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.
