I was hardly making a case for how amazingly expensive it was. I was running some basic calculations that seemed to support your concept of "fairly cheap", but chose to mention that it's still "not free".
- Trevor On 9/30/10 9:30 PM, Tim Starling wrote: > On 01/10/10 04:35, Trevor Parscal wrote: >> OK, now I've calculated it... >> >> On a normal page view with the Vector skin and the Vector extension >> turned on there's a 2KB difference. On an edit page with the Vector skin >> and Vector and WikiEditor extensions there's a 4KB difference. >> >> While adding 2KB to a request for a person in a remote corner of the >> world on a 56k modem will only add about 0.3 seconds to the download, >> sending 2,048 extra bytes to 350 million people each month increases our >> bandwidth by about 668 gigabytes a month. > We don't pay by volume (GB per month), we pay by bandwidth (megabits > per second at the 95th percentile). They should be roughly > proportional to each other, but to calculate a cost we have to convert > that 668GB figure to a percentage of total volume. > > I took this graph: > > http://www.nedworks.org/~mark/reqstats/trafficstats-monthly.png > > And I used the GIMP histogram tool to integrate the outgoing part for > 30 days between week 34 and week 37. The result was 31,824 pixels of > blue and 20,301 pixels of green, which I figure is about 2113 > TB/month. So on your figure, the cost of adding line breaks would be > about 0.03% of whatever the bandwidth bill for that month is. I don't > have that number to hand, but I suspect 0.03% of it is not going to be > very much. For 2009-2010 there was a budget of about $1M for "internet > hosting", of which bandwidth is a part, and 0.03% of that entire > budget category is only $25 per month. > > I think your 668GB figure is too low, because current uniques is more > like 390M per month, and because some unique visitors will request the > JS more than once. You can double it if you think it would help you > make your case. > >> I don't know what that kind of >> bandwidth costs the foundation, but it's not free. > Developer time is not free either. > > -- Tim Starling > > > _______________________________________________ > Wikitech-l mailing list > Wikitech-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wikitech-l _______________________________________________ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
