np Johan. I was confused earlier on by posts such as
http://blorn.com/post/10013293300/the-unofficial-google-app-engine-price-change-faq which focuses on multithreading to get pricing down, which I think is just wrong. There are lots of good reasons to write multithreaded code, but AppEngine pricing isn't really one of them. On 13 October 2011 18:22, Johan Euphrosine <pro...@google.com> wrote: > Hi Emlyn, > > Thanks for sharing those articles, it is very nice that you were able > to backup the billing formula with hard facts. > > As it was discussed in the groups during the pricing model change the > billing formula under the new model will be: > billable_instances_rate = min(active_instances_rate + > max_idle_instances, total_instances_rate) > > where in the dashboard: > - active_instances_rates is the yellow line > - total_instances_rate is the blue line > - max_idle_instances is the upper bound of "Idle Instances" performance > settings > > If you set max_idle_instances to automatic, it's equivalent to setting > it to a very large number making the formula essentially become: > billable_instances_rate = total_instances_rate > > See the following threads where Jon McAlister commented about the > billing formula: > https://groups.google.com/d/msg/google-appengine/zuRXAphGnPk/UiTgTIIesL0J > https://groups.google.com/d/msg/google-appengine/W-17IhgwrLI/05Wti7I39EUJ > https://groups.google.com/d/msg/google-appengine/T-dJtXmOO8U/npM69XZAJFcJ > > On Wed, Oct 12, 2011 at 3:10 PM, Emlyn <emlynore...@gmail.com> wrote: >> I've been testing this hypothesis: >> >> Hypothesis: Ignoring the 15 minute cost for spinning up new instances, >> the price we pay is the moment by moment minimum of (total instances) >> and (active instances + Max Idle Instances). If Max Idle Instances is >> set to Automatic, then we pay for the moment by moment total >> instances. >> >> It holds. That is, if you leave the default Max Idle Instances setting >> (Automatic), you'll be billed for every bit of instance time the >> scheduler chooses to run. If you set it to a fixed number, you'll have >> a fixed cost cap based on the actual work you are doing (a lot more >> like cpu time), in most cases a lot lower. >> >> Here are a couple of posts in detail, with graphs, billing numbers, pictures! >> >> The Spiny Norman Test >> http://appenginedevelopment.blogspot.com/2011/10/spiny-norman-test.html >> >> Go Spiny Norman, Go >> http://appenginedevelopment.blogspot.com/2011/10/go-spiny-norman-go.html >> >> -- >> Emlyn >> >> http://my.syyn.cc - Synchonise Google+, Facebook, WordPress and Google >> Buzz posts, >> comments and all. >> http://point7.wordpress.com - My blog >> Find me on Facebook and Buzz >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine" group. >> To post to this group, send email to google-appengine@googlegroups.com. >> To unsubscribe from this group, send email to >> google-appengine+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/google-appengine?hl=en. >> >> > > > > -- > Johan Euphrosine (proppy) > Developer Programs Engineer > Google Developer Relations > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appengine@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- Emlyn http://my.syyn.cc - Synchonise Google+, Facebook, WordPress and Google Buzz posts, comments and all. http://point7.wordpress.com - My blog Find me on Facebook and Buzz -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
