I meant "local" as in "not on the other side of a continent". Here's me pinging a nearby DNS server that's 40 miles away from my desk:

  % ping -c 10 -A 4.2.2.1
  PING 4.2.2.1 (4.2.2.1) 56(84) bytes of data.
  64 bytes from 4.2.2.1: icmp_req=1 ttl=56 time=3.24 ms
  64 bytes from 4.2.2.1: icmp_req=2 ttl=56 time=2.88 ms
  64 bytes from 4.2.2.1: icmp_req=3 ttl=56 time=2.95 ms
  64 bytes from 4.2.2.1: icmp_req=4 ttl=56 time=2.90 ms
  64 bytes from 4.2.2.1: icmp_req=5 ttl=56 time=2.95 ms
  64 bytes from 4.2.2.1: icmp_req=6 ttl=56 time=2.91 ms
  64 bytes from 4.2.2.1: icmp_req=7 ttl=56 time=2.90 ms
  64 bytes from 4.2.2.1: icmp_req=8 ttl=56 time=2.87 ms
  64 bytes from 4.2.2.1: icmp_req=9 ttl=56 time=2.94 ms
  64 bytes from 4.2.2.1: icmp_req=10 ttl=56 time=2.94 ms

  --- 4.2.2.1 ping statistics ---
  10 packets transmitted, 10 received, 0% packet loss, time 1806ms
  rtt min/avg/max/mdev = 2.875/2.952/3.247/0.112 ms, ipg/ewma 200.705/3.019 ms

I can't imagine why a local websocket echo service should be 5x slower that this.