---
# Default-Sysctl-Werte fuer Streaming-VMs.
# Pro Host/Gruppe ueberschreibbar via group_vars/host_vars (z.B. group_vars/vps).
sysctl_params:
  - { key: net.core.rmem_default,              value: "262144" }
  - { key: net.core.wmem_default,              value: "262144" }
  - { key: net.core.rmem_max,                  value: "67108864" }
  - { key: net.core.wmem_max,                  value: "67108864" }
  - { key: net.ipv4.tcp_rmem,                  value: "4096 87380 67108864" }
  - { key: net.ipv4.tcp_wmem,                  value: "4096 65536 67108864" }
  - { key: net.ipv4.tcp_window_scaling,        value: "1" }
  - { key: net.ipv4.tcp_congestion_control,    value: "bbr" }
  - { key: net.ipv4.tcp_slow_start_after_idle, value: "0" }
  - { key: net.ipv4.tcp_fastopen,              value: "3" }
  - { key: net.core.netdev_max_backlog,        value: "16384" }
  - { key: net.core.somaxconn,                 value: "4096" }
  - { key: net.ipv4.tcp_notsent_lowat,         value: "16384" }
  - { key: net.ipv4.tcp_fin_timeout,           value: "15" }
  - { key: net.ipv4.tcp_tw_reuse,              value: "1" }
  - { key: vm.swappiness,                      value: "1" }
  - { key: vm.dirty_ratio,                     value: "15" }
  - { key: vm.dirty_background_ratio,          value: "5" }
  - { key: net.ipv4.tcp_mtu_probing,           value: "1" }
  - { key: net.ipv4.ip_forward,                value: "1" }
  - { key: net.ipv6.conf.all.forwarding,       value: "1" }