How much bandwidth does use?

Dec. 01, 2008 | by Adam Boulton

The homepage received on average 38 million unique hits per day over a 7 day period according to this compete story about the G1 release. This started me thinking, how much bandwidth does serving up Google’s homepage use in a year? Well some rudimentary maths left me with the following:

Homepage size = 15k (code + 8.5k logo image)

15k x 38 million page views x 365 days = 209,020,900,000k

209,020,900,000k = 24.3 terabytes of bandwidth

This is just to display the homepage of and does not include the 165 local domains or the 400 million or so searches Google receives every day.

Of course, the bandwidth figure above assumes (and they are big assumptions!) that there is no browser or ISP caching and that the number of visits remains constant. However, it does highlight how for Google displaying even a low sized webpage requires a huge amount of bandwidth. It’s no surprise then that The Google’s biggest expense comes from running and maintaining their servers and why they are looking at new technologies to reduce costs such as creating their own renewable energy (wind, solar & geothermal), super efficient server farms and even server farms based at sea

And if displaying Google’s simple homepage takes up so much bandwidth it’s not surprising that running YouTube has been estimated to cost nearly 1 million dollars a day and that the site uses as much bandwidth now as the whole internet did in 2000!

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    Comments (6)

    • Richard Baxter uses far more than 15k per hit at present (2013):

      Frontpage: 71k per hit.
      Search: 168k per hit.

      Even with autocomplete disabled (?complete=0).

      A complete waste of time and bandwidth in my opinion. How can they justify such a change? What happened to Google design ethics?Apr 21, 2013 11:02 am

    • Paul Doleman

      Darn it, just checked your maths Adam and we don't serve more data than

      As the numbers you quote equate to 193 Terabytes of bandwidth :-o

      Still an impressive number though.Dec 19, 2008 02:02 pm

    • Paul Doleman

      Very interesting.

      Though you might like to compare just our primary data centre in London for example, which serves out Merchantize, Network Sense reporting, Sharp, our web sites and one or two odds and sods.

      It is serving 26.7 Terrabytes - more than Google! We average over 780 Gigabits per day or 3.6 Gigabytes an hour continuously burting at peak times to alomsot 40 Gigabytes an hour.

      We do this from two cabinets containing about 25-30 virtual servers and 4-5 physical boxes drawing a mere 24 amps of power - impresed?

      Don't you just love Geeky stats ;-) Dec 19, 2008 01:54 pm

    • Dejan SEO

      With that many servers they'd be sucking up so mcuh power which comes from burning of coal... a few solar panels aren't gonna make much difference. Good on them for choosing efficient server farms though.Dec 2, 2008 01:29 pm

    • zigojacko (Geoff Jackson)

      Very interesting. Nice one, thanks :)Dec 2, 2008 12:33 pm

    • Antony Mayfield

      Nice post! Dec 1, 2008 09:20 pm

    Please note: the opinions expressed in this post represent the views of the individual, not necessarily those of iCrossing.

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