2 description "Role applied to all tile cache servers"
8 :members => [:tomh, :grant, :matt, :jburgess]
16 :tcp_fastopen_key => "tile"
22 :network_conntrack_time_wait => {
23 :comment => "Only track completed connections for 30 seconds",
25 "net.netfilter.nf_conntrack_tcp_timeout_time_wait" => "30"
28 :network_conntrack_max => {
29 :comment => "Increase max number of connections tracked",
31 "net.netfilter.nf_conntrack_max" => "524288"
34 :network_local_port_range => {
35 :comment => "Increase available local port range",
37 "net.ipv4.ip_local_port_range" => "4096 64000"
40 :kernel_tfo_listen_enable => {
41 :comment => "Enable TCP Fast Open for listening sockets",
43 "net.ipv4.tcp_fastopen" => 3
46 :squid_swappiness => {
47 :comment => "Prefer not to swapout to free memory",
49 "vm.swappiness" => "30"
53 :comment => "Tune scheduler",
55 "kernel.sched_min_granularity_ns" => "10000000",
56 "kernel.sched_wakeup_granularity_ns" => "15000000"