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rataflimmy
Lv 4
rataflimmy asked in Computers & InternetComputer Networking · 1 decade ago

How do you calculate for the bandwidth requirement of a website?

i know it has to do with page views and the size of each page, but how do you calculate those two as well?

Thanks!!

Update:

thanks guys, a lot! anyway, just to add some details, it's going to be a very simple, no frills, menu-driven website aimed at users in the provinces of our country (note: mostly dial-up users), so there won't be any flash animations or even images. expected use is about 10 concurrent users.

however, there will be an image-heavy part, something like google earth or google maps, but it's only for top management, who are on wi-fi. how about that?

Update 2:

it's going to be built on PHP, by the way.

2 Answers

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  • Zach
    1 decade ago
    Favorite Answer

    Calculating bandwidth usage is very simple - it's just the file size multiplied by the number of loads (views). However, sometimes it's easy to forget to include all the files. (BTW: many people do not understand that K is kilo and that file size of 30000 is about 30Kb i.e. for estimation divide file size by 1000 (or 1024 to be exact)).

    This page will help when estimating monthly bandwidth usage. Of course, it's only an estimation because the output depends on the 'best guess' when entering data.

    For a web page, it's just the total file size for all the .html, .txt, images, sounds, etc that are included in the page .. x .. times the number of views.

    However, when you (or others) load / post your files (such as images, sounds, etc) on another site (such as a forum) then those larger files can really increase the bandwidth usage.

    Just as an example, the default values are from a web page (10KB) with about 100 visitors a day (3000/month). The web page has two images (50KB and 12KB). And there was 1 image (137KB) that was posted in a forum message and viewed by 290 people a month.

    VIP: reminder - a file size of 1024000 is 1000KB (or 30000 is about 30K). In other words, many people enter the wrong value i.e. they enter a value about 1000 times too high. Use KB for file size input! ! !

    The last answer says its visitors per second.. That is incorrect, your most likely calculating how much bandwidth you will need for a months usage.

  • Liz
    Lv 7
    1 decade ago

    Realistically, you need to do some guessing, and some page construction.

    So. if you page is 350 k and it calls an swf file in at 1.2 megs, a 50 k jpeg, and 20 little 5 k gifs, you have a page that uses ... humina... carry the...

    1.7 megs of sauce each fill viewing.

    So now you have to guess your views, but that will be difficult. It's just math from there. 1000 views a day at 1.7 megs a view is 1.7 gigs of "bandwidth" give or take. It gets a littel funky with the 1024s and the digital vs decimal counting of megs and gigs and whatnots.

    If you run your site up a pole, and stick a nice hit counting redirect in to the stream you can do get a better idea, but once you have a site, there is every chance that you will have some bean counting software to work with.

  • Anonymous
    1 decade ago

    Average page size * expected number of hits per second = required bandwidth.

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