标签:orm 其他 star page container tcp block issue because
我在CentOS 7.2中安装完redis,初次启动时出现了三个警告:
第一个警告:The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
第二个警告:overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add ‘vm.overcommit_memory = 1‘ to/etc/sysctl.conf and then reboot or run the command ‘sysctl vm.overcommit_memory=1‘ for this to take effect.
第三个警告:you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix thisissue run the command ‘echo never > /sys/kernel/mm/transparent_hugepage/enabled‘ as root, and add it to your /etc/rc.local in order to retain thesetting after a reboot. Redis must be restarted after THP is disabled.
考虑到redis一般都是部署在服务器上作为服务存在的。所以,本文的解决方案都是持久性配置,不是临时配置。
将net.core.somaxconn = 1024
添加到/etc/sysctl.conf
中,然后执行sysctl -p
生效配置。
将vm.overcommit_memory = 1
添加到/etc/sysctl.conf
中,然后执行sysctl -p
生效配置。
将echo never > /sys/kernel/mm/transparent_hugepage/enabled
添加到/etc/rc.local
中,然后执行source /etc/rc.local
生效配置。
redis想的挺周全的,其实解决方案已经写在警告里了,除了第一个警告的解决方案稍作了一些修改外,其他警告的解决方案其实只是对redis的提示做了一个精简。
标签:orm 其他 star page container tcp block issue because
原文地址:https://www.cnblogs.com/yourstars/p/13577167.html