Ping

Transcript

1. View Slide

2. In multiplayer online video
   games, ping (not to be
   confused with frames per
   second) refers to the
   network latency between
   a player's computer
   (client), and either the
   game server or another
   client (i.e. peer)
   

   View Slide

3. This could be
   reported
   quantitatively
   as an average
   time in
   milliseconds, or
   qualitatively as
   low ping or high
   ping.
   

   View Slide

4. Having a low ping is
   always desirable
   because lower latency
   provides smoother
   gameplay by allowing
   faster updates of game
   data.
   

   View Slide

5. Ping is often conflated
   with lag. One may "lag
   out" due to unacceptably
   high ping. Servers will
   often disconnect a client
   if the ping is too high and
   it poses a detriment to
   others' gameplay..
   

   View Slide

6. Similarly, client software will
   often mandate disconnection
   if the ping is too high. A high
   ping is not the result of lag;
   rather, a high ping causes
   lag. It may also make
   servers crash because of
   the stability.
   

   View Slide

7. Rather than using the
   traditional ICMP echo
   request and reply packets
   to determine ping times,
   game programmers often
   instead build their own
   latency detection into
   existing game packets
   (usually based on the
   UDP protocol).
   

   View Slide

8. Some factors that might affect ping include:
   • network protocol engineering,
   • Internet connection speed
   • the quality of a user's Internet service
   provider
   • the configuration of firewalls.
   

   View Slide

9. Ping is also
   affected by
   geographical
   location.
   

   View Slide

10. References
    • http://en.wikipedia.org/wiki/Ping_(networking_utility)
    • http://farm5.staticflickr.com/4007/4576023305_57d6e1e728_o.
    png
    • http://th03.deviantart.net/fs70/PRE/f/2011/288/7/a/i_know_th
    at_feel_bro_by_rober_raik-d4cxn5a.png
    • http://upload.wikimedia.org/wikipedia/commons/thumb/6/6e
    /Sloth_(PSF).png/1272px-Sloth_(PSF).png
    • https://research.cs.vt.edu/3di/sites/default/files/FinalTechniq
    ue.png
    • http://www.goodcontroller.com/blog/wp-
    content/uploads/2011/04/Molloy3_Main.1.png
    

    View Slide