order of preference, my.cnf, $MYSQL_TCP_PORT, /etc/services, built-ixn default (3306). -u, --user=name User for login if not current user. -p, --password[=name] Password to use when connecting to server. If pa
QuestionsThe number of statements executed by the server. This includes only statements sent to the server by clients and not statements executed within stored programs, unlike theQueriesvariable. This variable does not countCOM_PING,COM_STATISTICS,COM_STMT_PREPARE,COM_STMT_CLOSE, orCOM_STMT_RESETco...
4 0 queries inside InnoDB, 0 queriesinqueue5 1read views open inside InnoDB6 Main thread process no. 10099, id 88021936, state: waitingforserver activity7 Number of rows inserted 143, updated 3000041, deleted 0, read 24865563 8 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads...
Bytes_sent The number of bytes sent to all clients. Caching_sha2_password_rsa_public_key The public key used by the caching_sha2_password authentication plugin for RSA key pair-based password exchange. The value is nonempty only if the server successfully initializes the private and public...
bytesFromServer: integer, number of bytes sent from server to the client over the given connection BytesToServer: integer, number of bytes sent from the client to the server over the given connection sourceAddress: string, adddress:port pair of the connection source (client) destinationAddre...
高性能 MySQL已经成为数据库工程社区多年的一部分,之前的版本分别在 2004 年、2008 年和 2012 年发布。在这些先前的版本中,目标始终是通过专注于深度内部设计,解释各种调整设置的含义,并为用户提供改变这些设置的知识,教导开发人员和管理员如何优化 MySQL 以获得最佳性能。本版保持了相同的目标,但侧重点不同。
[root@docker35 ~]# mysqlslap -uwr -plhr -h192.168.68.136 -P6033 --create-schema=lhrmysqlslap --auto-generate-sql --auto-generate-sql-load-type=read --number-of-queries=100000 mysqlslap: [Warning] Using a password on the command line interface can be insecure. ...
十二、Communications link failure The last packet sent successfully to the server was XXX milliseconds ago. The driver has not received any packets from the server. 原因1:如果was XXX milliseconds ago的XXX是0,那么意味数据库连不上了。可能的原因有两个:1、数据库发生了迁移,原数据源地址不可用 2、...
connect_timeout: The number of seconds that the mysqld server waits for a connect packet before responding with Bad handshake. The default value is 10 seconds as of MySQL 5.0.52 and 5 seconds before that mysql 的基本原理是有个监听线程循环接收请求,当有请求来时,创建线程(或者从线程池中取)来...
高性能 MySQL已经成为数据库工程社区多年的一部分,之前的版本分别在 2004 年、2008 年和 2012 年发布。在这些先前的版本中,目标始终是通过专注于深度内部设计,解释各种调整设置的含义,并为用户提供改变这些设置的知识,教导开发人员和管理员如何优化 MySQL 以获得最佳性能。本版保持了相同的目标,但侧重点不同。