Single-core CPU performance cannot meet the requirement of processing NIC interruptions incurred with the increase of network I/O bandwidth. NIC multi-queue enables multiple CPUs to process ECS NIC interruptions, thereby improving network PPS and I/O performance.
继续阅读# 使用该命令直接关闭，值改为1时开启sysctl kernel.nmi_watchdog=0# 在/etc/sysctl.conf中增加如下内容，开机自动关闭kernel.nmi_watchdog = 0
1.查看是否开启event事件功能
SHOW VARIABLES LIKE 'event_scheduler';
如果显示off则开启事件:
set global event_scheduler = on;继续阅读
计划任务添加后不执行，大部分原因为command not found即环境变量问题。解决此问题，有两个方法：
1.在添加计划任务时指定加载环境变量：例,
*/5 * * * * . /etc/profile;/usr/local/bin/slowquery.o > /dev/null 2>&1继续阅读
