Linux operating system practice optimization Kernel Parameter Optimization (instance), linux Kernel

Linux operating system practice optimization Kernel Parameter Optimization (instance), linux Kernel

Abstract: Linux Server Kernel Parameter Optimization high concurrency linux production server Kernel Parameter Optimization Case Study: This optimization is suitable for apache, nginx, squid and other web applications, special services may need to be slightly adjusted. The so-called kernel optimization is mainly the System Kernel Parameter Optimization for business service applications in Linux systems. There is no special standard for the optimization, the following describes the linux kernel Optimization in a common production environment for your reference. conf Add the following kernel parameters to the end of the configuration file [aliyunzixun@xxx.comscripts] # vi/etc/

Linux Server Kernel Parameter Optimization

Case study of Kernel Parameter Optimization for High-concurrency linux production servers

Note: This optimization is suitable for apache, nginx, squid, and other web applications. Special Services may need to be slightly adjusted.

The so-called kernel optimization is mainly the System Kernel Parameter Optimization for business service applications in Linux systems. There is no special standard for the optimization, the following describes how to optimize the kernel of linux in a common production environment for your reference:

Open/etc/sysctl. conf and add the following kernel parameters to the end of the configuration file.

[Aliyunzixun@xxx.comscripts] # vi/etc/sysctl. conf

Net. ipv4.tcp _ fin_timeout = 2

Net. ipv4.tcp _ tw_reuse = 1

Net. ipv4.tcp _ tw_recycle = 1

Net. ipv4.tcp _ syncookies = 1

Net. ipv4.tcp _ keepalive_time = 600

Net. ipv4.ip _ local_port_range = 4000 65000

Net. ipv4.tcp _ max_syn_backlog = 16384

Net. ipv4.tcp _ max_tw_buckets = 36000

Net. Route 4.route. gc_timeout = 100

Net. ipv4.tcp _ syn_retries = 1

Net. ipv4.tcp _ synack_retries = 1

Net. core. somaxconn = 16384

Net. core. netdev_max_backlog = 16384

Net. ipv4.tcp _ max_orphans = 16384

# The following parameters are used to optimize the iptables firewall. If the firewall does not have a meeting prompt, ignore it.

Net. ipv4.ip _ conntrack_max = 25000000

Net. ipv4.netfilter. ip_conntrack_max = 25000000

Net. ipv4.netfilter. ip_conntrack_tcp_timeout_established = 180

Net. ipv4.netfilter. ip_conntrack_tcp_timeout_time_wait = 120

Net. ipv4.netfilter. ip_conntrack_tcp_timeout_close_wait = 60

Net. ipv4.netfilter. ip_conntrack_tcp_timeout_fin_wait = 120

[Aliyunzixun@xxx.comscripts] # sysctl-p

Reload Kernel Parameters

The above is an explanation of Kernel Parameter Optimization for linux operating system practice optimization. For more information about Kernel optimization, see the Linux operating system practice parameter search function in the upper-right corner.