linux sysctl参数配置详细介绍

劉豹

linux sysctl参数配置

步骤及实现：

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1	sudo vi /etc/sysctl.conf

代码：

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# Kernel sysctl configuration file for Red Hat Linux # # For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and # sysctl.conf(5) for more details.         # Controls the System Request debugging functionality of the kernel kernel.sysrq = 1   # Controls whether core dumps will append the PID to the core filename # Useful for debugging multi-threaded applications kernel.core_uses_pid = 1     # Controls the maximum size of a message, in bytes kernel.msgmnb = 65536   # Controls the default maxmimum size of a mesage queue kernel.msgmax = 65536   # Controls the maximum shared segment size, in bytes kernel.shmmax = 68719476736   # Controls the maximum number of shared memory segments, in pages kernel.shmall = 4294967296     # Controls IP packet forwarding net.ipv4.ip_forward = 0 # Controls source route verification net.ipv4.conf.default.rp_filter = 1 # Do not accept source routing net.ipv4.conf.default.accept_source_route = 0   # Controls the use of TCP syncookies net.ipv4.tcp_syncookies = 1 net.core.somaxconn = 10240 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_fin_timeout = 30 net.ipv4.tcp_keepalive_time = 300 net.ipv4.tcp_synack_retries = 3 net.ipv4.tcp_syn_retries = 3 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 net.ipv4.tcp_no_metrics_save = 0 net.core.netdev_max_backlog = 2500 net.ipv4.tcp_max_syn_backlog = 4196 net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1                    xen.independent_wallclock = 1

重启,使修改生效

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1	sudo sysctl -p

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原文链接：http://asflex.iteye.com/blog/1969873