奇怪 Mysql 变慢,但是CPU Memory IO 都是正常的 show processlist;看看有无长时间进程uptime看看机器负载如何 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 没有,load 负载都是正常的 在 1.0 下面,4个CPU row/row0mysql.c 1746 对应到下面代码的 trx->dict_operation_lock_mode = 0;/*********************************************************************//**Unlocks the data dictionary exclusive lock. */UNIV_INTERNvoidrow_mysql_unlock_data_dictionary(/*=============================*/ trx_t* trx) /*!< in/out: transaction */{ ut_a(trx->dict_operation_lock_mode == RW_X_LATCH); /* Serialize data dictionary operations with dictionary mutex: no deadlocks can occur then in these operations */ mutex_exit(&(dict_sys->mutex)); rw_lock_x_unlock(&dict_operation_lock); trx->dict_operation_lock_mode = 0;} select now()是用的本机客户端执行的吗 top - 15:41:07 up 23 days, 21:57, 3 users, load average: 0.99, 0.61, 0.55Tasks: 120 total, 1 running, 119 sleeping, 0 stopped, 0 zombieCpu0 : 29.3%us, 0.0%sy, 0.0%ni, 69.0%id, 1.3%wa, 0.0%hi, 0.3%si, 0.0%stCpu1 : 2.7%us, 0.0%sy, 0.0%ni, 97.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%stCpu2 : 35.3%us, 0.3%sy, 0.0%ni, 63.0%id, 1.3%wa, 0.0%hi, 0.0%si, 0.0%stCpu3 : 35.5%us, 0.3%sy, 0.0%ni, 63.9%id, 0.3%wa, 0.0%hi, 0.0%si, 0.0%stMem: 20301608k total, 15821740k used, 4479868k free, 66508k buffersSwap: 2097144k total, 82096k used, 2015048k free, 242436k cached 如何取得所需数据的顺序 mysql数据库转移服务器后乱码 在mysql命令行中使用source MysqlCC不能显示中文的问题。 在线等,mysql模糊查找!!! 急,一个简单问题,如果更改MYSQL里表的字段属性,我想把 varchar(10)改为varchar(15)!在线等,谢谢。! mysql 两个字段拼起来查怎么做 一个联合索引的问题 Mysql 语句执行顺序疑问 怎么将文件夹名字和文件名做分别作为一列导入到Mysql数据库中 Mysql sp自动执行的问题 数据库主从,为什么在sqlyog里不起作用,但在命令行起作用呢
对应到下面代码的 trx->dict_operation_lock_mode = 0;/*********************************************************************//**
Unlocks the data dictionary exclusive lock. */
UNIV_INTERN
void
row_mysql_unlock_data_dictionary(
/*=============================*/
trx_t* trx) /*!< in/out: transaction */
{
ut_a(trx->dict_operation_lock_mode == RW_X_LATCH); /* Serialize data dictionary operations with dictionary mutex:
no deadlocks can occur then in these operations */ mutex_exit(&(dict_sys->mutex));
rw_lock_x_unlock(&dict_operation_lock); trx->dict_operation_lock_mode = 0;
}
top - 15:41:07 up 23 days, 21:57, 3 users, load average: 0.99, 0.61, 0.55
Tasks: 120 total, 1 running, 119 sleeping, 0 stopped, 0 zombie
Cpu0 : 29.3%us, 0.0%sy, 0.0%ni, 69.0%id, 1.3%wa, 0.0%hi, 0.3%si, 0.0%st
Cpu1 : 2.7%us, 0.0%sy, 0.0%ni, 97.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 35.3%us, 0.3%sy, 0.0%ni, 63.0%id, 1.3%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 35.5%us, 0.3%sy, 0.0%ni, 63.9%id, 0.3%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 20301608k total, 15821740k used, 4479868k free, 66508k buffers
Swap: 2097144k total, 82096k used, 2015048k free, 242436k cached