# Controls the System Request debugging functionality of the kernel kernel.sysrq = 0 # Controls whether core dumps will append the PID to the core filename. # Useful for debugging multi-threaded applications. kernel.core_uses_pid = 1 # Controls source route verification net.ipv4.conf.default.rp_filter = 1 # TCP window scaling and broken routers net.ipv4.tcp_moderate_rcvbuf=0 net.ipv4.tcp_default_win_scale=0 net.ipv4.tcp_window_scaling=1 # Mark only out of window RST segments as INVALID. This setting, among # other things, allows data to be sent with SYN packets. net.ipv4.netfilter.ip_conntrack_tcp_be_liberal=1 # Fixes dst cache overflow bug net.ipv4.route.max_size=262144 net.ipv4.tcp_congestion_control = cubic net.ipv4.tcp_moderate_rcvbuf = 0 net.core.rmem_max = 131071 net.core.wmem_max = 131071 net.ipv4.tcp_rmem = 4096 87380 4194304 net.ipv4.tcp_wmem = 4096 16384 4194304 net.netfilter.nf_conntrack_icmp_timeout = 60 fs.inotify.max_user_watches = 81920 fs.inotify.max_user_instances = 1024