Seems like the further away something is the higher the ping?

I’ve been 350ms ping according to speedtest.net lately, but when i turn my router-modem thing on off i get 11ms ping, so seems like router-modems can cause bad ping.

Anything else?

  • Helix 🧬
    15•2 years ago

    Anything else?

    There is a whole array of devices between you and the target server daemon, so any of those can be slow. Usually it looks like this from your browser to the website:

    • Browser
    • Network Manager
    • Operating System (OS)
    • Network Card
    • Cable / WiFi (aka WLAN)
    • Switch or Access Point
    • Router
    • Modem
    • Wall Plug
    • box in basement (either active, like with most DOCSIS installations, or passive with VDSL)
    • copper or fibre cable
    • box on street containing ISP network devices
    • fibre channel to local ISP backbone
    • local backbone network devices
    • more centralised peering point
    • Central Internet Exchange (CIX)
    • another CIX
    • peering point
    • data centre uplink
    • data centre core modem
    • core router
    • core switch
    • rack switch
    • hypervisor’s (HV) network card
    • HV OS and virtualisation software (e.g. XCP-ng)
    • virtual machine (VM) network interface
    • VM OS
    • server daemon for reverse proxy on VM (e.g. HAProxy, Envoy)
    • VM OS, network interface, HV, rack switch, another HV, another VM’s network interface and OS
    • web server daemon (e.g. nginx, Apache2)
    • backend server daemon (e.g. Apache Tomcat, node.js, PHP FPM, Django, Golang binary)
    • the actual application’s routing library (e.g. Nio, Gorilla)

    usual suspects for slow connections highlighted.