high perf tuning freebsd webservers - @jssjr

perf_tuning.rb

if node['platform'] == "freebsd"
  # load the http accept filter into the kernel
  freebsd_kernel_module "accf_http"

  # increase max files
  freebsd_sysctl "kern.maxfiles" do
    value 131072
  end

  # increase the max pending socket limit
  freebsd_sysctl "kern.ipc.somaxconn" do
    value 1024
  end

  # Recycle FIN_WAIT_2 sockets faster
  freebsd_sysctl "net.inet.tcp.fast_finwait2_recycle" do
    value 1
  end

  # Decrease FIN_WAIT timeout to 30s (default: 60s)
  freebsd_sysctl "net.inet.tcp.finwait2_timeout" do
    value 30000
  end

  # Enable keepalives for dynamic rules
  freebsd_sysctl "net.inet.ip.fw.dyn_keepalive" do
    value 1
  end

  # Decrease max segment lifetime (default: 60s)
  # Note: TIME_WAIT sockets live for 2*MSL
  freebsd_sysctl "sysctl net.inet.tcp.msl" do
    value 30000
  end

  # Increase the number of TIME_WAIT sockets allowed
  freebsd_sysctl "net.inet.tcp.maxtcptw" do
    value 16384
  end

  # Increase the overall number of sockets allowed
  freebsd_sysctl "net.inet.ip.portrange.first" do
    value 16384 # default: 49152
  end
  freebsd_sysctl "net.inet.ip.portrange.last" do
    value 65535
  end

  # Don't go into TIME_WIAT for local connections
  freebsd_sysctl "sysctl net.inet.tcp.nolocaltimewait" do
    value 1
  end
end