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linux sysctl參數配置

linux sysctl參數配置   引用 sudo vi /etc/sysctl.conf   Java代碼   # 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     引用 重啟,使修改生效   Java代碼   sudo sysctl -p  
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