Hi board!
i have a big problem with my mysql db server!
i have a site with perm 1000 logged in users, and a lot of selects.
All Servers are quad core amd, with 8GB RAM.
i got 2 apache2 servers with this config:
<IfModule mpm_prefork_module>
StartServers 10
MinSpareServers 5
MaxSpareServers 10
# ServerLimit 1000
MaxClients 256
MaxRequestsPerChild 10000
</IfModule>
here is my my.cnf
tmp_table_size=128M
max_connections=500
wait_timeout=20
connect_timeout=10
interactive_timeout=120
join_buffer_size=16M
query_cache_size=128M
query_cache_limit=16M
max_allowed_packet=16M
table_cache=2048
read_buffer_size=16M
read_rnd_buffer_size=8M
sort_buffer_size=16M
key_buffer=128M
key_buffer_size=64M
innodb_buffer_pool_size=6G
thread_cache_size=60
show status;
| Handler_update | 0 |
| Handler_write | 131 |
| Innodb_buffer_pool_pages_data | 161876 |
| Innodb_buffer_pool_pages_dirty | 772 |
| Innodb_buffer_pool_pages_flushed | 2343443 |
| Innodb_buffer_pool_pages_free | 214922 |
| Innodb_buffer_pool_pages_latched | 0 |
| Innodb_buffer_pool_pages_misc | 16418 |
| Innodb_buffer_pool_pages_total | 393216 |
| Innodb_buffer_pool_read_ahead_rnd | 11 |
| Innodb_buffer_pool_read_ahead_seq | 1042 |
| Innodb_buffer_pool_read_requests | 29087218162 |
| Innodb_buffer_pool_reads | 118486 |
| Innodb_buffer_pool_wait_free | 0 |
| Innodb_buffer_pool_write_requests | 37933475 |
| Innodb_data_fsyncs | 2246159 |
| Innodb_data_pending_fsyncs | 0 |
| Innodb_data_pending_reads | 0 |
| Innodb_data_pending_writes | 0 |
| Innodb_data_read | 2603061248 |
| Innodb_data_reads | 125581 |
| Innodb_data_writes | 3889764 |
| Innodb_data_written | 90657998848 |
| Innodb_dblwr_pages_written | 2343443 |
| Innodb_dblwr_writes | 37545 |
| Innodb_log_waits | 0 |
| Innodb_log_write_requests | 27518465 |
| Innodb_log_writes | 2157491 |
| Innodb_os_log_fsyncs | 2180480 |
| Innodb_os_log_pending_fsyncs | 0 |
| Innodb_os_log_pending_writes | 0 |
| Innodb_os_log_written | 13859563008 |
| Innodb_page_size | 16384 |
| Innodb_pages_created | 3131 |
| Innodb_pages_read | 158745 |
| Innodb_pages_written | 2343443 |
| Innodb_row_lock_current_waits | 0 |
| Innodb_row_lock_time | 24120 |
| Innodb_row_lock_time_avg | 3 |
| Innodb_row_lock_time_max | 177 |
| Innodb_row_lock_waits | 7448 |
| Innodb_rows_deleted | 101632 |
| Innodb_rows_inserted | 277513 |
| Innodb_rows_read | 14181145169 |
| Innodb_rows_updated | 2102680 |
| Key_blocks_not_flushed | 0 |
| Key_blocks_unused | 90713 |
| Key_blocks_used | 16459 |
| Key_read_requests | 5830242 |
| Key_reads | 16854 |
| Key_write_requests | 91577 |
| Key_writes | 89004 |
| Last_query_cost | 0.000000 |
| Max_used_connections | 401 |
| Ndb_cluster_node_id | 0 |
| Ndb_config_from_host | |
| Ndb_config_from_port | 0 |
| Ndb_number_of_data_nodes | 0 |
| Not_flushed_delayed_rows | 0 |
| Open_files | 81 |
| Open_streams | 0 |
| Open_tables | 1425 |
| Opened_tables | 0 |
| Prepared_stmt_count | 0 |
| Qcache_free_blocks | 16190 |
| Qcache_free_memory | 93146896 |
| Qcache_hits | 9162852 |
| Qcache_inserts | 9730832 |
| Qcache_lowmem_prunes | 9640 |
| Qcache_not_cached | 2749121 |
| Qcache_queries_in_cache | 20430 |
| Qcache_total_blocks | 57626 |
| Questions | 28299337 |
| 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 | 0 |
| Slow_queries | 0 |
| Sort_merge_passes | 0 |
| Sort_range | 0 |
| Sort_rows | 0 |
| Sort_scan | 0 |
| Ssl_accept_renegotiates | 0 |
| Ssl_accepts | 0 |
| Ssl_callback_cache_hits | 0 |
| Ssl_cipher | |
| Ssl_cipher_list | |
| Ssl_client_connects | 0 |
| Ssl_connect_renegotiates | 0 |
| Ssl_ctx_verify_depth | 0 |
| Ssl_ctx_verify_mode | 0 |
| Ssl_default_timeout | 0 |
| Ssl_finished_accepts | 0 |
| Ssl_finished_connects | 0 |
| Ssl_session_cache_hits | 0 |
| Ssl_session_cache_misses | 0 |
| Ssl_session_cache_mode | NONE |
| Ssl_session_cache_overflows | 0 |
| Ssl_session_cache_size | 0 |
| Ssl_session_cache_timeouts | 0 |
| Ssl_sessions_reused | 0 |
| Ssl_used_session_cache_entries | 0 |
| Ssl_verify_depth | 0 |
| Ssl_verify_mode | 0 |
| Ssl_version | |
| Table_locks_immediate | 22830484 |
| Table_locks_waited | 1209 |
| Tc_log_max_pages_used | 0 |
| Tc_log_page_size | 0 |
| Tc_log_page_waits | 0 |
| Threads_cached | 43 |
| Threads_connected | 22 |
| Threads_created | 5738 |
| Threads_running | 8 |
| Uptime | 92523 |
+-----------------------------------+-------------+
my problem is, i get every 30-50mins a 100% connections usage, with more then 400 used connections! all Clients get a Service unnavailabla error @ this time.
if all is normal, i get like 5-8% connection usage.
maybe someone can help me out here!
we can talk about ssh access too.
regards!
S.
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