Thank you. +1. - Trevor
On 9/30/10 10:04 PM, Michael Dale wrote: > This is getting a little out of hand? People are going to spend more > time talking about the potential for minification errors or sub > optimisation cost criteria then we will ever actually be running into > real minification errors or any real readability issue. Reasonable > efforts are being made to make the non-minified versions easily > accessible. We can add additional comment to every outputted file that > says request me with ?debug=true to get the source code version, add a > user preference, add a cookie, and a view non-minfied source link to the > bottom every page... > > But try to keep in mind the whole point of minification is identical > program execution while minimising the file size! If we are to optimise > with random adjustments for "readability" we are optimising in two > opposite directions, and every enhacment in the direction of optimized > pacakge code delivery could potentially go against the 'readability' > optimisation. We are already commited to supporting two modes one that > optimized readability with raw source code delivery and one that is > optimised for small packaged delivery. No sense in setting readability > as criteria for the packaged mode since the 'readability' mode will > always do 'readability' better. > > --michael > > On 10/01/2010 12:38 AM, Trevor Parscal wrote: >> 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 > > _______________________________________________ > 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
