6 ms·

Exactly. And even if there is, there may be: - a small bandwidth - a limited contract - a huge ping - regular network errors And even with a good, unlimit

Exactly. And even if there is, there may be: - a small bandwidth - a limited contract - a huge ping - regular network errors And even with a good, unlimited network, local will always be snappier than doing a round trip.

goodpoint 5y ago
s/ping/latency/
- BiteCode_dev 5y ago
  I've always been unclear of the difference between all the terms. Whats the diff between "ping", "jitter" and "latency"?
  - adrianN 5y ago
    ping is what the ping program reports, which, depending on the QoS settings the provider has, can be very different from the roundtrip time of packets you actually care about.
    - BiteCode_dev 5y ago
      Can you explain to me why and how this can be different?
      - adrianN 5y ago
        Your provider can for example filter out all ICMP packets giving you timeouts for "ping", but you can still reach the host just fine with other protocols. Similarly your provider probably prioritizes protocols that require low latency like VoIP over ICMP packets.
        Dylan16807 5y ago
        Alternatively, they might prioritize small packets and ping will be misleadingly fast compared to bigger data flows.
        Hauntingjackal 5y ago
        Another possibility too is that your pings don't experience any packet losses, whereas actual data does which would increase the real latency. In short, there are many potential differences between ping and actual latency.
    - goodpoint 5y ago
      Not at all, ping is just a nickname for an ICMP echo message and the name of the /usr/bin/ping program. The output of the program are RTT minimum, max, average, mean deviation and percentage of packet loss. You can also measure latency over UDP and TCP using other tools. For 99% of practical use cases there is actually no meaningful difference.
nicbou 5y ago
On my Berlin-Poznan trips, I sometimes had a 10s average ping, and an equally absurd packet loss rate. SSH worked great, but the regular internet was unusable. I design my websites with those trips in mind.

goodpoint 5y ago

s/ping/latency/

BiteCode_dev 5y ago
I've always been unclear of the difference between all the terms. Whats the diff between "ping", "jitter" and "latency"?
- adrianN 5y ago
  ping is what the ping program reports, which, depending on the QoS settings the provider has, can be very different from the roundtrip time of packets you actually care about.
  - BiteCode_dev 5y ago
    Can you explain to me why and how this can be different?
    - adrianN 5y ago
      Your provider can for example filter out all ICMP packets giving you timeouts for "ping", but you can still reach the host just fine with other protocols. Similarly your provider probably prioritizes protocols that require low latency like VoIP over ICMP packets.
      - Dylan16807 5y ago
        Alternatively, they might prioritize small packets and ping will be misleadingly fast compared to bigger data flows.
        Hauntingjackal 5y ago
        Another possibility too is that your pings don't experience any packet losses, whereas actual data does which would increase the real latency. In short, there are many potential differences between ping and actual latency.
  - goodpoint 5y ago
    Not at all, ping is just a nickname for an ICMP echo message and the name of the /usr/bin/ping program. The output of the program are RTT minimum, max, average, mean deviation and percentage of packet loss. You can also measure latency over UDP and TCP using other tools. For 99% of practical use cases there is actually no meaningful difference.

nicbou 5y ago

On my Berlin-Poznan trips, I sometimes had a 10s average ping, and an equally absurd packet loss rate. SSH worked great, but the regular internet was unusable. I design my websites with those trips in mind.