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Broadband Speed

  • 29-11-2009 1:22pm
    #1
    markmcg
    Registered Users, Registered Users 2 Posts: 148 ✭✭


    I downloaded a 700MB file last night. I have 7MB Eircom Broadband.
    It took me 17 mins and 36 seconds. Is that fast?


Comments

  • #2
    ro2
    Registered Users, Registered Users 2 Posts: 562 ✭✭✭ro2


    markmcg wrote: »
    I downloaded a 700MB file last night. I have 7MB Eircom Broadband.
    It took me 17 mins and 36 seconds. Is that fast?

    It's 678KB/s, which is not bad.


  • #3
    ArseBurger
    Registered Users, Registered Users 2 Posts: 647 ✭✭✭ArseBurger


    ro2 wrote: »
    It's 678KB/s, which is not bad.

    I'd love to know how you came to that number...


  • #4
    markmcg
    Registered Users, Registered Users 2 Posts: 148 ✭✭markmcg


    I normally getting just over 700 kb/s
    Is that right?


  • #5
    ArseBurger
    Registered Users, Registered Users 2 Posts: 647 ✭✭✭ArseBurger


    kb/s or KB/s? The old bits versus bytes question. I'll assume KBps

    Doing a straight calculation that comes in about 5.6 Mbps.

    A nice visual tool for measuring current throughput in bits per second is:

    http://www.metal-machine.de/readerror/

    However, taking IP overhead and preamble into account and assuming that a constant download uses a large data payload and ignoring ATM / SONET / etc... overhead - your download of 700MB in approximately 17 minutes is in and around 7Mbps.

    Pretty damn good for a contended residential service - assuming that's what it is.

    What most people forget is that each IP packet has overhead. And that overhead is variable depending up many many factors.

    Google IP overhead and click the first link.


  • #6
    robbie_998
    Closed Accounts Posts: 4,222 ✭✭✭robbie_998


    markmcg wrote: »
    I normally getting just over 700 kb/s
    Is that right?

    well that would be more than 7 megs so its good :)


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