Привожу список запросов mysql, которые привели к падению сервера
root@cp [/]# mysqladmin pr
+-----+----------------+-----------+--------------+---------+------+--------------+------------------------------------------------------------------------------------------------------+
| Id | User | Host | db | Command | Time | State | Info |
+-----+----------------+-----------+--------------+---------+------+--------------+------------------------------------------------------------------------------------------------------+
| 7 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 23 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 25 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 35 | miroptik_admin | localhost | miroptik_ok | Query | 0 | Sending data | select count(*) from demo_mysql_error_log |
| 36 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 37 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 41 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 65 | miroptik_admin | localhost | miroptik_ok | Query | 0 | Sending data | select count(*) from demo_mysql_error_log |
| 72 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 76 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 77 | miroptik_admin | localhost | miroptik_ok | Query | 0 | Sending data | select count(*) from demo_mysql_error_log |
| 78 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 83 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 85 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 87 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 90 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 105 | miroptik_admin | localhost | miroptik_ok | Query | 0 | Sending data | select count(*) from demo_mysql_error_log |
| 106 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 107 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 109 | miroptik_admin | localhost | miroptik_ok | Query | 0 | Sending data | select count(*) from demo_mysql_error_log |
| 113 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 128 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 135 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 136 | miroptik_admin | localhost | miroptik_ok | Query | 0 | Sending data | select count(*) from demo_mysql_error_log |
| 146 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 149 | leechprotect | localhost | leechprotect | Sleep | 1187 | | |
| 205 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 223 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 229 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 232 | miroptik_admin | localhost | miroptik_ok | Query | 0 | Sending data | select count(*) from demo_mysql_error_log |
| 250 | miroptik_admin | localhost | miroptik_ok | Query | 0 | updating | delete from demo_mysql_error_log ORDER BY tstamp ASC LIMIT 5 |
| 268 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
| 281 | miroptik_admin | localhost | miroptik_ok | Query | 0 | update | insert into demo_mysql_error_log (errors, tstamp) VALUES ('ERROR: 1054:Unknown column 'uri' |
Вам нужно оптимизировать БД miroptik_ok и сами запросы к этой БД.