Redis Linux系统参数最佳配置

2020-08-18 14:26:55 浏览数 (1)

1. 设置sysctl参数

代码语言:javascript复制
echo "vm.overcommit_memory=1" >> /etc/sysctl.conf

echo "vm.swappiness=1" >> /etc/sysctl.conf

/sbin/sysctl -p

2. 关闭透明大页

echo never > /sys/kernel/mm/transparent_hugepage/enabled

让其重启依然生效

echo "echo never > /sys/kernel/mm/transparent_hugepage/enabled" >>/etc/rc.local

chmod x /etc/rc.local

3. 增加redis资源限制

代码语言:javascript复制
echo "redis soft nofile 2048" >> /etc/security/limits.conf
echo "redis hard nofile 65536" >> /etc/security/limits.conf

4. 调低OOM优先级

代码语言:javascript复制
echo {score} > /proc/{pid}/oom_adj

5. TCP Backlog

默认值是511,如果Linux的tcp-backlog小于Redis设置的tcp-backlog,那么在redis启动的时候会看到如下日志:

WARNING: The TCP backlog setting of 511 cannot beenforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.

查看方法:

代码语言:javascript复制
cat/proc/sys/net/core/somaxconn

修改它:

代码语言:javascript复制
echo 511 > /proc/sys/net/core/somaxconn

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