View the running mysql status

View the running mysql status to monitor the running mysql. One way is to view the mysql running status. Www.2cto.com (1) QPS (Queries per second) QPS = Questions (or Queries)/seconds mysql> show global status like 'Question % '; (2) TPS (transaction volume per second) TPS = (Com_commit + Com_rollback)/seconds mysql> show global status like 'com _ commit '; mysql> show global status like 'com _ rollback'; (3) key Buffer hit rate mysql> show global status like 'key % '; key_buffer_read_hits = (1-key_reads/key_read_requests) * 100% key_buffer_writ E_hits = (1-key_writes/key_write_requests) * 100% (4) InnoDB Buffer hit rate www.2cto.com mysql> show status like 'innodb _ buffer_pool_read % '; bytes = (1-bit/second) * 100% (5) Query Cache hit rate mysql> show status like 'qcache % '; Query_cache_hits = (Qcahce_hits/(Qcache_hits + Qcache_inserts) * 100%; (6) table Cache status quantity mysql> show global Status like 'open % '; compare open_tables and opend_tables values (7) Thread Cache hit rate mysql> show global status like 'thread %'; mysql> show global status like 'connections '; thread_cache_hits = (1-Threads_created/connections) * 100% (8) locked mysql> show global status like '% lock %'; Table_locks_waited/Table_locks_immediate = 0.3% if the ratio is large, the blocking caused by table locks is serious. Innodb_row_lock_waits innodb row locks are too large, which may be caused by gap locks (9) replication delay m. Ysql> show slave status view latency (10) Tmp Table status (temporary Table status) mysql> show status like 'create _ tmp % '; Created_tmp_disk_tables/Created_tmp_tables ratio should not exceed 10%, if the value of Created_tmp_tables is large, it may be that there are too many sort sentences or the number of connected sentences is not optimized enough (11) Binlog Cache Usage mysql> show status like 'binlog _ cache % '; if the Binlog_cache_disk_use value is not 0, you may need to increase the binlog_cache_size (12) Innodb_log_waits volume. mysql> show status like 'innodb _ log_waits '; Innodb_log_w If the aits value is not equal to 0, it indicates that innodb log buffer is waiting for space shortage, for example, the command >#show global status; although you can use: ># show global status like %... %.