
| innodb_buffer_pool_size | 45097156608 |
| 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 | ibdata2:1G:autoextend:max:64G |
| innodb_data_home_dir | /var/lib/mysql |
| innodb_dict_size_limit | 0 |
| innodb_doublewrite | ON |
| innodb_doublewrite_file | |
| innodb_fake_changes | OFF |
| innodb_fast_checksum | OFF |
| innodb_fast_shutdown | 0 |
| innodb_file_format | Barracuda |
| innodb_file_format_check | ON |
| innodb_file_format_max | Barracuda |
| innodb_file_per_table | ON |
| innodb_flush_log_at_trx_commit | 2 |
| innodb_flush_method | O_DIRECT |
| innodb_flush_neighbor_pages | none |
| innodb_force_load_corrupted | OFF |
| innodb_force_recovery | 0 |
| innodb_ibuf_accel_rate | 100 |
| innodb_ibuf_active_contract | 1 |
| innodb_ibuf_max_size | 22548561920 |
| innodb_import_table_from_xtrabackup | 0 |
| innodb_io_capacity | 40000 |
| innodb_kill_idle_transaction | 0 |
| innodb_large_prefix | OFF |
| innodb_lazy_drop_table | 0 |
| innodb_lock_wait_timeout | 420 |
| innodb_locking_fake_changes | ON |
| innodb_locks_unsafe_for_binlog | OFF |
| innodb_log_block_size | 4096 |
| innodb_log_buffer_size | 67108864 |
| innodb_log_file_size | 1073741824 |
| innodb_log_files_in_group | 3 |
| innodb_log_group_home_dir | ./ |
| innodb_max_bitmap_file_size | 104857600 |
| innodb_max_changed_pages | 1000000 |
| innodb_max_dirty_pages_pct | 90 |
| innodb_max_purge_lag | 0 |
| innodb_merge_sort_block_size | 1048576 |
| innodb_mirrored_log_groups | 1 |
| innodb_old_blocks_pct | 37 |
| innodb_old_blocks_time | 0 |
| innodb_open_files | 600 |
| innodb_page_size | 16384 |
| innodb_print_all_deadlocks | OFF |
| innodb_purge_batch_size | 20 |
| innodb_purge_threads | 1 |
| innodb_random_read_ahead | OFF |
| innodb_read_ahead | none |
| innodb_read_ahead_threshold | 56 |
| innodb_read_io_threads | 10 |
| 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 | 0 |
| innodb_thread_concurrency_timer_based | OFF |
| innodb_thread_sleep_delay | 10000 |
| innodb_track_changed_pages | OFF |
| innodb_use_atomic_writes | OFF |
| 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 | 5.5.34-rel32.0 |
| innodb_write_io_threads | 16 |
±------------------------------------------±------------------------------+

Hi,

It seems, you are hitting this bug. https://bugs.launchpad.net/percona-server/+bug/1227581
Do you have any other test server where you can upgrade the percona server to 5.5.35 or latest version and check?